JP2003168302A - Compact self ballasted fluorescent lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact self ballasted fluorescent lamp wherein a wire is easily connected to its base part, and the base part can be prevented from being detached. <P>SOLUTION: This compact self ballasted fluorescent lamp 1 is equipped with a cover 4 having a hollow protruding part 12 integrally formed by an insulating material at its one end side 4a while forming a first screw part 13 capable of being threaded in a bulb socket 27 on the protruding part 12, a nonconductive cylindrical body 5 connected to the protruding part 12 of the cover 4, on which a second screw part 22 capable of being threaded in the bulb socket 27 together with the first screw part 13 of the protruding part 12, a first feeding element 20 disposed at the top part 5a of the cylindrical body 5, and a second feeding element 21 disposed between the cylindrical body 5 and the protruding part 12. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-ballasted fluorescent lamp having a base portion screwed into a light bulb socket.

[0002]

2. Description of the Related Art In a bulb-type fluorescent lamp, a cap having a metallic shell screwed into a bulb socket is capped on one end side of a cover. For example, FIG. 6 shows the configuration of a bulb-type fluorescent lamp disclosed in Japanese Patent Laid-Open No. 2000-48633 (Prior Art 1).

In a light bulb type fluorescent lamp 50 shown in FIG. 6, a cap mounting portion 52 is formed so as to project from one end side of a cover 51, and a wire insertion portion 53 and a cap fitting portion 54 are formed in the cap mounting portion 52.
Is formed. The base 55 includes a metallic shell portion 56 and an insulating glass portion 57, and an eyelet 58 is provided on the top of the insulating glass portion 57.

A substrate 59 is provided inside the cover 51.
The lighting circuit 60 formed by the electric components mounted in the housing is housed, and the electric wires W1 and W2 and the lamp lines L1 and L2 are drawn from the lighting circuit 60. Lamp line L
1 and L2 are connected to electrodes of a fluorescent lamp (not shown) attached to the other end of the cover 51. The one electric wire W1 is electrically and mechanically connected to an eyelet 58 provided on the top of the insulating glass portion 57 of the base 56. Then, the other electric wire W2 is led out to the outside of the base attachment portion 52 through the electric wire insertion portion 53, folded back and arranged on the base fitting portion 54, and in this state, the base 55 is covered with the base mounting portion 52, It is electrically connected to the shell portion 56 of the base 55 by punching and caulking at a plurality of positions from the outer peripheral side of the base fitting portion 54. Further, by this, the base 55 is fixed to the cover 51.

A bulb-type fluorescent lamp in which a cap that is screwed into a bulb socket is integrally formed on one end side of a cover,
For example, it is disclosed in Japanese Patent Application Laid-Open No. 6-203744 (Prior Art 2), and its configuration is shown in FIG.

A light bulb type fluorescent lamp 61 shown in FIG. 7 has a cover 62, a screw portion 64 corresponding to a shell portion of a base 63, and a tip portion 65 integrally formed of a synthetic resin. A contact point 66 is provided on the top of the tip 65, and near the boundary between the tip 65 and the screw 64,
A contact 67 made of a band of a conductive material surrounding the tip portion 65 is provided to form the base 63. And the contact 66
The contact 67 is connected to a lighting device (not shown) arranged in the cover 62.

[0007]

In the prior art 1, the mouthpiece mounting portion 5 is punched at a plurality of positions from the outer peripheral side of the mouthpiece fitting portion 54.
Since the base 55 is fixed to 2, the bulb-type fluorescent lamp 5
When the 0 is attached to the socket for the light bulb, the fixing strength with respect to the torque generated between the base 55 and the base fitting portion 54 is low, and when the fixing strength is not sufficient due to a trouble in the punching work, the base 55 is the base. There is a risk that it will come off from the mounting portion 52.

The prior art 2 attempts to reduce the amount of metal in the base 63, but a hole for inserting an electric wire pulled out from the lighting device is bored in the screw portion 64 or the tip end portion 65 of the base 63, and the electric wire is inserted in this hole. Since the electric wire is inserted through to connect the electric wire to the contact 67, there is a drawback that the assembling work of the bulb-type fluorescent lamp 61 is troublesome.

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 in which the work of connecting an electric wire to the base portion is easy and the removal of the base portion can be prevented. .

[0010]

According to the invention of a fluorescent lamp described in claim 1, there is provided a fluorescent lamp having a non-linear bulb in which a pair of electrodes are sealed in the same direction; and a lighting device for lighting the fluorescent lamp. It has a hollow projecting portion on one end side where a first screw portion that can be screwed into a bulb socket is formed, a fluorescent lamp is attached to the other end side, and a lighting device is housed inside A cover integrally formed of an insulating material; a non-conductive member that is connected to the protrusion of the cover and has a second screw portion that can be screwed into the light bulb socket together with the first screw portion of the protrusion A cylindrical body; a first power supply arranged on the top of the cylinder; and a second power supply arranged between the cylinder and the protrusion. .

In the present invention and each of the following inventions, each constitution is as follows unless otherwise mentioned.

The "non-linear valve" means a valve formed so that the discharge path is bent. In addition to the U-shaped, saddle-shaped, etc., tubular valves are connected at their ends. A valve formed by a so-called bridge type or a mold type, which is continuously connected, is also included.

The first screw portion of the projecting portion and the second screw portion of the cylindrical body are configured to be screwed into the light bulb socket when they are combined. That is, it is preferable that the first screw portion and the second screw portion are respectively formed on the protrusion and the cylinder so as to be continuous with each other in a state where the cylinder is connected to the protrusion of the cover.
However, the screw part may have a space of one round or more between the first and second screw parts as long as it can be screwed into the bulb socket.

The first and second power supply terminals are respectively connected to electric wires drawn from the lighting device. Then, the connection between the one electric wire and the first power supply terminal may be performed before connecting the cylindrical body to the projecting portion of the cover, and the electric wire may be connected to the top portion of the cylindrical body or the hole formed in the first power supply terminal. After inserting and connecting the cylindrical body to the protruding portion of the cover, welding may be performed.

The bulb-shaped fluorescent lamp may be one in which a globe containing the fluorescent lamp is attached to the other end of the cover.

According to the present invention, the first screw portion of the protruding portion and the second screw portion of the non-conductive cylindrical body which are integrally formed on the cover with the insulating material are screwed together with the bulb socket. Then, the bulb-type fluorescent lamp is attached to the bulb socket. Then, power is supplied from the light bulb socket to the lighting device via the first and second power supplies. Then, the first and second power supply terminals are respectively arranged at the top of the cylindrical body and between the cylindrical body and the projecting portion, so that the electric wire drawn from the lighting device can be easily connected. Also, the first
Since the second screw portion is formed on the protrusion of the cover and the cylindrical body, respectively, and the cylindrical body is connected to the protrusion, the protrusion of the cover is attached when the bulb-type fluorescent lamp is attached to the bulb socket. It is possible to prevent the cylindrical body from being removed.

According to a second aspect of the present invention, there is provided the fluorescent lamp according to the first aspect, in which the cylindrical body and the projecting portion of the cover are fitted and connected to each other to sandwich the second power supply. It is characterized by

According to the present invention, since the second power supply terminal is sandwiched between the cylindrical body and the projecting portion of the cover, there is no need to fix the second power supply terminal by a special means, and the second electric power supply terminal of the bulb-type fluorescent lamp can be secured. Assembly work is improved.

The invention of the light bulb type fluorescent lamp according to claim 3 is the light bulb type fluorescent lamp according to claim 1 or 2, wherein the second power supply is deformable along the first screw portion of the protruding portion. It is characterized by being made of a plate-shaped metal ring.

According to the present invention, when the first screw portion of the protruding portion and the second screw portion of the cylindrical body are screwed into the light bulb socket, the metal ring is moved along the first screw portion. Because of the deformation, the metal ring and the light bulb socket are easily brought into contact with each other.

[0021]

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

First, a first embodiment of the present invention will be described.

1 to 4 show a first embodiment of the present invention, FIG. 1 is a front view of a compact fluorescent lamp, FIG. 2 is a schematic sectional view of a cover and a cylinder, and FIG. 3 is a cover and a cylinder. FIG. 4 is an explanatory view showing a connecting step of the body, and FIG. 4 is an attachment state view showing attachment of the bulb-type fluorescent lamp to the bulb socket.

In FIG. 1, a light bulb type fluorescent lamp 1 has a fluorescent lamp 2, a lighting device 3, a cover 4, a cylindrical body 5 and the like.

The fluorescent lamp 2 is formed to have a non-linear bulb 7 in which bent bulbs 6, 6, 6 made of three barium silicate glasses each having a U-shaped top are connected at their ends. It was done, and 3 bending valves 6,
The end portions 6 and 6 are fixed to and supported by the holder 8 with a thermosetting adhesive or the like. The non-linear valve 7 has a pair of electrodes (filament electrodes) (not shown) sealed at both ends in the same direction.

The lighting device 3 is housed in the cover 4 and comprises a well-known lighting circuit such as a transistor Tr1, a film capacitor C1 and an electrolytic capacitor C2 mounted on the circuit board 9. The output lines 10a and 10b of the lighting device 3 are connected to electrodes (not shown) of the fluorescent lamp 2, respectively. The lighting device 3 supplies high-frequency power between the electrodes of the fluorescent lamp 2 to light the fluorescent lamp 2.

The cover 4 is made of polybutylene terephthalate (PBT) resin which is an insulating material having heat resistance, and a hollow protrusion 12 is integrally formed on one end side 4a of the cover body 11 formed in a substantially bowl shape. A first screw portion (first shell portion) 13 that can be screwed into the bulb socket is formed on the protruding portion 12. Since the protruding portion 12 is hollow, tall electronic components of the lighting device 3, for example, the electrolytic capacitor C2 and the power supply lines 14a, 1 drawn from the lighting device 3 are provided.
4b is inserted.

As shown in FIG. 2, the projecting portion 12 has a cylindrical small tubular portion 15 at the tip side which is slightly smaller than the inner diameter of the cover 5 and has a predetermined projecting length which can be accommodated in the cover 5. It is provided. And this small tube portion 15
Has a plurality of convex portions 16 formed at predetermined intervals along the circumferential direction, and further from the tip end to the small cylinder portion 15 and the protruding portion main body 12.
A slit 18 having a predetermined width that reaches the boundary surface 17 with A is formed.

The cover 4 is, as shown in FIG.
The fluorescent lamp 2 is attached to the other end 4b of the cover body 11. That is, the holder 8 supporting the fluorescent lamp 2
Is provided with a not-shown locking piece, and the other end side 4b of the cover body 11 is provided with a not-shown locked portion for locking the locking piece. The locking piece is locked to the locked portion, and the holding body 8 is supported on the other end side 4b of the cover body 11.

The cover 4 houses the lighting device 3 inside. That is, in the cover 4, a support plate (not shown) that supports the circuit board 9 of the lighting device 3 is integrally provided on the inner wall of the cover 4, and the circuit board 9 is supported by a thermosetting resin or screws. It is fixed to the board.

The cylindrical body 5 is formed of PBT resin, which is an insulating material, and has a bottom, and the base portion 19 is formed together with the first and second power supply terminals 20 and 21 made of a conductive material (metal). Constitute.

The cylindrical body 5 is the protruding portion 1 of the cover 4.
A second screw portion 22 (second shell portion) that is connected to the second small tubular portion 15 and that can be screwed into the bulb socket together with the first screw portion 13 of the protruding portion 12 is formed. Then, as shown in FIG. 2, a space that is slightly larger than the outer diameter and the protruding length of the small tubular portion 15 is formed, and a plurality of concave portions 23 in which the convex portion 16 of the small tubular portion 15 is engaged with the inner wall of this space. Are formed. This concave portion 23 is a position of the inner wall that allows the first screw portion 13 of the protrusion 12 and the second screw portion 22 of the cylindrical body 5 to be screwed together with the bulb socket when the protrusion 16 is engaged. It is provided in. Convex portion 16 in concave portion 23
Is engaged, the cylindrical body 5 and the protrusion 12 of the cover 4 are fitted and connected. Further, on the top portion 5a of the cylindrical body 5,
A hole 24 is provided, and the hole 24 initially connects the inside and the outside of the cylindrical body 5.

A thin plate-shaped first power supply terminal 20 made of conductive phosphor bronze is bonded and disposed on the top portion 5a of the cylindrical body 5. The first power supply terminal 20 is initially provided with a hole 25 that faces the hole 24. Hole 24
And the hole 25 is the power supply line 1 drawn from the lighting device 3.
It is provided for inserting 4a.

Further, as shown in FIG. 1, between the cylindrical body 5 and the projecting portion main body 12A of the projecting portion 12, there is provided a second power supply 21 which is a metallic ring made of phosphor bronze. .
The second power supply 21 can be placed on the boundary surface 17,
The inner diameter is formed to be slightly larger than the outer diameter of the small tube portion 15 of the protruding portion 12, and the outer diameter is slightly larger than the outer diameter of the protruding portion main body 12A. And protrudes to the outside of the protruding portion 12. And
The second power supply terminal 21 is sandwiched between the cylindrical body 5 and the protruding portion main body 12A of the protruding portion 12 at the boundary surface 17 when the cylindrical body 5 and the protruding portion 12 are fitted and connected to each other. The second power supply 21 is a thin plate-like member that can be deformed along the first screw portion 13 of the protruding portion 12 when the light bulb-shaped fluorescent lamp 1 is mounted in the light bulb socket, for example, a thickness of 0.1 m.
It is formed on a metal ring of m.

Next, the operation of the first embodiment of the present invention will be described.

FIG. 3 shows a connecting process (assembling process) of the cover 4 and the cylindrical body 5, in which the lighting device 3 is shown.
Is omitted. The fluorescent lamp 2 may be attached to the other end side 4b of the cover 4 either after connecting the cover 4 and the cylindrical body 5 or before connecting the cover 4 and the cylindrical body 5.

First, a thin plate-shaped first portion is formed on the top portion 5a of the cylindrical body 5.
The electric power supply 20 is provided. Then, as shown in FIG. 3A, the second power supply 21 of the metal ring is placed on the boundary surface 17 of the protrusion 12 of the cover 4.

Then, as shown in FIG. 3 (b), of the power supply lines 14 a and 14 b drawn from the lighting device 3, the power supply line 14 b is cut from the slit 18 formed in the small cylinder portion 15 of the protrusion 12 to the small cylinder. The power line 14b is inserted through the outside of the portion 15.
The tip end side of is placed on the second power supply terminal 21. At this time, the tip side of the power supply line 14b is located on the boundary surface 17 side,
The protrusion 12 is not exposed to the first screw portion 13. Then, the tip end side of the power supply line 14b is properly connected to the metal ring (second power supply) 21 by connecting means such as welding. That is, at the boundary surface 17, the power line 14
b is electrically connected to a metal ring (second power supply) 21.

On the other hand, the power supply line 14a is guided to the inside of the cylindrical body 5, passes through the hole 24 of the cylindrical body 5 and the hole 25 of the first power supply 20, and is guided to the outside of the cylindrical body 5. The power supply lines 14a, 14b are covered with a tube 26 in the cover 4 so as not to make electrical contact with the power supply lines 14a, 14b or other power supply parts.

Then, the cylindrical body 5 is arranged on the small cylinder portion 15 so that the convex portion 16 of the small cylinder portion 15 and the concave portion 23 of the cylindrical body 5 are positioned in the vertical direction. Then, the outer surface of the small tubular portion 15 is arranged along the inner wall of the cylindrical body 5 so that the cylindrical body 5
Is pushed into the small tube portion 15. Then, the small tubular portion 15 is inserted into the cylindrical body 5. Then, the convex portion 16 engages with the concave portion 23, and the small tubular portion 15 and the cylindrical body 5 are fitted together.

Then, as shown in FIG. 3C, the cylindrical body 5 and the protruding portion 12 of the cover 4 are fitted and connected. At this time, the second power supply 21 made of a metal ring is sandwiched by the cylindrical body 5 and the protrusion 12. Also, power line 1
4b is sandwiched and fixed by the cylindrical body 5 and the projection 12 via the second power supply 21.

After the power supply line 14a is led out from the cylindrical body 5 so as not to bend in the cover 4 and the cylindrical body 5,
The first power supply 20 is welded and electrically connected to the first power supply 20. In this way, the bulb-shaped fluorescent lamp 1
Is assembled.

As shown in FIG. 4, when the light bulb type fluorescent lamp 1 is attached to the light bulb socket 27, the metal ring (second power supply) 21 having a thin plate shape is projected 12.
Is deformed along the first screw part 13 of the light bulb socket 2
Electrical contact is made to the screwed portion (side contact) 28 of 7. That is, when the second threaded portion 22 of the cylindrical body 5 is screwed into the threaded portion 28 of the light bulb socket 27, the metal ring (second power supply) 21 eventually reaches the lower end of the threaded portion 28. Then, it deforms inward, and then deforms between the first screw portion 13 and the screwed portion 28. Since the metal ring (second power supply) 21 is thin, it easily deforms along the first screw portion 13. Then, when the second threaded portion 22 of the cylindrical body 5 and the first threaded portion 13 of the protruding portion 12 are further screwed into the threaded portion 28 of the light bulb socket 27, the first power supply 20 is connected to the light bulb. It contacts the top contact 29 of the socket 27.

The bulb-type fluorescent lamp 1 includes the first electronic power supply 20.
When the second power supply 21 is supplied with power from the top contact 29 and the screwed portion (side contact) 28 of the light bulb socket 27, the lighting device 3 is supplied with power via the power supply lines 14a and 14b. Then, the lighting device 3 operates to output high frequency power to light the fluorescent lamp 2.

As described above, the fitting of the cylindrical body 5 and the projecting portion 12 of the cover 4 is firm because the convex portion 16 of the small tubular portion 15 is engaged with the concave portion 23 of the cylindrical body 5. Therefore, when the second threaded portion 22 of the cylindrical body 5 and the first threaded portion 13 of the protruding portion 12 are screwed into the threaded portion 28 of the light bulb socket 27, it is possible to prevent the base portion 19 from being removed. It can be prevented.

The base 19 is provided with a second power supply 21.
Is not formed into a shell structure extending over the threaded portion 28 of the light bulb socket 27, but is formed into a metal ring arranged between the cylindrical body 5 and the protruding portion 12, so that reduction of metal material can be achieved. it can.

Further, since the second power supply terminal 21 is sandwiched between the cylindrical body 5 and the projecting portion 12 of the cover 4, it is not necessary to fix the second power supply terminal 21 by a special means, and the light bulb is not necessary. The assembling work of the shaped fluorescent lamp 1 can be improved.

Further, since the second power supply terminal 21 is formed as a thin metal ring that deforms along the first threaded portion 13, it is connected to the threaded portion (side contact) 28 of the bulb socket 27. The electrical contact can be facilitated. Further, since the metal ring 21 is thin, the metal ring 21 conforms and deforms along the first screw portion 13. Therefore, the bulb-shaped fluorescent lamp 1 can be easily removed from the bulb socket 27 and can be reattached to the bulb socket 27.

In this embodiment, the second power supply 21
However, the second power supply terminal 21 is not limited to this due to the nature of the present invention, and the shape along the first screw portion 13 or the second screw portion 22 is not limited to this. It may be processed in advance.

When the bulb-type fluorescent lamp 1 reaches the end of its lamp life and is discarded, first, the first power supply terminal 20 is removed from the cylindrical body 5, and the power supply line 14a is disconnected on the first power supply terminal 20 side. To do. Then, for example, a driver is inserted between the cylindrical body 5 and the protruding portion 12 (the protruding portion main body 12A) of the cover 4 to open the cylindrical body 5 by punching. Then, the engagement between the convex portion 16 of the small tubular portion 15 and the concave portion 23 of the cylindrical body 5 is released, and the cylindrical body 5 is removed from the protruding portion 12.
Then, the power supply line 14b is cut from the first power supply terminal 21 and separated from each other.

Then, the locking piece of the holding body 8 supporting the fluorescent lamp 2 is removed from the locked portion of the other end side 4b of the cover 4 and the lamp lines 10a and 10b are cut, whereby the fluorescent lamp 2 is cut. Is separated from the cover 4. When the lighting device 3 is removed from the cover 4, the bulb-type fluorescent lamp 1 has the first and second power supply terminals 20 and 21 made of metal of the base portion 19, the non-conductive cylindrical body 5 of the base portion 19, Cover 4 made of insulating material, lighting device 3 and fluorescent lamp 2
Is separated into That is, in the light bulb type fluorescent lamp 1, the used members can be easily separated and collected.

Next, a second embodiment of the present invention will be described.

FIG. 5 is a front view of a bulb-type fluorescent lamp showing a second embodiment of the present invention. The same parts as those in FIG. 1 are designated by the same reference numerals and the description thereof is omitted.

The light bulb type fluorescent lamp 30 shown in FIG.
In the bulb-type fluorescent lamp 1 shown in (1), a thin flat wire 31 (second power supply) is connected to the tip of the power supply line 14b at the boundary surface 17 and led out to the outside of the protrusion 12. The flat wire 31 is fixed to the first screw portion 13 with a conductive adhesive along the first screw portion 13.

The bulb-type fluorescent lamp 30 includes the first power supply 2
Power can be supplied from the bulb socket 27 via the zero and the flat wire 31.

[0056]

According to the first aspect of the present invention, the first and second power supply terminals are arranged at the top of the cylindrical body and between the cylindrical body and the projecting portion, respectively. Easy to connect with the electric wire,
Since the projecting part of the cover and the cylindrical body which are respectively formed with the second screw part are connected to each other, the cylindrical body can be removed from the projecting part of the cover when the bulb-type fluorescent lamp is mounted in the bulb socket. Can be prevented.

According to the second aspect of the present invention, since the second power supply terminal is sandwiched between the cylindrical body and the projecting portion of the cover, it is not necessary to fix the second power supply terminal by a special means, and the light bulb type The assembling work of the fluorescent lamp can be improved.

According to the invention of claim 3, when the first screw portion of the projecting portion and the second screw portion of the cylindrical body are screwed into the socket for the electric bulb, the metal ring has the first screw portion. Since the metal ring and the socket for a light bulb can be easily contacted with each other, the metal ring can be easily contacted.

[Brief description of drawings]

FIG. 1 is a front view of a light bulb shaped fluorescent lamp showing a first embodiment of the present invention.

FIG. 2 is a schematic sectional view of a cover and a cylindrical body.

FIG. 3 is an explanatory view showing a process of connecting the cover and the cylindrical body.

FIG. 4 is a mounting state diagram showing mounting of a bulb-type fluorescent lamp in a bulb socket.

FIG. 5 is a front view of a light bulb shaped fluorescent lamp showing a second embodiment of the present invention.

FIG. 6 is an exploded front view of the bulb-type fluorescent lamp according to the related art 1.

FIG. 7 is a partially cutaway front view of a bulb-type fluorescent lamp according to Related Art 2.

[Explanation of symbols]

1,30 ... Bulb type fluorescent lamp 2 ………… Fluorescent lamp 3 ………… Lighting device 4 ………… Cover 5 ………… Cylinder 20 ... First power supply 21 ... Second power supply

Claims (3)

[Claims] 1. A fluorescent lamp having a non-linear bulb in which a pair of electrodes are sealed in the same direction; a lighting device for lighting the fluorescent lamp; a first screw that can be screwed into a socket for a light bulb at one end side thereof. A cover integrally formed with an insulating material, which has a hollow protruding portion formed with a hollow portion, the fluorescent lamp is attached to the other end side, and the lighting device is housed therein; A non-conductive cylindrical body that is connected to the first threaded portion of the protrusion and is formed with a second threaded portion that can be screwed into the bulb socket; and a first threaded portion that is disposed on the top of the cylindrical body. A light bulb-shaped fluorescent lamp comprising: a power supply; and a second power supply disposed between the cylindrical body and the protrusion. 2. The bulb-type fluorescent lamp according to claim 1, wherein the cylindrical body and the protrusion of the cover are fitted and connected to each other to sandwich the second power supply terminal. 3. The bulb-type fluorescent lamp according to claim 1, wherein the second power supply device is composed of a plate-shaped metal ring that is deformable along the first screw portion of the protruding portion. .