JPH0714548A - Bulb type fluorescent lamp - Google Patents

Abstract

PURPOSE:To provide an economical bulb type fluorescent lamp excellent in assembling workability and preventing the extreme reduction of light flux and the reduction of the external appearance and commercial value. CONSTITUTION:This bulb type fluorescent lamp is provided with a double U-shaped fluorescent tube 1, a holder 2 holding both end sections 1a of the fluorescent tube 1 at a hold section 2a, a lighting circuit 3 lighting the fluorescent tube 1, a case 4 storing the lighting circuit 3, and a globe 6 storing the fluorescent tube 1 and constituting an envelope 5 together with the case 4. A plurality of projections 2b each having a slope reduced in diameter toward the opposite side to the fluorescent tube 1 of the holder 2 are formed on the inner face of the hold section 2a of the holder 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compact fluorescent lamp.

[0002]

2. Description of the Related Art In a conventional light bulb type fluorescent lamp, as shown in FIG. 4, both ends 1a of a fluorescent tube 1 are provided with a cylindrical holding portion 8 of a holder 2.
Then, both ends 1a of the fluorescent tube 1 and the holding portion 8 of the holder 2 were fixedly held by the silicone adhesive 7.

[0003]

However, in the conventional compact fluorescent lamp, the fixing of the fluorescent tube 1 and the holder 2 with the silicone adhesive 7 is unreliable, and therefore a large amount of the silicone adhesive 7 is used. Not only the cost is increased, but also the curing time becomes long and the assembly workability is significantly impaired. Further, the silicone adhesive 7 releases the low-molecular-weight siloxane from the silicone adhesive 7 due to the heat during the lighting of the lamp, which causes the globe 6 to become cloudy, which may lead to an extreme decrease in luminous flux, a decrease in appearance, and a decrease in commercial value. For this reason, it is desired to mechanically fix the fluorescent tube 1 such that the silicone adhesive 7 is not used or the amount thereof is reduced. Further, since both ends 1a of the fluorescent tube 1 are sealed by the burners, there are large variations in outer diameter. Therefore, when fixing, it is also necessary to have a structure that absorbs the dimensional variation. Therefore, triangular ribs 9a are provided on the inner surface of the holding portion 9 of the holder 2 as shown in FIG. 5 along the axial direction of the holding portion 9, and both end portions 1a of the fluorescent tube 1 are inserted into the holding portion 9 to fix the fluorescent tube 1 in place. Although it is fixed to the holder 2, such a structure has a problem that both end portions 1a of the fluorescent tube 1 cannot be completely inserted into the holding portion 9 or may be removed even if it is inserted. there were.

The present invention has been made in order to solve such a problem, and is economical, has excellent workability in assembling, and is capable of preventing an extreme decrease in luminous flux, appearance, and deterioration in commercial value. Form fluorescent lamp.

[0005]

A compact fluorescent lamp according to the present invention comprises a fluorescent tube, a holder that holds both ends of the fluorescent tube in holding sections, a lighting circuit for lighting the fluorescent tube, and A case containing the lighting circuit and the fluorescent tube are stored.
Also, in a light bulb-shaped fluorescent lamp including a globe forming an envelope with the case, a convex portion having an inner surface of a holding portion of the holder, a slope having a diameter decreasing toward the side opposite to the fluorescent tube of the holder. A compact bulb-shaped fluorescent lamp having a plurality of formed.

[0006]

With this structure, both ends of the fluorescent tube are inserted while tilting the plurality of sloped convex portions formed on the inner surface of the holder of the holder, and both ends of the fluorescent tube are pushed back by the plurality of sloped convex portions. Will be fixed to the holder of the holder.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the bulb-type fluorescent lamp of the embodiment of the present invention includes a double U-shaped fluorescent tube 1, a holder 2 in which both ends 1a of the fluorescent tube 1 are held by holding portions 2a, and a fluorescent tube. 1, a lighting circuit 3 for lighting the lighting circuit 1, a case 4 accommodating the lighting circuit 3, and a globe 6 accommodating the fluorescent tube 1 and forming an envelope 5 with the case 4. Then, as shown in FIG. 2, a plurality of convex portions 2b having an inclined surface whose diameter becomes smaller toward the side opposite to the fluorescent tube of the holder 2 are formed on the inner surface of the holding portion 2a of the holder 2. Both ends 1a of the fluorescent tube 1 are inserted into the holding portion 2a, and the fluorescent tube 1 is fixedly held by the holder 2.

As shown in FIG. 3, after the fluorescent tube 1 and the holder 2 are fixedly held, both ends 1a of the fluorescent tube 1 and the holder 2 are fixed with a silicone adhesive 7 so that the fluorescent light is The tube 1 and the holder 2 can be more firmly fixed and held.

As described above, in the compact fluorescent lamp of the present invention, both ends 1a of the fluorescent tube 1 are inserted while pushing down the convex portions 2b formed on the inner surface of the holder 2a of the holder 2. Therefore, the insertion can be performed easily, and the variation in the outer diameter of the both ends 1a of the fluorescent tube 1 can be absorbed by the protrusion 2b. Moreover, the both ends 1a of the inserted fluorescent tube 1 are fixed by being pushed back by the force of returning to the original of the convex portion 2b, and the both ends 1a of the fluorescent tube 1 can be prevented from coming off. Therefore,
Silicone adhesive 7 for fixing and holding the fluorescent tube 1 to the holder 2 is not used, or the amount of the silicone adhesive 7 is small, and the fluorescent tube 1 can be firmly fixed and held to the holder 2, which is economical and excellent in assembly workability. And the extreme decrease in luminous flux and appearance,
It is possible to prevent a decrease in commercial value.

[0011]

As described above, the bulb-type fluorescent lamp of the present invention can easily insert the fluorescent tube into the holding portion of the holder and can absorb the variation in the outer diameter of both ends of the fluorescent tube. In addition, the fluorescent tube inserted in the holder of the holder can be mechanically fixed without coming off, it is economical and has excellent assembly workability, and it is possible to prevent an extreme decrease in luminous flux, appearance, and decrease in commercial value. it can.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view of a compact fluorescent lamp according to an embodiment of the present invention.

[FIG. 2] Similarly, an enlarged front view of a notched part

FIG. 3 is an enlarged front view of a notch of a main part when the end portion of the fluorescent tube and the holding portion of the holder are fixed and held with a silicone adhesive.

FIG. 4 is a partially cutaway front view of a conventional compact fluorescent lamp.

FIG. 5 is an enlarged front view of a cutout of a main part of a conventional light bulb-shaped fluorescent lamp holder.

[Explanation of reference numerals] 1 fluorescent tube 1a both ends of fluorescent tube 2 holder 2a holder holding portion 2b convex portion 3 lighting circuit 4 case 5 envelope 6 globe

Claims (1)

[Claims] 1. A fluorescent tube, a holder that holds both ends of the fluorescent tube in holding sections, a lighting circuit for lighting the fluorescent tube, a case that houses the lighting circuit, and a housing for the fluorescent tube. And a bulb-shaped fluorescent lamp provided with a globe forming an envelope with the case, the inner surface of the holding portion of the holder has an inclined surface that becomes smaller in diameter toward the side opposite to the fluorescent tube of the holder. A compact bulb-shaped fluorescent lamp having a plurality of convex portions.