JP2003257203A - Compact self-ballasted fluorescent lamp and illumination apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact self-ballasted fluorescent lamp in which the automatic connection work of a pair of wires lead out of the lighting device is done steadily and the assembly work is simplified. <P>SOLUTION: A cover 1 is fitted to the holder 3 and a side wire 6a and a top wire 6b move toward the opening side of the cylinder part 1b while contacting the inside face of the cover 1, and are lead out of the opening of the cylinder part 1b while the protruded part is positioned between the side wire 6a and the top wire 6b. Thereby, a pair of wires 6a, 6b are restrained from becoming entangled each other and wiring at the time of automatic assembly can be done steadily, and the working efficiency is improved. <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 bulb-type fluorescent lamp in which a base and a lighting device are electrically connected by a pair of electric wires led from the lighting device in a cover.

[0002]

2. Description of the Related Art Conventionally, in a so-called light bulb type fluorescent lamp, an arc tube and a lighting device are electrically connected to each other, and a desired portion of a cap shell is fixed by caulking and fixed, and a top wire connected to the lighting device is connected to a cap eyelet portion. In addition, a configuration is known in which a side wire is electrically and mechanically connected to a base shell portion. For example, the structure is disclosed in Japanese Patent Laid-Open No. 2000-48633.

[0003]

However, in the conventional structure in which the top wire connected to the lighting device is electrically and mechanically connected to the mouthpiece eyelet portion and the side wire is connected to the mouthpiece shell portion, respectively, the assembling apparatus is used. However, there is a problem that the automatic assembling work becomes difficult. That is, when the lighting device is housed in the cover, the top wire and the side wire are led out from the opening formed in the cylindrical portion of the cover to which the base is attached. There were times when we couldn't position accurately because of the entanglement. The top wire and the side wire are guided from the opening of a relatively large diameter on the holder mounting side of the cover while coming into contact with the inner surface of the cover, and guided out from the opening of the cylindrical portion of a relatively small diameter. At this time, a pair of electric wires easily cross each other and become entangled.

As described above, when the top wire and the side wire are entangled with each other, it is not possible to accurately position these wires, which not only hinders the work of mounting the mouthpiece, but also causes the side wire to be attached before the mouthpiece is attached. When the wire is pulled out to the side of the cylindrical portion, the top wire is pulled together with the side wire toward the mouthpiece shell, which makes the positioning of the top wire even more difficult and the wiring work becomes complicated.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a bulb-type fluorescent lamp in which an automated work of connecting a pair of electric wires derived from a lighting device is surely performed and an assembling work is simplified. To aim.

[0006]

According to a first aspect of the present invention, there is provided a self-ballasted fluorescent lamp having a bent arc tube, a holder for supporting the arc tube, and a lighting circuit for lighting the arc tube. And a cover having a cylindrical portion having an opening on one end side and accommodating the lighting device and having the holder attached on the other end side; A pair of electric wires led out to the opening side; a convex portion formed so as to project from the inner surface of the cylindrical portion of the cover so as to be located between the pair of electric wires; and the cylindrical portion adhered to the cylindrical portion of the cover. A base having a base eyelet part and a base shell part to which a pair of electric wires led out from the opening are electrically connected; and a bulb-type fluorescent lamp.

When the electronic component is located in the cylindrical portion, the convex portion on the inner surface of the cover cylindrical portion is formed so as to protrude so as not to contact the electronic component. For example, it is formed in the vicinity of the cutout portion that leads out the side wire from the inner surface of the cylindrical portion toward the center of the circle. However, in the case where an electronic component or the like does not interfere, it may be formed so as to be located between the pair of electric wires extending from the lighting device, and the protruding shape thereof is not limited.

According to the first aspect of the invention, when the lighting device is housed in the cover, the pair of electric wires are led out from the opening of the cylindrical portion of the cover with the convex portions located between them. , The pair of electric wires is prevented from being entangled with each other, and the pair of electric wires can be reliably positioned during automatic assembly.
Work efficiency is improved.

A lighting fixture according to a second aspect of the invention is characterized by comprising the light bulb type fluorescent lamp according to the first aspect; and a fixture main body to which the light bulb type fluorescent lamp is mounted.

According to the second aspect of the present invention, it is possible to provide a lighting fixture equipped with the bulb-type fluorescent lamp having the action of the first aspect of the present invention.

[0011]

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

FIG. 1 is a front view showing a self-ballasted fluorescent lamp according to a first embodiment of the present invention. FIG. 2 is a partially sectional assembly view showing the bulb-type fluorescent lamp of FIG. FIG. 3 is a top view showing the bulb-type fluorescent lamp of FIG.

The bulb-type fluorescent lamp L is composed of a cover 1, a base 2, a holder 3, an arc tube 4, a lighting device 5, and the like. In addition, below, the base 2 side is described as an upper side.

The cover 1, which is also called a base, is made of a heat-resistant synthetic resin such as polybutylene terephthalate (PBT) and is integrally molded into a substantially truncated cone shape having an accommodation space inside. And this cover 1
The cover body 1a has an opening downward and expands.
And a cylindrical portion 1b extending from the upper side of the cover body 1a is formed. The cylindrical portion 1b has an opening formed on the upper side, and a convex portion 1c is formed on the inner surface of the cylindrical portion 1b so as to project. The convex portion 1c projects from the inner surface of the cylindrical portion 1b by about 2 to 3 mm in the direction of the central portion thereof.
Is integrally formed by extending about 10 mm from the upper end in the direction of the cover body 1a. Cylindrical portion 1b near this convex portion 1c
A guide cutout 1d for the side wire and an insertion portion 1e are continuously formed in the upper end in the direction of the joint between the guide cutout 1d and the cover body 1a. A part of the upper end of the cylindrical portion 1b is cut out in a substantially triangular shape.

A plurality of engaging portions (not shown) are provided so as to project inside the vicinity of the lower end opening of the cover body 1a.

The base 2 is an Edison type base such as E26 type, and has an eyelet portion 2a and a base shell portion 2b. The eyelet portion 2a and the base shell portion 2b are fixed via an insulating portion 2c made of glass. Further, a screwing portion is formed on the mouthpiece shell portion 2b.

The holder 3 is made of a heat-resistant synthetic resin such as polybutylene terephthalate (PBT) and is formed into a substantially disc shape. A substantially annular substrate mounting portion 3a is integrally formed on the upper end side of the holder 3. A disk surface (not shown) is formed on the lower end side of the holder 3, and a lamp mounting hole is formed on the disk surface at a position corresponding to the apex of the regular hexagon. On the outer peripheral surface of the holder 3, an engaged portion 3b corresponding to an engaging portion (not shown) of the cover body 1a is formed at a substantially central portion in the height direction.

The arc tube 4 is constructed by joining three bending bulbs 4a to form one discharge path. The top part of each bent valve 4a is smoothly bent in a U shape at the middle part, and the straight pipe part of each valve 4a is bent by each valve 4a.
It is configured by joining with. That is, each bending valve 4
The bent portion 4b of "a" is arranged corresponding to each side of the substantially triangular shape. A phosphor layer is formed on the inner surface of each bending bulb 4a, and a rare gas such as argon and mercury are enclosed as an enclosure gas in the bulb 4a.
In the arc tube 4, one continuous discharge path is formed by a communication tube (not shown) that connects the bulbs 4a, and a filament electrode (not shown) is formed at each end of the bulb 4a located at both ends of the discharge path. Are sealed respectively.

The ends of the bulb 4a of the arc tube 4 are inserted into the lamp mounting holes formed in the holder 3, respectively.
The end of a and the disk surface of the holder are bonded and fixed with silicone resin or the like. As a result, the arc tube 4 is supported by the holder 3.

The circuit board 5a of the lighting device 5 is mounted on the board mounting portion 3a of the holder 3.

The lighting device 5 is mounted on the board mounting portion 3a of the holder 3 in a direction orthogonal to the longitudinal direction of the arc tube 4 and with the surfaces of the circuit board 5a parallel to each other. Lighting device 5
Is composed of a disc-shaped circuit board 5a and an inverter circuit for outputting high-frequency power, which is composed of a plurality of electronic components 5b mounted on the upper surface of the circuit board 5a which is the base 2 side. A resonance inductor 5c is arranged substantially in the center of the circuit board 5a, and a relatively large electrolytic capacitor 5d is arranged above the resonance inductor. A part of the electrolytic capacitor 5d is housed in the cylindrical portion 1b of the cover 1 while standing upright on the circuit board 5a. Further, the side wire 6a and the top wire 6b, which are a pair of electric wires serving as a power supply line of the lighting device 5, are lead wires covered with a covering portion, and each of them is a circuit board 5a.
Is connected to the circuit board 5a so as to be led to the non-light-emitting tube 4 side. The arc tube 4 and the lighting device 5 are electrically connected via a lead wire (not shown). Next, the assembling work of the light bulb shaped fluorescent lamp L of the present embodiment will be described.

First, the end of the arc tube 4 is inserted into the mounting hole of the holder 3 and fixed by filling an adhesive such as silicone resin (not shown), and the lighting device 5 is mounted on the non-arc tube 4 side of the holder 3. Prepare the fixed one.

Next, the lighting device 5 is attached to the board mounting portion 3a of the holder 3. After that, the cover 1 is attached to the holder 3, and the lighting device 5 is housed in the cover 1. In the step of attaching the cover 1 and the holder 3, the tips of the pair of wires 6a and 6b are guided while being in contact with the inner surface of the cover 1, and are led out from the opening of the cylindrical portion 1b. At this time, since the convex portion 1d is located between the side wire 6a and the top wire 6b, even if the pair of wires 6a and 6b cross each other, the entanglement is suppressed.

Further, since the side wire 6a is connected to the circuit board 5a so as to be positioned on the side of the insertion portion 1e of the cylindrical portion 1b in the mounted state of the cover 1, the cover 1 and the holder 3 are connected to the circuit board 5a. The tip ends of the side wire 6a and the top wire 6b derived from are positioned by engaging and fixing the side wire 6b in the vicinity of the insertion portion 1e, and the convex portion 1c is positioned between the side wire 6a and the top wire 6b. Thus, the side wire 6a and the top wire 6b are led out from the opening of the cylindrical portion 1b.

Next, the side wire 6a has a guide notch 1
It is pulled out to the bottom of the insertion portion 1e via d, led out to the outside of the cylindrical portion 1b, and folded back so as to be wired along the outer surface of the cylindrical portion 1d.

Then, the base 2 is attached to the cover cylindrical portion 1d, the side wire 6a wired outside the cylindrical portion 1b is brought into contact with the base shell portion 2b, and the top wire 6b is led out to the insertion hole 2d of the eyelet portion 2a. . Then, the top wire 6b is heated and melted by arc welding or the like to be welded to the base eyelet portion 2a, and the end of the base shell portion 2b is fixed by caulking or the like to fix the cover 1 and the base 2 to complete the bulb-type fluorescent lamp L. .

According to the bulb-type fluorescent lamp L of this embodiment, the cover 1 is attached to the holder 3, and the side wires 6a and the top wires 6b move to the opening side of the cylindrical portion 1b while contacting with the inner surface of the cover 1 and Since the convex portion is located between the wire 6a and the top wire 6b and is led out from the opening of the cylindrical portion 1b, it is possible to prevent the pair of wires 6a and 6b from being entangled with each other, and to perform wiring reliably during automatic assembly. And work efficiency is improved.

Although the bulb-type fluorescent lamp L of the above-mentioned embodiment does not have a globe for covering the arc tube 4, it may have a globe.

Further, the bulb 4a has a shape in which even if a bent portion is formed by one glass tube, a bent portion is formed by a plurality of glass tubes, or a plurality of straight tubular glass tubes are connected together. A discharge path may be formed via the. Further, in relation to the holder 3, a simple U-shaped, W-shaped, or U-shaped arc tube may be arranged circumferentially.

Next, an embodiment of the luminaire of the present invention will be described with reference to FIG. FIG. 3 is a schematic cross-sectional view showing an embodiment of the lighting fixture of the present invention. In the figure, 31 is a bulb-type fluorescent lamp, and 30 is a main body of an embedded luminaire. The instrument main body 30 includes a base 32, a reflection plate 33, and the like.

[0031]

According to the first aspect of the invention, when the lighting device is housed in the cover, the pair of electric wires are led out from the opening of the cylindrical portion of the cover with the convex portions located between them. Therefore, the pair of electric wires can be prevented from being entangled with each other, and the pair of electric wires can be reliably positioned during automatic assembly, thus improving work efficiency.

According to the invention described in claim 2 of the present invention, it is possible to provide a lighting fixture provided with the bulb-type fluorescent lamp having the function of the invention described in claim 1.

[Brief description of drawings]

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

FIG. 2 is a partial cross-sectional perspective view of the bulb-type fluorescent lamp of FIG.

FIG. 3 is a top view showing the bulb-type fluorescent lamp of FIG.

FIG. 4 is a schematic sectional view showing an embodiment of a lighting fixture of the present invention.

[Explanation of symbols]

1 ... Cover, 1c ... Convex part, 2 ... Base, 3 ... Holder, 4 ...
Arc tube, 5 ... Lighting device, 6a ... Side wire, 6b ... Top wire

Claims (2)

[Claims] 1. A bent arc tube; a holder for supporting the arc tube; a lighting device having a lighting circuit for lighting the arc tube and attached to the holder; and an opening at one end side. A cover having a cylindrical portion and accommodating the lighting device and having the holder attached to the other end thereof; a pair of electric wires led from the lighting device to an opening side of the cover cylindrical portion; a cylinder of the cover A convex portion formed so as to be located between the pair of electric wires from the inner surface of the portion; and a pair of electric wires which are attached to the cylindrical portion of the cover and led out from the opening of the cylindrical portion are electrically connected. A bulb-type fluorescent lamp, comprising: a base having a base eyelet part and a base shell part. 2. A lighting fixture comprising: the light bulb type fluorescent lamp according to claim 1; and a fixture main body to which the light bulb shaped fluorescent lamp is mounted.