JPH0536385A - Fluorescent lamp device - Google Patents

Abstract

PURPOSE:To provide fluorescent lamp device, in which a temperature fuse reacts quickly for quick operation. CONSTITUTION:In a fluorescent lamp device, a fitting 3 is provided in one end of a cover 1, and while a support member 4 is provided in the other end, and a fluorescent lamp 12 is fitted to the outside of the support member 4, and a ballast 8 is fixed to the inside of the support member 4, and a fitting base 15 is provided in the support member 4, and a starting circuit parts 20 is fitted to the fitting base 15 separately from the ballast 8. A temperature fuse 27 is arranged between the ballast 8 and the starting circuit parts 20. Since the temperature fuse 27 is thereby arranged near the ballast 8, of which temperature rise is largest, and heat is not insulated by the starting circuit parts 20, the temperature fuse 27 reacts quickly for quick operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluorescent lamp device equipped with a fluorescent lamp, a ballast and a starting circuit component, which is attached to a socket via a screw-type base.

[0002]

2. Description of the Related Art Conventionally, a ballast and a starting circuit component such as an electronic starter or a lighting tube are housed in a cover having a screw-type base for an incandescent bulb at one end, and a U-shaped end is provided at the other end of the cover. Fluorescent lamp devices having bent fluorescent lamps, such as letter-shaped, W-shaped, saddle-shaped, etc., have been developed. This type of fluorescent lamp device is compatible with incandescent light bulbs because it can be used by mounting the screw-in base on the socket, and is becoming popular as an energy-saving light source.

By the way, in this type of fluorescent lamp device, since the ballast and the starting circuit component are housed in the cover, the starting circuit component is likely to receive the heat of the ballast. That is, of the constituent materials of this type of fluorescent lamp device, the ballast is the member that generates the most heat, and if a starting circuit component is provided near this heat source, the heat from the ballast is transmitted to this starting circuit component. , The starting circuit components are easily deteriorated by heat. In particular, when an electronic starter is used as the starting circuit component, this type of electronic starter is a component that is weak against heat, so the electronic starter may be thermally deteriorated and may malfunction.

For this reason, the applicant of the present invention provided a mounting base on the supporting member for supporting the ballast, mounted the starting circuit component on the mounting base, and arranged the starting circuit component away from the ballast. A fluorescent lamp device with a structure was proposed. In addition, in this case, a structure has also been proposed in which the starting circuit component is housed in the base to be isolated from the space inside the cover.

[0005]

By the way, in this type of fluorescent lamp device, when a temperature fuse is provided for the purpose of immediately shutting off the energizing circuit and ensuring safety when the temperature of the lamp device rises abnormally. There is a conventional structure in which a thermal fuse is housed in the base from the viewpoint of utilizing the dead space. However, as described above, the inside of the base is a portion where heat is isolated from the ballast inside the cover, and is a place which is thermally separated from the ballast that generates the most heat among the constituent parts.

That is, when the temperature of the lamp device rises abnormally, the heat generated by the ballast is the greatest cause. Therefore, it is desirable that the thermal fuse should detect the heat of the ballast as a heat source.

Despite this, in the conventional case, the thermal fuse is housed in a thermally separated space, and because it is thermally shielded by the starting circuit parts, the reaction at the time of abnormality is slow and the operation tends to be delayed. I was worried.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a fluorescent lamp device in which the reaction of the thermal fuse is quick and the operation is quick.

[0009]

To achieve the above object, the present invention is characterized in that a temperature fuse is arranged between a ballast and a starting circuit component, for example, in a state of being supported by a mounting base.

[0010]

According to the structure of the present invention, since the thermal fuse is arranged between the ballast and the starting circuit component, the thermal fuse is installed near the ballast having the largest temperature rise. Since there is no heat shielding by the starting circuitry, the thermal fuse is more responsive and quicker to operate.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an embodiment shown in the drawings.

In the figure, reference numeral 1 denotes a cover made of synthetic resin, and a cylindrical portion 2 is integrally formed at one end of the cover 1. A screw-type die 3 such as E26 type is attached to the cylindrical portion 2 and is fixed by an adhesive or caulking.

A guide groove 31 for leading out the lead wire 30 is formed on the cylindrical portion 2 as shown in FIG. For this reason, there is a concern that the mechanical strength of the opening of the cylindrical portion 2 may decrease, so that the opening of the cylindrical portion 2 is formed with a rib 32 that straddles the diameter. Therefore, the cylindrical portion 2
It is prevented that the diameter of the opening is reduced. In this case, the lower surface of the rib 32, that is, the inner surface is a taper surface 33 or a curved surface as shown in FIG. 1, and even if the lead wire 30 led out from the inside of the cover-1 hits the lower surface of the rib 32, this tape 32 is formed. The outer surface 33 or the curved surface is slid obliquely and guided to the outside.

The other end of the cover 1 is open.
A support board 4 corresponding to the support member of the present invention is attached to the opening, and the other end opening of the cover 1 is closed by the support board 4.

The support board 4 is made of a heat-resistant synthetic resin such as polyethylene terephthalate, and has a circular dish shape. A flange portion 5 is formed at the opening edge of the support board 4, and notches 6 are formed in the flange portion 5 so as to be spaced apart from each other in the circumferential direction. A plurality of locking protrusions 7 ... Are formed on the inner surface of the cover 1, and the cutouts 6 of the support board 4 are inserted into the locking protrusions 7 of the cover 1,
The flange portion 5 is supported by the locking projections 7 by slightly rotating and displacing the support board 4, whereby the support board 4 is fixed to the cover 1 with an adhesive or the like. A ballast 8 is attached to the support board 4. The ballast 8 is joined to the support board 4 by a silicon adhesive 9 filled in the bottom of the support board 4. The support board 4 is formed with cylindrical portions 11, 11 having insertion holes 10, 10 penetrating the bottom. Fluorescent lamps 12 are attached to the insertion holes 10 and 10. The fluorescent lamp 12 may be U-shaped, W-shaped or the like, but a saddle-shaped fluorescent lamp is used in this embodiment.

In such a bendable fluorescent lamp 12, the sealing portions 13 at both ends are inserted into the insertion holes 10 and 10 formed in the support board 4, and silicon bonding (not shown) is provided inside the support board 4. It is fixed to the support board 4 with a chemical. Further, rectangular locking holes 14, 14 are formed on the inner surface of the peripheral wall of the support board 4 so as to face each other.
A mounting base 15 is fitted to the parts 4 and 14.

The mounting base 15 has a pair of support legs 16 and 16 and a holding plate 17 integrally formed between the support legs 16 and 16, and the support legs 16 and 16 support the support plate 4.
Are fitted into the locking holes 14 of and fixed with an adhesive or the like. As a result, the mount 15 is fixed to the support board 4.

The holding plate 17 is separated from the ballast 8 fixed to the support board 4, and thus faces the ballast 8. A starting circuit component such as an electronic starter 20 is attached to the holding plate 17. Electronic starter 2
0 is configured by mounting an electrolytic capacitor 22, a choke coil 23, a capacitor 24, etc. on a circuit board 21.

The circuit board 21 is attached to the holding plate 17 separately from the upper surface of the holding plate 17. That is,
A support piece 25 and a locking claw 26 are integrally formed on the holding plate 17 so as to project therefrom.
It is supported by No. 5 and is hooked by the locking claw 26. Therefore, the circuit board 21 is separated from the upper surface of the holding plate 17, and a gap is secured between the lower surface of the circuit board 21 and the upper surface of the holding plate 17. A leg portion and solder that travel downward from the lower surface of the circuit board 21 are interposed in this gap.

That is, the electrolytic capacitor 2 is provided on the circuit board 21.
2 and the electronic components such as the choke coil 23 and the capacitor 24 are mounted, the leg portions of these components are mounted on the circuit board 21.
Penetrates through and protrudes to the lower surface, and solder also travels from the lower surface.
In order to prevent these business trip portions from coming into contact with the upper surface of the holding plate 17, the circuit board 21 is separated from the holding plate 17 and attached to the holding plate 17.

The holding plate 17 faces the base 3. That is, the holding plate 17 faces the inner end of the cylindrical portion 2 formed in the cover 1, and the electronic starter 20 attached to the holding plate 17 is housed in the cylindrical portion 2. Further, the lead wire 30 is led from the circuit board 21.

A thermal fuse 2 is provided on the lower surface of the holding plate 17.
7 is attached. That is, the lower surface of the holding plate 17 is provided with the positioning protrusions 28 at positions near the supporting legs 16 and 16, and the thermal fuse 27 is fitted between the protrusions 28 and the supporting legs 16. And the temperature fuse 27
The lead wire 29 is wound around the upper end of the support leg 16, so that the thermal fuse 27 is mechanically supported by the mounting base 15. Reference numeral 35 in the drawing denotes a ventilation hole formed in the cover 1 for promoting a heat radiation effect in the cover 1. The operation of the embodiment having such a configuration will be described.

The ballast 8 generates heat while the lamp 12 is on. However, the heat-sensitive electronic starter 20 is separated from the ballast 8 via the mounting base 15 and faces the ballast 8 with a space, so that the proportion of the ballast 8 receiving radiant heat is reduced. To be done.

That is, the mounting base 15 has the support legs 16, 16
Since it is attached to the support board 4 via and is separated from the support board 4, it is difficult to receive the heat of the ballast 8. Therefore, the temperature rise of the mounting base 15 is prevented, the electronic starter 20 fixed to the mounting base 15 is less likely to be heated, and thermal damage to the electronic starter 20 and performance deterioration due to heat can be prevented.

Particularly in the case of this embodiment, since the electronic starter 20 is housed in the cylindrical portion 2 to which the cap 3 is attached, the high temperature air in the cover 1 is unlikely to enter into the cylindrical portion 2 and the electronic starter 20 is thermally activated. The electronic starter 20 can be thermally protected because it is a space isolated from.

A thermal fuse 27 is attached to the lower surface of the holding plate 17. That is, the thermal fuse 2
7 is a ballast 8 and an electronic starter 20 as a starting circuit component.
Since it is placed between and, it is located near the ballast 8 where the temperature rises the most during lighting, so if the ballast 8 abnormally generates heat, it immediately senses this temperature and reacts, and operates quickly. . That is, the thermal fuse 27 shuts off the energizing circuit to bring the lamp to a spot, and prevents further temperature rise.

In this case, the thermal fuse 27 is the holding plate 17.
Since it is fitted between the positioning protrusion 28 formed on the lower surface of the and the support leg 16, the mounting position of the thermal fuse 27 does not vary, and the sensing performance does not vary from product to product.

Further, since the thermal fuse 27 is supported by the mounting base 15 by winding the lead wire 29 around the upper end portion of the supporting leg 16, no special mounting parts for mounting the thermal fuse 27 are required. The present invention is not limited to the configuration of the above embodiment. That is, in the above-described embodiment, the case where the fluorescent lamp 15 is used as it is exposed has been described, but the fluorescent lamp 15 may be covered with a translucent groove. Further, the starting circuit component is not limited to the electronic starter, and may be a known lighting tube. The mount may be formed integrally with the support member.

[0029]

As described above, according to the present invention, since the thermal fuse is arranged between the ballast and the starting circuit component, this thermal fuse is installed near the ballast having the largest temperature rise. In addition, since the heat is not shielded by the starting circuit components, the reaction of the thermal fuse is quick, the operation is quick, and the safety is high.

[Brief description of drawings]

FIG. 1 is a sectional view of an entire fluorescent lamp device showing an embodiment of the present invention.

FIG. 2 is an exploded perspective view showing a main part of the embodiment.

FIG. 3 is an exploded perspective view of a mouthpiece portion of the embodiment. 1 ... Cover-, 2 ... Cylindrical part, 3 ... Clasp, 4 ... Support board, 8 ...
Ballast, 12 ... Fluorescent lamp, 15 ... Mounting base, 16 ... Support leg, 17 ... Holding plate, 20 ... Electronic starter, 21 ... Circuit board, 27 ... Thermal fuse, 28 ... Positioning protrusion.

Claims (2)

[Claims] 1. A cover is provided with a base at one end and a support member is provided at the other end, a fluorescent lamp is attached to the outside of the support member, and a ballast is fixed to the inside of the support member. In the fluorescent lamp device in which a mounting base is provided on the mounting base, and the starting circuit component is attached to the mounting base separately from the ballast, a temperature fuse is arranged between the ballast and the starting circuit component. Fluorescent lamp device. 2. The fluorescent lamp device according to claim 1, wherein the thermal fuse is attached to a mount supporting the starting circuit component.