JPS62252002A - Bulb base type fluorescent lamp - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a bulb base type fluorescent lamp that can be used by being directly inserted into a light bulb socket.

Conventional technology Conventionally, with the main purpose of energy-saving lighting, non-linear fluorescent tubes such as double U-shaped fluorescent tubes 1 are placed inside an envelope with a base.
BACKGROUND OF THE INVENTION Light bulb cap type fluorescent lamps have been put into practical use because they have an easy-to-handle and compact structure that houses an electronic ballast etc. attached to a circuit board. The envelope consists of a light-transmitting glove and a cup-shaped non-light-transmitting cover, and two spaces are formed within the envelope, separated by a holder. The non-linear fluorescent tube is fixed to the outside of the holder and installed on the glove side, while the electronic ballast is fixed to the inside of the holder via a circuit board with adhesive or screws and installed on the cover side. It is being

Problems to be Solved by the Invention However, in such bulb base type fluorescent lamps, the workability of assembling the circuit board to the holder is poor, and the use of fixing means such as adhesive as described above is expensive. Especially when adhesive is used, the adhesion is unreliable.
Furthermore, since the circuit board was circular, it was difficult to confirm the positioning (which hindered the improvement of assembly work efficiency).

The present invention has been made to solve these problems, and it is possible to quickly and reliably fix a circuit board to a holder, facilitate positioning of the circuit board, and improve assembly workability. An object of the present invention is to provide a light bulb base type light lamp that can reduce costs.

Means for Solving the Problems In order to solve these problems, the present invention provides a cap-shaped holder in which a fluorescent tube is fixed inside an envelope having a cap, and a cap-shaped holder located on the opposite side of the opening of the holder. A plurality of elastic pawls are formed by providing a plurality of notches in a part of the side surface, and a slope is formed on the inner surface of the pressure, which approaches the center of the holder as it goes toward the tip. Inside,
The light bulb base type light lamp is characterized in that a substantially semicircular circuit board with an electronic ballast attached thereto is inserted, the circuit board is passed over the pressure, and the circuit board is fixed inside the holder by the pressure. That is.

When the circuit board is inserted into the working holder and the circuit board is pushed in, the peripheral edge of the circuit board pushes the plurality of elastic claws outward, and the circuit board passes over these claws. It is inserted deep inside the holder. After the circuit board passes through the claws, the claws move inward and return to their original state. As a result, the circuit board is fixed to the inside of the holder with the claws.

Embodiment As shown in FIG. 1, a light bulb cap type light lamp according to an embodiment of the present invention includes a light-transmitting spherical globe 1 made of glass, plastic, etc., and an opaque globe 1 made of plastic, etc. fixed to the opening thereof. A holder 4 made of plastic or the like is fixed to the inside of the cover 2, and both legs are placed in a 2gi cylindrical socket 5 provided on the outside of this holder. A non-linear fluorescent tube, such as a double U-shaped fluorescent tube 6, is inserted and fixed into the globe 1, a circuit board 7 is fixed to the inner part of the holder 4, and an electronic ballast is attached to this circuit board. It consists of 8 mag.

The double U-shaped fluorescent tube 6 has electrodes (not shown) at both ends, is filled with mercury and rare gas, and has a phosphor coating (
(not shown) is formed.

The structure for fixing the circuit board 7 with an electronic ballast to the holder 4 is as follows. That is, as shown in Figure 2,
By providing a plurality of notches 10 in a portion of the side surface 9 of the cap-shaped holder 4 located on the side opposite to the holder opening, a plurality of elastic claws 11 are formed. On the inner surface of each claw, a slope is formed which approaches the center of the holder 4 toward the tip. Further, the holder 4 has two parts for storing a capillary sealing part (not shown) of the double U-shaped fluorescent tube 5.
41 bag portions 12 are provided to protrude inward. Four lead wires 13 of the double U-shaped fluorescent tube 5 are inserted into the slits 41I formed in both bag portions 12, respectively. On the other hand, the circuit board 7 with the electronic ballast 8 attached to the negative side has a substantially semicircular shape. A lead wire 13 is connected to this electronic ballast.

Next, a method for fixing a circuit board inside such a holder will be explained.

The circuit board 7 is inserted through the opening into the holder 4 to which the double U-shaped fluorescent tube 5 is fixed on the outside, and the circuit board is pushed in. Then, a plurality of claws 11 are formed on the periphery of the circuit board 7.
Since the circuit board 7 is pushed outward, the circuit board 7 passes over these claws and is inserted deep into the holder 4. After the circuit board 7 passes through the claws 11, the claws 11 move inward due to their elasticity and return to their original state. As a result, the circuit board 7 is firmly fixed to the inner part of the holder 4 by the claws 11.

In FIG. 2, reference numeral 14 indicates a rib on which the circuit board 7 is placed.

Note that the glove 1, the cover 2, and the holder 4 are fixed to each other by using an adhesive, or, for example, by forming a plurality of pairs of recesses in the circumferential direction on the inner surface of the cover 2. A plurality of convex portions are formed in each of the brim portions of 4, and a plurality of notches are provided in the brim portion, each notch is aligned with the recessed portion, and the recessed portion is passed through the notch, and the holder 4 or the cover 2 and It is possible to appropriately employ a mechanical coupling structure such as fitting the protrusions of the glove 1 and the protrusions of the holder 4 into each recess of the cover 2 by rotating the cover 2 or the glove 1.

With the above structure, according to the light bulb base type fluorescent lamp of the embodiment of the present invention, the circuit board 7 can be fixed quickly and reliably inside the holder 4, and unlike the conventional circuit board 7, the circuit board 7 has a circular shape. Since the circuit board 7 has a substantially semicircular shape instead of a semi-circular shape, when inserting the circuit board 7 into the holder 4, the positioning becomes clear, and therefore the fixing operation becomes easy and automation thereof is also possible. Furthermore, since the circuit board 7 can be fixed to the holder 4 without using any adhesive or screws, costs can be reduced. Moreover,
Since the circuit board 7 is inserted into the holder 4 while avoiding the bag portion 12 that protrudes inside the holder 4, the thickness of the holder 4 is thinner than that of conventional lamps. The overall length of the device is also short, allowing for miniaturization.

DETAILED DESCRIPTION OF THE INVENTION As described in detail, according to the present invention, a circuit board with an electronic ballast can be fixed quickly and firmly inside a holder, and the positioning of the circuit board can be made clear, making it easy to fix the circuit board. It is possible to provide a light bulb base type fluorescent lamp that can improve workability and further reduce costs.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a light bulb base type fluorescent lamp according to an embodiment of the present invention, and FIG. 2 is an exploded perspective view of the same essential parts. 1...Glove, 2...Cover, 3.
...Base, 4...Holder, 6...
・Double U-shaped fluorescent tube, 7... Circuit board, 8.
...Electronic ballast, 9...Side part, 10.
...Notch, 11...Claw. Name of agent: Patent attorney Toshio Nakao and one other person Figure 1 Figure 2

Claims (1)

[Claims] A cap-shaped holder to which a fluorescent tube is fixed is provided in an envelope having a base, and a plurality of elastic claws are formed by providing a plurality of notches in a part of the side surface of the holder opposite to the opening. The inner surface of the claw is formed with a slope that approaches the center of the holder toward the tip, and a substantially semicircular circuit board with an electronic ballast attached thereto is inserted into the holder, and the circuit board is inserted into the holder. The light bulb cap type fluorescent lamp is characterized in that the circuit board is fixed to the inside of the holder by the claws, and the circuit board is fixed to the inside of the holder by the claws.