JP2003100103A - Compact self-ballasted fluorescent lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact self-ballasted fluorescent lamp intended to be used for other models and to be miniaturized by standardizing. SOLUTION: This compact self-ballasted fluorescent lamp is formed by storing an arc tube 18 and an inverter circuit 24 to light the arc tube 18 in a cover to be mounted with a base. The compact self-ballasted fluorescent lamp is made to have incandescent lamps having power consumption of 40 W equivalent, 60 W equivalent and 100 W equivalent in common. Thereby, a lighting circuit 16 is formed as a first block base 23 and a second block base 28 by standardizing the sections using the components having the same constant to facilitate designing the circuit. The base can be disposed by miniaturizing it by standardizing them, and the components can be used for other models and can be miniaturized by mainly forming those sections which can not be standardized on a circuit board.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluorescent lamp having a discharge lamp and a discharge lamp lighting circuit for lighting the discharge lamp.

[0002]

2. Description of the Related Art Heretofore, as a light bulb type fluorescent lamp of this type, a structure described in Japanese Patent Laid-Open No. 2000-353403 has been known. The light bulb type fluorescent lamp described in Japanese Patent Laid-Open No. 2000-353403 is one in which an inverter circuit that supports the fluorescent lamp and that turns on the fluorescent lamp is housed in a cover and has a base attached, and is similar to a general incandescent light bulb. Can be used for.

Further, such a compact fluorescent lamp can be miniaturized, and the power consumption of the conventional incandescent bulb is 40 W.
Products are lined up such as equivalent, 60W and 100W.

Further, generally, even in the case of such a plurality of power consumptions, most of the inverter circuits are almost standardized, and there are not a few parts using the same constants even if the power consumptions are different.

[0005]

Therefore, the parts having the same constant are standardized to facilitate the circuit design, and
By standardizing, the board can be miniaturized and arranged, or
It is required that C can be realized and miniaturization can be achieved, conversion to other products and miniaturization of parts.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a light bulb type fluorescent lamp which is diversified to another type and miniaturized by standardizing parts.

[0007]

According to a first aspect of the present invention, there is provided a self-ballasted fluorescent lamp including: a fluorescent lamp; a pair of field effect transistors, which are complementary to each other, in a half-bridge type inverter circuit, and drive these field effect transistors. A discharge lamp lighting circuit for lighting a fluorescent lamp; and a block substrate on which a pair of field effect transistors and a gate circuit of the discharge lamp lighting circuit are mounted; a block substrate attached to the pair of field effect transistors; A circuit board on which the parts of the discharge lamp lighting circuit other than the gate circuit are mounted; a cover supporting the fluorescent lamp and containing the discharge lamp lighting circuit; and a base attached to the cover, A pair of field effect transistors and a gate circuit of the discharge lamp lighting circuit are mounted on the block board and By mounting the parts of the discharge lamp lighting circuit other than the field effect transistor and the gate circuit on the circuit board, only the parts that can be diverted from the discharge lamp lighting circuit are mounted on the block board. It becomes possible to standardize.

According to a second aspect of the present invention, in the light bulb type fluorescent lamp according to the first aspect, a pair of field effect transistors and a gate circuit of a discharge lamp lighting circuit are integrated into an IC.
This IC is mounted on at least one of a block substrate and a circuit board, and a pair of field-effect transistors and a gate circuit are integrated into an IC, so that the parts can be generalized and downsized.

A light bulb shaped fluorescent lamp according to a third aspect is the light bulb shaped fluorescent lamp according to the first or second aspect, further comprising a filter circuit and a rectifying circuit for rectifying an AC voltage and applying the rectified AC voltage to a discharge lamp lighting circuit. By mounting these filter circuit and rectifier circuit on the block board, by mounting the filter circuit and rectifier circuit on the block board,
The parts can be generalized.

A light bulb type fluorescent lamp according to a fourth aspect is the light bulb type fluorescent lamp according to any one of the first to third aspects, further comprising a filter circuit and a rectifying circuit for rectifying an AC voltage and applying it to a discharge lamp lighting circuit. The filter circuit and the rectifier circuit are integrated into an IC, and the IC is mounted on at least one of a block board and a circuit board. By integrating the filter circuit and the rectifier circuit into an IC, generalization and miniaturization of parts can be achieved. Can be achieved.

A light bulb type fluorescent lamp according to a fifth aspect is the light bulb type fluorescent lamp according to the third or fourth aspect, further comprising a smoothing capacitor for smoothing an output of the rectifying circuit, and the discharge lamp lighting circuit is a main inverter circuit. The main circuit of the smoothing capacitor and the inverter circuit, which has a capacitor that configures the circuit, and has the smoothing capacitor and the capacitor mounted on at least one of the block board and the circuit board. By mounting the capacitor to be mounted on either the block board or the circuit board, it is possible to generalize even those with different power consumption.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a compact fluorescent lamp and a lighting fixture of the present invention will be described below with reference to the drawings.

FIG. 2 is a side view showing a compact fluorescent lamp.
FIG. 3 is an exploded perspective view with a part removed, and as shown in FIGS. 2 and 3, 11 is a light bulb type fluorescent lamp. This light bulb type fluorescent lamp 11 includes a cover 14 having a base 12, and a cover 14 Lighting circuit 16 as a discharge lamp lighting device housed in
A globe 17 having a light transmitting property and an arc tube 18 as a discharge lamp housed in the globe 17 are provided. And
The envelope composed of the base 12, the cover 14 and the globe 17 is formed in an outer shape whose rated power approximates the standard size of a general lighting bulb such as an incandescent bulb of 60 W type or 100 W type. The general lighting bulb is JI
S C 7501.

The cover 14 has a cover body 19 made of a heat resistant synthetic resin such as polybutylene terephthalate (PBT). This cover body 19
Has a substantially cylindrical shape with an opening that expands downward, and a cap 12 of an Edison type E26 type or the like is covered on the upper end and is fixed by an adhesive or caulking.

The globe 17 is transparent or milky white having a light diffusing property, and is formed of glass or synthetic resin into a smooth curved surface having substantially the same shape as the glass bulb of a general lighting bulb such as an incandescent bulb. In addition, a fitting edge portion (not shown) that fits inside the lower end opening portion of the cover 14 is formed at the edge portion of the opening portion. The globe 17 may be combined with another member such as a diffusion film to improve the uniformity of brightness, or may be omitted.

The lighting circuit 16 is mounted on a circuit board 20 which is arranged horizontally, that is, perpendicularly to the longitudinal direction of the arc tube 18.

Now, the lighting circuit 16 will be described with reference to FIG. FIG. 1 is a circuit diagram for explaining the configuration of the lighting circuit.
As shown in FIG. 1, the lighting circuit 16 is a commercial AC power source e.
A capacitor C1 forming a filter circuit 21 is connected to the capacitor C1 via a fuse F1, and an input terminal of a full-wave rectifier 22 as a rectifying circuit is connected to the capacitor C1 via an inductor L1 forming a filter. The fuse F1, the filter circuit 21, and the full-wave rectifier 22 are mounted on the first block board 23 shown in FIG. 3, and the block board 23 is erected vertically to the circuit board 20. The smoothing capacitor C2 is connected to the output terminal of the full-wave rectifier 22 to form an input power supply circuit E. The smoothing capacitor C2 is attached to the circuit board 20.

The smoothing capacitor C2 of the input power supply circuit E is connected to a half-bridge type inverter circuit 24 as a discharge lamp lighting circuit for generating a high frequency. This inverter circuit 24 is provided in parallel with the smoothing capacitor C2 and is a switching element that is complementary to each other.
A field effect transistor Q1 as an S-type N-channel transistor and a field effect transistor Q2 as a MOS-type P-channel transistor are connected in series. The sources of the N-channel field effect transistor Q1 and the P-channel field effect transistor Q2 are connected to each other.

Further, between the drain and the source of the field effect transistor Q2, the primary winding L2 of the feedback transformer, the DC cut capacitor C3 and the ballast choke L3 which form the main circuit 25, and the arc tube 18 of the arc tube 18 are provided. One ends of the filament coils 18a and 18b at both ends are respectively connected, and a resonance capacitor C4 is connected between one end of one filament coil 18a and the other filament coil 18b, and the other end of the one filament coil 18a is connected. And a ballast choke L3 between the other end of the filament coil 18b
Also, a starting capacitor C5 having a resonance action is connected to the capacitor C4. The DC cutting capacitor C3, the ballast choke L3, and the starting capacitor C5 are mounted on the circuit board 20.

Further, between the smoothing capacitor C2 and the gate of the field effect transistor Q1 and the gate of the field effect transistor Q2, a starting resistor R2 forming a starting circuit 26 is formed.
A series circuit of a capacitor C6 and a capacitor C7 is connected between the gate of the field effect transistor Q1 and the gate of the field effect transistor Q2 and the source of the field effect transistor Q1 and the field effect transistor Q2. A gate circuit 27 as a control means for controlling the field effect transistor Q1 and the field effect transistor Q2 while feeding back is connected to the gates of Q1 and the field effect transistor Q2, and these capacitor C6 and the capacitor C7 of the gate circuit 27 are connected. Zener diode for gate protection of field effect transistor Q1 and field effect transistor Q2 in parallel with series circuit
A series circuit of ZD1 and Zener diode ZD2 is connected. A secondary winding L4 is magnetically coupled to the primary winding L2 of the feedback transformer, and the secondary winding L4 is connected to the connection point of the capacitors C6 and C7. Further, in parallel with the capacitor C6, the starting circuit 26
The resistor R3 is connected.

Further, a parallel circuit of a resistor R4 of the starting circuit 26 and a capacitor C8 for improving switching is connected between the drain and source of the field effect transistor Q2.

These field effect transistors Q1,
The field effect transistor Q2, the gate circuit 27, and the like are mounted on the second block substrate 28, and the second block substrate 28 is erected on the circuit substrate 20 in parallel with the first block substrate 23.

The inverter circuit 24 may be, for example, a full bridge type having two or more pairs of switching elements connected in series with each other. Further, the arc tube 18 may be of a type in which both filament coils 18a and 18b are preheated or may be of a type in which both filament coils 18a and 18b are not preheated.

The arc tube 18 has a glass bulb 31, a phosphor layer (not shown) coated with a phosphor is formed on the inner surface of the glass bulb 31, and a rare gas such as argon is provided inside the glass bulb 31. Filling gas serving as a discharge gas containing mercury, mercury, etc. is filled, and a pair of electrodes 32, 32 having filament coils 18a, 18b are sealed at both ends of the glass bulb 31.

The glass bulb 31 has a substantially same shape.
It has tubes 33a, 33b, 33c of a book, and these tubes 33a to 33c
Is made of glass and has a substantially cylindrical cross section, and is formed into a substantially U shape having a top portion that is smoothly curved at an intermediate portion. Further, thin tubes 34 are attached to the tube bodies 33a, 33b, 33c, respectively. Tubes 33a, 33b in the middle of the glass bulb 31
And both ends of the glass bulb 31 and one end of each of the tube bodies 33b and 33c at both ends of the glass bulb 31 are sequentially connected via a connecting pipe portion serving as a connecting portion to form one continuous discharge path. Further, in a state where the glass bulb 31 is incorporated in the light bulb type fluorescent lamp 11, the tops of the respective tube bodies 33a to 33c have the light bulb type fluorescent lamp 11 at the top.
Are arranged at equal intervals on a predetermined circumference centered on a central axis having the vertical direction as the longitudinal direction, and the tubes 33a to 33c are arranged corresponding to the sides of the triangular section.

Here, a method of manufacturing the arc tube 18 will be described with reference to FIGS.

In this case, as shown in FIG. 4, the electrode 32 has a single wire wells body 35 for improving strength by bending one single wire with a diameter of 0.6 mm and an interval of 4 mm in a U-shape.
Is formed to make the wells 36, 36 parallel to each other, and the single wire wells body 35 is flattened with the U-shaped surface as a surface so as to have a thickness of 0.3 mm in order to improve the resistance to open leg. Then, 3 mm at the tip of each wells 36, 36 is processed into a V shape, and the coiled filament coils 18a, 18b are clamped and attached to the open portion between the V-shaped wells 36, 36, Apply oxide. And
An auxiliary amalgam foil 37 for improving luminous flux is welded and attached to one of the wells 36, if necessary.

When manufacturing the arc tube 18, as shown in FIG. 5, three substantially U-shaped tube bodies 33a, 33b, 33c coated with a phosphor are used.

Then, as shown in FIG. 6, the pipes 33a, 33b are formed.
An electrode 32 shown in FIG. 4 is attached to one end of the above, and a thin tube 34 is attached to the other end by a pinch seal.

After that, as shown in FIG. 7, the U-shaped connection portion of the single-line wells body 35 of the electrode 32 is cut to separate the wells 36,
Separate 36.

Further, as shown in FIG. 8, a main amalgam 38 is attached to one end of the tube 33b and a thin tube 34 is attached to the other end thereof by pinch seals, and the tubes 33a, 33b and 33c are parallel to each other and sealed. A discharge path is formed by connecting them near the stop. Then, enclose the amalgam in the thin tube 3 of the tubular body 33b.
The thin tube 34 is sealed by evacuating from 4.

If the single wire wells body 35 bent in a U-shape as described above is used, for example, the outer diameter of the pipe is 10 mm.
It is not necessary to use 3 parts wells using inner, dumet and outer or wells using bead glass even for a small degree, and a jig or wells with a complicated mechanical head for holding two wells is used inside. Since it is not necessary to bend the well, the wells 36, 36 can be easily and securely attached at low cost. Furthermore, the insulation distance between the wells 36 and 36 can be reliably maintained, and
Since there is no bead glass, it is possible to prevent the bead glass from coming into contact with the tubes 33a, 33b, 33c. Further, since there is no bead glass, even if an evaporated substance such as tungsten that adheres to the filament coils 18a and 18b is sputtered, it does not adhere to the bead glass because there is no bead glass, and the filament coils 18a and 18b at the end of their lifespan. There is also no disconnection and a short circuit between the wells 36 and 36. Further, the defect that the bead glass drops due to the heat cycle during manufacture or use is also eliminated.

Further, the arc tube 18 is attached to a partition plate as a supporting means (not shown) which is a fluorescent lamp fixing member and a lighting circuit fixing member, and the partition plate is fixed to the cover 14. That is, the partition plate has a disk-shaped substrate portion, and the end portions of the tubes 33a to 33c are inserted into this substrate portion and then bonded with a silicone adhesive to fix the arc tube 18 to the partition plate. Has been done.

Further, as shown in FIG. 9, an insertion hole 41 is formed in the circuit board 20, a land 42 of metal such as copper is formed around the insertion hole 41, and the wells 36 of the arc tube 18 are formed. After being inserted into the insertion hole 41, it is soldered or welded to the land 42, and the arc tube 18 is electrically and mechanically attached to the circuit board 20.

As described above, by inserting the wells 36 of the arc tube 18 into the insertion hole 41 and attaching the wells 36 to the land 42 by welding or the like, lapping becomes unnecessary, and the conventional wells 36 are used.
Since the wrapping pins are lapped, it is necessary to provide a wrapping jig clearance on the outer periphery of the wells 36, and no component can be attached. However, the clearance is not required and the efficiency of component placement is improved.

Note that the connector may be attached by crimping or crimping instead of soldering or welding.

Next, the operation of the lighting circuit 16 will be described.

When the lighting circuit 16 is powered on, the voltage of the commercial AC power source e is full-wave rectified by the full-wave rectifier 22 and smoothed by the smoothing capacitor C2.

First, a voltage is applied to the gate of the N-channel field effect transistor Q1 via the resistor R2, and the field effect transistor Q1 is turned on. By turning on the field effect transistor Q1, the primary winding L2 of the feedback transformer, the capacitor C3,
Ballast choke L3, capacitor C4 and capacitor C5
A voltage is applied to the closed circuit of, and the ballast choke L3, the capacitor C4, and the capacitor C5 resonate. Then, a voltage is induced in the secondary winding L4 of the primary winding L2 of the feedback transformer, the capacitors C6 and C7 of the gate control circuit 76 and the like resonate naturally to turn on the field effect transistor Q1,
A voltage is generated to turn off the field effect transistor Q2.

Then, when the resonance voltage of the primary winding L2 of the feedback transformer, the capacitor C3, the ballast choke L3, the capacitor C4 and the capacitor C5 is inverted, a voltage opposite to the previous voltage is generated in the secondary winding L4, and the gate control circuit 76 turns off the field effect transistor Q1 and generates a voltage to turn on the field effect transistor Q2. In addition, the primary winding L2 of the feedback transformer, capacitor C3, ballast choke L3, capacitor
When the resonance voltage of C4 and the capacitor C5 is inverted, the field effect transistor Q1 turns on and the field effect transistor Q2 turns off. Thereafter, similarly, the field effect transistor Q1 and the field effect transistor Q2 are alternately turned on and off to generate a resonance voltage, and the arc tube 18 connected in parallel with the capacitor C4 and the capacitor C5 is a filament coil.
18a and 18b are preheated and a starting voltage is applied to start
Light.

Further, the Zener diode ZD1 and the Zener diode ZD2 keep the gate voltage of the field effect transistor Q1 and the field effect transistor Q2 constant and protect the gate from an excessive voltage.

Therefore, since the N-channel and P-channel field effect transistors Q1 and Q2 are used and the N-channel field effect transistor Q1 is connected to the high potential side, one gate circuit 27 is used for the N-channel and P-channel. The field effect transistors Q1 and Q2 can be controlled.

According to the above-described embodiment, the power consumption of the incandescent light bulb is 40 W, 60 W, 100 W, and the like, and the parts having the same constants are standardized to standardize the first block board 23 and the second block board. The circuit board is formed as the block board 28 to facilitate the circuit design, and the board can be miniaturized and arranged by standardization. By mainly forming the non-standardized portion on the circuit board 20, it is diverted to other types and parts are The size can be reduced.

The first block substrate 23 and the second block substrate 28 may not be substrates, but may be integrally formed by molding each or any one of them by molding with a heat resistant resin or a glass material. , The first block substrate 23 or the second block substrate 28
The above configuration may be formed on the circuit board 20.

If this IC is formed as a chip-shaped thin component, further miniaturization becomes possible.

Next, another embodiment will be described with reference to FIG.

FIG. 10 is a sectional view showing a part of a bulb-type fluorescent lamp according to another embodiment. This circuit board 20 includes a lower substrate 46 located below and an upper substrate located above the lower substrate 46. 47 and 37 are electrically and mechanically connected to each other by connecting pins 48 by welding or soldering, and are stacked and formed to be three-dimensional. Also, these lower substrates 46
The upper substrate 47 and the upper substrate 47 may be either single-sided substrates or double-sided substrates.

Then, on the upper surface of the lower substrate 46, there are arranged parts relatively resistant to heat, that is, parts having relatively high heat resistance,
The upper substrate 47 has a chip shape such as an IC and is relatively weak against heat.
That is, parts having relatively low heat resistance are arranged. As described above, the upper substrate 47 is partially shielded from the heat generation of the light emitting tube 18 by the lower substrate 46 and is separated from the heat generation of the light emitting tube 18, so that the temperature is lowered even if the component has relatively low heat resistance. It is possible to prevent the adverse effect of heat. In particular, if the components are arranged so as to be floated from the upper substrate 47 by using lead forming or a connector, it is possible to further reduce the influence of the heat of the arc tube 18 which is the heat source.

As a component to be mounted on the upper substrate 47, an electrolytic capacitor is often used and a relatively tall smoothing capacitor C2 is located in the base 12. Further, in recent years, electrolytic capacitors have also become relatively high in heat resistance. Therefore, the resonance capacitor C4, which uses a film capacitor, and the field effect transistors Q1 and Q2, which are ICs or switching elements, should be located in the base 12. You can Further, the base 12 is not limited to one component, and a plurality of components may be housed.

The lower substrate 46 and the upper substrate 47 are
You may connect with a connector.

Further, another embodiment will be described with reference to FIG.

FIG. 11 is an exploded perspective view showing the vicinity of a circuit board of a light bulb type fluorescent lamp of another embodiment. In the embodiment shown in FIG. 9, a recess 51 is formed around the circuit board 20 by a notch. The land 52 is formed around the surface of the recess 51.

Further, another embodiment will be described with reference to FIG.

FIG. 12 is an exploded perspective view showing the vicinity of the circuit board of the bulb-type fluorescent lamp of another embodiment. In the embodiment shown in FIG. 11, the circuit board 20 is provided with four wells 36 of the arc tube 18. Corresponding four recesses 51 and lands 52 are provided. On the other hand, a space holding member 53 that holds a space is attached between the four wells 36 to keep the space between the four wells constant. In this way, the space between the wells 36 is held by the space holding member 53, and the wells 36 are mounted in the recesses 51, whereby the arc tube 18 can be easily mounted on the circuit board 20.

Still another embodiment will be described with reference to FIG.

FIG. 13 is a sectional view showing a part of a bulb-type fluorescent lamp of another embodiment. In the embodiment shown in FIGS. 2 and 3, lead wires 55 are provided on the top and side portions of the base 12, respectively. , One end of 56, these lead wires 55,
The other end of 56 is connected to the receiving pin 57 which is attached to the circuit board 20 and has a concave receiving portion.

As described above, the receiving pin 57 is provided on the circuit board 20 side, and the lead wires 55 and 56 from the top portion and the side portion of the base 12 are connected to the receiving pin 57, respectively. Since it is not necessary to provide a lead wire in advance, it is not necessary to process the lead wire during the inspection process and shipping, and the inspection and shipping are facilitated.

Still another embodiment will be described with reference to FIGS. 14 to 17.

FIG. 14 is a perspective view showing a disk-shaped terminal of another embodiment, FIG. 15 is a perspective view showing a state in which the wells are mounted on the disk-shaped terminal, and FIG. 16 shows the vicinity of the terminal mounting portion. FIG. 17 is an exploded perspective view, and FIG. 17 is an exploded sectional view showing the vicinity of the cover.

As shown in FIG. 14, the disk-shaped terminal 61 is formed by punching out a copper plate having a thickness of 0.3 mm, and the tip end side of the conical surface-shaped inclined surface 62 having a concave recess upward. A locking hole 63 is formed in a recessed state, and a notch 64 is formed continuously from the locking hole 63 on the inclined surface 62 along the radial direction so as to have springiness. Also, the inclined surface 62
An annular flange portion 65 is formed continuously from the inclined surface 62 on the bottom edge of the. The inner diameter of the locking hole 63 is smaller than the outer diameter of the wells 36.

Then, as shown in FIG. 15, the wells 36 are inserted into the locking holes 63. The inserted wells 36 are mechanically tightened and connected to the disc-shaped terminal 61 by the spring effect of the cut 64, and the wells 36 are moved from the base end side of the inclined surface 62 to the tip end side by the cut 64. However, it is not possible to move from the distal end side to the proximal end side. In addition,
The disk-shaped terminal 61 is pressed from the side of the locking hole 63 toward the flange portion 65 side in the direction of crushing the recess, thereby locking the disk-shaped terminal 61.
Tighten 63 to Wells 36 more securely.

Further, as shown in FIG. 16, a disc-shaped terminal 61
A strip-shaped lead portion 66 continuous with the collar portion 65 is integrally formed on the collar portion 65. On the other hand, a terminal mounting portion 71 is formed inside the cover 14, and the terminal mounting portion 71 is a pair of terminal mounting portions.
72, 72, and the terminal mounting portions 72, 72 are holding recesses 73 for holding the flange portions 65 of the disc-shaped terminals 61 on the opposite sides, respectively.
The side where the opening where is formed is opposed is formed in a U-shaped cross section.

Further, as shown in FIG. 17, the circuit board 20
Is provided with a pair of thick and short pin-shaped power supply lead pins 74, 74 for electrically connecting the lighting circuit 16 formed on the circuit board 20. The outer diameter of these power supply lead pins 74 is about 1 mm, which is larger than the locking hole 63 of the disk-shaped terminal 61. As described above, by forming the power supply lead pin 74 into a thick and short pin shape, the power supply lead pin 74 is not deformed such as bent during transportation, packing, and connection work, and therefore the connection work and the like can be made easier and more reliable.

Then, as shown in FIG. 17, after inserting the two to four wells 36 into the circuit board 20 through the insertion holes 41, the wells 36 are inserted into the locking holes 63 of the disk-shaped terminals 61 to form a circle. The plate-like terminal 61 is fixed to the land 42 together with the wells 36 by welding or soldering. In this way, the disc-shaped terminal 61 is
By mounting on the well 36, the wells 36 are prevented from coming off from the insertion hole 41 of the circuit board 20 during the work, and the workability is improved.

Thereafter, the flange portion 65 of the disk-shaped terminal 61 having the lead portion 66 is inserted into the holding recess 73 of the terminal mounting portion 71 of the cover 14 with the lead portion 66 positioned on the cover 14 side. Then, the lead portion 66 of one disc-shaped terminal 61 is arranged along the inner surface of the cover 14 and is electrically connected by being sandwiched or welded to the top portion of the base 12, and the disc-shaped terminal 61 of the other disc-shaped terminal 61. Similarly, the lead portion 66 is arranged along the inner surface of the cover 14 and is electrically connected to the side portion of the base 12 by being sandwiched or welded. Further, the power supply lead pins 74 of the circuit board 20 are inserted into the locking holes 63 of the disk-shaped terminals 61, the lighting circuit 16 of the circuit board is electrically connected to the base 12, and the lighting circuit 16 is electrically connected. Connecting. In this state, the disc-shaped terminal 61 is fixed by the power lead pin 74 and the terminal mounting portion 71,
The 20 can be fixed to the cover body 14.

By using the disc-shaped terminal 61,
The disassembling work is easy and can be recycled.

A disk-shaped terminal 61 of another embodiment will be described with reference to FIG.

FIG. 18 is a perspective view showing a disk-shaped terminal of another embodiment. The disk-shaped terminal 61 shown in FIG.
In the disc-shaped terminal 61 shown in (1), the notch 64 formed in the inclined surface 62 is notched to the flange portion 65, and is formed as a whole.

In this way, the notch 64 is inserted from the locking hole 63 into the flange 65.
Even if it is entirely formed, the same operation and effect as in FIG. 14 can be obtained.

[0070]

According to the self-ballasted fluorescent lamp of the first aspect, the pair of field effect transistors and the gate circuit of the discharge lamp lighting circuit are mounted on the block substrate, and the field effect transistors other than the pair of field effect transistors and the gate circuit are exposed. By mounting the parts of the electric lighting circuit on the circuit board, only the parts that can be diverted to the discharge lamp lighting circuit are mounted on the block board, and the parts can be diverted and shared and standardization can be achieved. it can.

According to the self-ballasted fluorescent lamp of the second aspect, in addition to the self-ballasted fluorescent lamp of the first aspect, a pair of field-effect transistors and a gate circuit are integrated into an IC, so that the parts are generalized and miniaturized. Can be achieved.

According to the compact fluorescent lamp of the third aspect, in addition to the compact fluorescent lamp of the first or second aspect,
By mounting the filter circuit and the rectifying circuit on the block substrate, it is possible to make the parts versatile.

According to the light bulb type fluorescent lamp of the fourth aspect, in addition to the light bulb type fluorescent lamp according to any one of the first to third aspects, a filter circuit and a rectifying circuit are integrated into an IC, so that general-purpose parts and small size can be achieved. Can be realized.

According to the compact fluorescent lamp of the fifth aspect, in addition to the compact fluorescent lamp of the third or fourth aspect,
By mounting a smoothing capacitor, which has different constants depending on power consumption and is difficult to generalize, and a capacitor forming a main circuit of an inverter circuit on either the block board or the circuit board, it is possible to generalize even those with different power consumption.

[Brief description of drawings]

FIG. 1 is a circuit diagram showing a lighting circuit according to an embodiment of the present invention.

FIG. 2 is a side view showing the same bulb-type fluorescent lamp as above.

FIG. 3 is an exploded perspective view showing the same bulb-type fluorescent lamp with a part thereof removed.

FIG. 4 is a side view showing the single-line wells body in the process of manufacturing the above self-ballasted fluorescent lamp.

FIG. 5 is an explanatory view showing one manufacturing process of the above arc tube.

FIG. 6 is an explanatory view showing the next manufacturing process of the above arc tube of FIG. 5;

FIG. 7 is an explanatory view showing the next manufacturing step of the above arc tube of FIG. 6;

FIG. 8 is an explanatory view showing the next manufacturing process of the above arc tube of FIG. 7;

FIG. 9 is an exploded perspective view showing a state in which the above wells are connected to a circuit board.

FIG. 10 is a cross-sectional view showing a part of a bulb-type fluorescent lamp of another embodiment of the same as above.

FIG. 11 is an exploded perspective view showing the vicinity of the circuit board of the bulb-type fluorescent lamp of another embodiment of the same as above.

FIG. 12 is an exploded perspective view showing the vicinity of a circuit board of a light bulb type fluorescent lamp according to another embodiment of the present invention.

FIG. 13 is a sectional view showing a part of a bulb-type fluorescent lamp of another embodiment of the same as above.

FIG. 14 is a perspective view showing a disk-shaped terminal of another embodiment of the same as above.

FIG. 15 is a perspective view showing a state in which the wells are attached to the disk-shaped terminal of the above.

FIG. 16 is an exploded perspective view showing the vicinity of the same terminal mounting portion.

FIG. 17 is an exploded cross-sectional view showing the vicinity of the same cover.

FIG. 18 is a perspective view showing a disk-shaped terminal of another embodiment of the same as above.

[Explanation of symbols]

11 Light bulb type fluorescent lamp 12 mouthpiece 14 cover 18 Arc tube as a fluorescent lamp 20 circuit board 21 Filter circuit 22 Full-wave rectifier as a rectifier circuit 23 First block board 24 Inverter circuit as discharge lamp lighting circuit 25 Main circuit 27 gate circuit 28 Second block board C2 smoothing capacitor Q1, Q2 field effect transistor

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shinya Shirata             4-3-1, Higashishinagawa, Shinagawa-ku, Tokyo Toshiba             Inside Litec Co., Ltd. (72) Inventor Tsutomu Araki             4-3-1, Higashishinagawa, Shinagawa-ku, Tokyo Toshiba             Inside Litec Co., Ltd. (72) Inventor Toshiyuki Ikeda             4-3-1, Higashishinagawa, Shinagawa-ku, Tokyo Toshiba             Inside Litec Co., Ltd. F term (reference) 3K072 AA02 AA05 AA06 AC02 AC11                       BB01 BC01 CA16 DC07 FA02                       FA05 GA02 GB12 GC02 HA05

Claims (5)

[Claims] 1. A fluorescent lamp; a discharge lamp lighting circuit for lighting a fluorescent lamp, comprising a pair of field-effect transistors complementary to each other in an inverter circuit of a half-bridge type, and a gate circuit for driving these field-effect transistors. A block board on which a pair of field effect transistors and gate circuits of a discharge lamp lighting circuit are mounted; and a circuit on which the block board is mounted and parts of the discharge lamp lighting circuit other than the pair of field effect transistors and gate circuits are mounted A light bulb-shaped fluorescent lamp comprising: a substrate; a cover that supports the fluorescent lamp and accommodates a discharge lamp lighting circuit; and a base attached to the cover. 2. The bulb-shaped fluorescent light according to claim 1, wherein a pair of field effect transistors and a gate circuit of the discharge lamp lighting circuit are integrated into an IC, and the IC is mounted on at least one of a block substrate and a circuit substrate. lamp. 3. A filter circuit and a rectifier circuit for rectifying an AC voltage and applying the rectified AC voltage to a discharge lamp lighting circuit, the filter circuit and the rectifier circuit being mounted on a block substrate. The described bulb-shaped fluorescent lamp. 4. A filter circuit, and a rectifier circuit for rectifying an AC voltage and applying the rectified AC voltage to a discharge lamp lighting circuit. The filter circuit and the rectifier circuit are integrated into an IC.
4. The bulb-type fluorescent lamp according to claim 1, wherein C is mounted on at least one of the block substrate and the circuit substrate. 5. A smoothing capacitor for smoothing the output of the rectifier circuit is provided, and the discharge lamp lighting circuit has a capacitor that constitutes a main circuit of the inverter circuit. The bulb-type fluorescent lamp according to claim 3 or 4, wherein the fluorescent lamp is attached to either one.