JPH0229604Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a single-cap type fluorescent lamp device that includes a cap and a curved arc tube.

[Prior Art] Conventionally, a curved arc tube was used, and the arc tube was housed in an envelope along with lighting circuit components such as a lighting tube and a capacitor, and a screw-in cap for an incandescent light bulb was attached. Fluorescent lamp devices have been developed.
This type of fluorescent lamp device is compact and compatible with incandescent bulbs, and consumes much less energy than incandescent bulbs.

In the above-mentioned fluorescent lamp device, lighting circuit components and the like are arranged in a limited and narrow space, so it may be necessary to devise ways of arranging and wiring each circuit component.

For example, in the prior art disclosed in Japanese Utility Model Application Publication No. 58-60810, circuit components such as a lighting tube are arranged on the arc tube side of the base (opposite side to the cover). Therefore, in this case, the lighting tube, the capacitor, its wiring, etc. may be visible from outside the glove, which is unfavorable in terms of appearance.

Therefore, it may be possible to accommodate the lighting tube and the capacitor on the back side of the base (on the base side). However, in this case, the end of the arc tube is located outside the board, so the four lead wires leading out from that end are routed from the arc tube side of the board, through the outer edge of the board, and inside the cover. There must be.
This complicates lead wire insulation and wiring processing.

In view of the above, the present inventors provided a cylindrical part into which the end of the arc tube is inserted into the base, and penetrated both ends of the cylindrical part, and inserted the end of the arc tube into the cylindrical part. At the same time, we considered guiding each lead wire coming out from the end of the arc tube to the inside of the cover from the open end on the base side of the cylindrical part. According to this structure, wiring of the lead wires can be performed relatively easily.

[Problem that the invention attempts to solve]

However, with the above method, it is difficult to maintain the insulation of the lead wires because two lead wires are drawn out in a naked state into a narrow space from the cylindrical portion of the base in the same direction. Furthermore, since the connection portions between these four lead wires and the lighting circuit components are not insulated and are exposed and close together in a narrow space, there is a possibility of a short circuit.

[Means for solving problems]

The fluorescent lamp device of the present invention includes an envelope equipped with a cover to which a cap is attached to one end, and an envelope that is bent so that both ends face the same side, and both ends of which are bent toward the cap. A base having curved arc tubes arranged side by side, a pair of cylindrical parts that divide the envelope into a base side and an arc tube side and into which both ends of the arc tubes are inserted; The present invention is applied to a fluorescent lamp device including a lighting circuit component housed on the cover side of the base.

In the fluorescent lamp device of the present invention, both ends of the cylindrical part are open, and one of the lead wires led out from each end face of the luminous tube is pulled out from the open end of the cylindrical part on the base side and is turned on. Wired to lighting circuit components such as light tubes or capacitors. The other lead wire is drawn out from the open end of the cylindrical part on the arc tube side to the outer surface of the base plate, and is guided to the cover side through the outer edge of the base plate and wired to the ballast, cap, etc. Ru.

[Effect]

In the fluorescent lamp device with the above configuration, a total of four lead wires led out from each end face of the luminous tube have a sufficient insulation distance from each other, so that the connection parts between the lead wires and the lighting circuit components are close to each other. This eliminates the possibility of short circuits. Both ends of the cylindrical part of the base of the present invention are open, and one lead wire (total of 2
The book) is led directly to the back side of the board from the open end on the base side of each cylindrical part and connected to the circuit components.
Lead wire processing is relatively simple.

〔Example〕

The fluorescent lamp device 1 shown in FIG. 1 includes a cover 2 made of metal. A through hole (not shown) is formed in the center of the cover 2, and the upper end 3a of the chassis 3 made of synthetic resin is inserted into this through hole.
is penetrated. The cover 2 is preferably made of a material that is lightweight and has good thermal conductivity, such as an aluminum alloy.

An electrically insulating ring 5 is inserted into the upper end 3a of the chassis 3, and a base 6 is screwed onto the ring 5. The cover 2 and ring 5 are
By screwing in the base 6, it is fixed to the chassis 3 at the same time. The cap 6 is a screw-in cap such as the E26 type used in well-known incandescent light bulbs.

Further, a glove 8 is placed on the lower surface side of the cover 2. The globe 8 is made of transparent synthetic resin or glass. Above cover 2 and glove 8
The envelope 10 is constructed by the following.

A metal ballast support plate 12 that also serves as a heat sink is provided on the lower surface side of the chassis 3. This stabilizer support plate 12 is formed from a single metal plate, and by bending a pair of claws 14 and 15 formed by cutting and raising a part of the plate inward,
It is fixed to the chassis 3.

The stabilizer support plate 12 is provided with a pair of rising portions 17 and 18 that protrude from the lower surface thereof.
A well-known chiyoke coil type ballast 20 is held between the rising portions 17 and 18. This stabilizer 20 is fixed to the upright portions 17 and 18 using welding, adhesive, or the like.

Further, a base 22 is provided below the stabilizer support plate 12. This base 22 partitions the envelope 10 into the base 6 side and the arc tube 30 side, and
It is a molded product made of heat-resistant white synthetic resin. This base 22 has electrical insulation properties. Also,
A pair of locking protrusions 23, 2 are provided on the peripheral edge of the base 22.
4 is provided. These locking protrusions 23, 2
4 are holes 25, 2 formed in the stabilizer support plate 12;
6 is fitted and supported.

Further, a part of the base 22 has a pair of cylindrical parts 2 into which both ends 30a and 30b of the arc tube 30 are inserted.
7 and 28 are formed. Each cylindrical part 27, 28
Both the upper and lower ends of are open.

The arc tube 30 is made by bending a straight glass bulb into a U shape and further bending it into a U shape so that the bent portion 30c of the U-shaped tube and both ends 30a and 30b of the tube face the same side. The bent portion 30c of the saddle-shaped tube is then formed into a saddle shape by forming the bent portion 30c of the saddle-shaped tube into both ends 30 of the tube.
It has a shape bent inward toward a and 30b. Therefore, it roughly forms a double inverted P shape. However, a saddle-shaped, U-shaped, or other curved arc tube may also be used.

The interior of the arc tube 30 is filled with mercury and a starting rare gas, similar to the arc tube of a general fluorescent lamp. Electrodes 32 and 33 are arranged at both ends 30a and 30b of the arc tube 30, respectively. Lead wires 35 and 36 are connected to one electrode 32, and lead wires 37 and 38 are connected to the other electrode 33.

The lead wire 35 is pulled out from the open end 27a of the cylindrical portion 27 on the base side and connected to the lighting tube 41 and the noise prevention capacitor 42. The other lead wire 36
is bent downward in the figure and drawn out of the base plate 22 from the open end 27b of the cylindrical portion 27 on the arc tube side. Furthermore, this lead wire 36 is introduced into the cover 2 side along the outer edge of the base 22 through a recess 44 formed in the edge of the base 22, and is connected to the stabilizer 20.

Still another lead wire 37 is pulled out from the opening end 28a of the cylindrical portion 28 on the base side and connected to the lighting tube 4.
1 and a capacitor 42. The other lead wire 38 is bent and drawn out of the base plate 22 from the open end 28b of the cylindrical portion 28 on the arc tube side. The lead wire 38 is introduced into the cover 2 side along the outer edge of the base plate 22 through the recess 44 and connected to the base 6. This lead wire 38 is coated with an insulating coating.

Note that the lighting tube 41 and the capacitor 42 are connected to the base 2.
It is inserted into bottomed holes 46 and 47 formed in 2. The holes 46 and 47 open on the back side (the base side) of the base 22.

In the fluorescent lamp device 1 having the above configuration, the base 6 is inserted into a commercial power socket, and the starting voltage is applied to the luminous tube 3.
By applying 0, the arc tube 30 lights up. During lighting, the lamp current is limited by the ballast 20.

The fluorescent lamp device 1 having the above configuration includes a lighting tube 41
Since the lighting circuit components such as the capacitor 42 and the like are arranged on the back side of the base (base side), they are not visible from the arc tube 30 side, and therefore have a good appearance.

Moreover, a pair of lead wires 35 and 36 lead out from one end 30a of the arc tube, and the other end 30
A pair of lead wires 37 and 38 led out from b are electrically completely separated from each other by the cylindrical portions 27 and 28. Furthermore, the lead wires 35, 3 directed upward
7 and downward lead wires 36 and 38,
Since the downward lead wires 36 and 38 pass through the outer surface of the base 22, a sufficient insulation distance from the lead wires 35 and 37 on the inner surface of the base 22 can be secured.

Therefore, it is possible to prevent a short circuit caused by the connection portions between the four lead wires 35 to 38 and the lighting circuit components 41 and 42 coming close to each other in a narrow space. The two lead wires 35 and 37 are directly guided inside the base 22 from the open ends 27a and 28a of the cylindrical parts 27 and 28, and are connected to the lighting tube 41 and the capacitor 42, so the lead wires Processing is relatively simple.

Note that the present invention can also be applied to a device in which the light emitting tube is lit in an exposed state without providing a globe.
Further, instead of the globe, a frame-shaped lamp guard may be used to protect the arc tube. Further, an electronic ballast may be used as the current limiting element.

[Effect of idea]

According to the present invention, in a single-capped fluorescent lamp device incorporating lighting circuit components, the insulation and wiring of the lead wire led out from the end of the arc tube can be performed reliably and easily.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a longitudinal sectional view of a fluorescent lamp device, Fig. 2 is an exploded perspective view of a part of the fluorescent lamp device, and Fig. 3 is a diagram showing the base and the end of the arc tube. FIG. 4 is a circuit diagram of the fluorescent lamp device. 1... Fluorescent lamp device, 2... Cover, 6...
...cap, 10...envelope, 22...base, 27,
28... Cylindrical part, 30... Arc tube, 30a, 30
b... Both ends, 35, 36, 37, 38... Lead wire, 41... Lighting tube (lighting circuit component), 42...
...Capacitor (lighting circuit component).

Claims (1)

[Claims for Utility Model Registration] An envelope equipped with a cover to which a cap is attached to one end, and an envelope that is bent so that both ends thereof face the same side, and which are placed side by side with both ends facing the said cap side. a curved arc tube, a base having a pair of cylindrical portions that divide the envelope into a cap side and an arc tube side, into which both ends of the arc tube are inserted; and this base. and a lighting circuit component housed on the cover side of the fluorescent lamp device, wherein each of the cylindrical portions is open at both ends, and one of a pair of lead wires led out from each end face of the arc tube. is drawn out from the open end of the cylindrical part on the base side and wired, and the other lead wire is drawn out from the open end of the cylindrical part on the arc tube side to the outer surface of the base and passed through the outer edge of the base. A fluorescent lamp device characterized in that the wiring is guided to the cover side.