JPS6344241B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fluorescent lamp device having a bulb-shaped base.

This type of fluorescent lamp device includes, for example, a curved tube fluorescent lamp that is approximately U-shaped or approximately saddle-shaped with three bent portions, together with a lighting circuit such as a ballast, and a chassis equipped with a bulb-shaped cap. The structure is such that it is integrally attached to the main body of the device.

By the way, in this type of device, the curved tube fluorescent lamp is fixed to the main body of the device, such as a chassis that has a bulb-shaped base, so if the fluorescent lamp is damaged for some reason or the fluorescent lamp reaches the end of its life, the fluorescent lamp will be removed. It is also necessary to replace the entire device. Therefore, even if a curved fluorescent lamp is damaged, it can be easily replaced and used again without having to discard the ballast and lighting circuit, which are relatively expensive and have a longer lifespan than fluorescent lamps. Development of devices that can do this is progressing.

An object of the invention is to provide a device that allows a fluorescent lamp to be replaced safely and easily without the risk of electric shock even when the fluorescent lamp device is inserted into a light bulb socket.

A first embodiment of the present invention will be described with reference to FIGS. 1 to 4. The device is divided into a lamp section and a chassis section. The lamp part is a fluorescent lamp made by bending a tube-shaped bulb into a substantially U-shape, and further bending both ends thereof into a substantially U-shape in a direction substantially perpendicular to a plane containing the above-mentioned U-shape, and forming the whole into a roughly saddle shape. The lamp 1 is housed in a substantially spherical globe portion 2, for example. The glove portion 2 includes a glove body 3 having a substantially spherical shape with a partially circular opening, and a base 4 having an opening in the center that fits into the glove body opening. The glove body 3 is made of, for example, polycarbonate resin, which is colored light-diffusing white by mixing a light-diffusing material into the resin. Glove body 3 and base 4 are glove body 3
It is removably fixed by a plurality of locking portions 5 provided on the edge of the opening and a plurality of locking protrusions 6 provided on the base 4 so as to fit therewith. Furthermore, a rib 7 and a support arm 8 for fixing the fluorescent lamp 1 are provided on the lamp side of the base 4, and four L-shaped lamp terminals 9 are provided on the opposite side. Terminal 9 is fluorescent lamp 1-4
They are electrically connected and conductive to the lead wires 10 of the book.

On the other hand, the chassis part has a power base 11 which is a bulb-shaped base at one end, an opening at the other end, a coil chain yoke 12 is attached to this opening, and a lighting tube 13, a capacitor 14 for noise prevention, and an internal switch are installed inside. 15, consists of a chassis body 17 having a chassis terminal 16 electrically connected to the switch.

When attaching the lamp part to the chassis body 17, the chassis terminal 16 is provided with a groove in which the lamp part terminal fits at the position of the chassis body 17 where the lamp part terminal 9 hits, so that the lamp part can be supported and fixed by further rotation. The L-shaped fitting groove 18 has a cross section formed on the back side of the fitting groove 18 (FIG. 3).

One of the fitting grooves 18 has a chassis main body 17.
There is a narrow space at the entrance into which a switch pin 19 for opening and closing the internal switch 15 is inserted.
The switch pin 19 is made of an insulating material, and has a pin terminal 20 for the internal switch 15 on its upper surface, and a pin receiving terminal 21 is attached to the chassis body 17 at a position where the pin terminal 20 abuts. The lower part of the switch pin 19 protrudes into the fitting groove 18, and when the globe terminal 9 is inserted, the switch pin 19 is pushed upward and the pin terminal 20 and pin receiving terminal 21 come into contact. In addition, the base 4 and chassis body 17
is molded from, for example, heat-resistant synthetic resin.

The electrical wiring of the fluorescent lamp device having the above structure is as shown in FIG.
The eyelet terminal 23 of the base 11 and the other chassis terminal 16b are further connected via the coil chain yoke 13. The remaining chassis terminals 16c and 16d are connected via a lighting tube 13, and a capacitor 14 is connected in parallel with the lighting tube 13. The two lead wires coming out from one electrode filament 24a of the fluorescent lamp 1 are connected to the lamp part terminals 9a, 9c, and the two lead wires coming out from the other electrode filament 24b are connected to the lamp part terminals 9b, 9d. It is connected to the.

Next, a second embodiment will be described with reference to FIGS. 5 and 6. The device is divided into a lamp part and a chassis part. As in the first embodiment, the lamp section has a structure in which a roughly saddle-shaped fluorescent lamp 1 is housed in a roughly spherical globe section 2. The globe portion 2 is composed of a globe body 3 which is approximately spherical and has a partially circular opening, and a base 4 which is attached to the circular opening and has a base socket 25 in the shape of a light bulb socket in the center. As in the first embodiment, this glove body 3 is made of, for example, polycarbonate resin, which is colored light-diffusing white by mixing a light-diffusing material into the resin. Further, the base 4 is molded using a heat-resistant synthetic resin. The base 4 and the glove body 3 are connected to a plurality of locking portions 5 provided at the opening edge of the glove body 3, and the base 4 is fitted with a plurality of locking portions 5 provided at the opening edge of the glove body 3.
It is removably fixed by a locking protrusion 6 provided at. Further, on the lamp side of the base 4, ribs 7 and support arms for fixing the fluorescent lamp 1 are provided. Thus, one lead wire each of the two-electrode filaments 24a and 24b of the fluorescent lamp 1 is electrically connected via the lighting tube 13, and the lighting tube 1
A capacitor 14 for noise prevention is connected in parallel with 3, and the other lead wires are connected to the base socket 2.
It is electrically connected to the screw terminal 26 and the contact piece terminal 27 of No. 5. The lighting tube 13 and the condenser 1
4 are both fixed to the base 4. The base-side contact surface with the chassis body 17 is a plate.

On the other hand, the chassis section is composed of a chassis main body 17, has a power source cap 11 which is a bulb-shaped cap at one end, has a chassis cap 28 which is a bulb-shaped cap screwed into the base socket 25 at the bottom end, and has a chassis main body 17 which is connected to the base 4. The side contact surface is flat, and two small openings 30a and 32a are provided in the plane thereof. Inside the chassis body 17, the stabilizer 12 is provided with micro switches 29 and 31 as internal switches. This micro switch 29, 31
is a switch that is ON only while pins 30 and 32 are pressed. The pins 30 and 32 are connected to the opening 30.
a, 32a and protrudes to the chassis side contact surface. When the ramp part is screwed onto the chassis and the two are completely connected, the contact surface on the base side should be aligned with pin 3.
0 is pressed, the micro switches 29, 31 are turned on, and when the lamp section is removed, the pins 30, 32 are returned and the micro switches 29, 31 are turned off.
The eyelet terminal 23 of the power base 11, the shell shell terminal 33 of the chassis base 28, the coil chain yoke 12, and the micro switch 31 are electrically connected to each other, and the shell 2 of the power base 11
2 and the chassis eyelet terminal 34 of the chassis base 28 are electrically connected via a micro switch 29.

In the second embodiment, the base socket 25, that is, the screw terminal 26 and the contact piece terminal 27 correspond to the lamp terminal 19 in the first embodiment, and the chassis cap 28, that is, the chassis shell 31, and the chassis eyelet terminal 32 correspond to the chassis terminal 16. Equivalent to.

In the above embodiments, the ballast is limited to a coil chain yoke, but a ballast circuit equipped with an inverter circuit or a high-frequency oscillation circuit may be used, and the fluorescent lamp is not limited to a roughly saddle shape, but a simple U-shape. It may also be a spiral bent pipe. Furthermore, an electronic starter may be used instead of the lighting tube. Further, in the first embodiment, the lighting tube may be attached to the globe part, and the number of chassis terminals and lamp part terminals may be two each.

In the fluorescent lamp device having the above configuration, in order to replace the lamp part, the globe part 2 can be rotated and pulled out. Moreover, at this time, the internal switch is turned on, so even if the chassis section is attached to the power socket, no secondary voltage is generated at the chassis terminal. Conversely, when attaching the lamp part to the chassis part, the lamp part is supported and fixed to the chassis part by performing the operation opposite to the above-mentioned procedure for removing the lamp part.
Moreover, at the same time, the chassis terminal and the lamp terminal are electrically connected, and the internal switch is also turned on, causing the fluorescent lamp to light up.

In the fluorescent lamp device of the present invention, when the fluorescent lamp is damaged, only the lamp section can be replaced, and the chassis section including the alternator can be used again as is. Moreover, even if this lamp replacement is carried out with the chassis section attached to the power socket, no secondary voltage is generated at the chassis terminals due to the operation of the internal switch, which increases work safety, especially , 300V when using an inverter circuit or high frequency oscillation circuit as a stabilizer circuit.
Therefore, the present invention, which normally requires the provision of a ground terminal, has the advantage of increasing safety because it is not necessary.

[Brief explanation of the drawing]

1 to 4 show a first embodiment of a fluorescent lamp device with a bulb-shaped base according to the present invention, in which FIG. 1 is a cross-sectional view, and FIGS.
A cross-sectional view taken along lines 1 and 2 is shown, and FIG. 4 is an electric circuit diagram thereof. 5 and 6 show a second embodiment, with FIG. 5 being a sectional view thereof, and FIG. 6 being an electrical circuit diagram thereof. 1... Fluorescent lamp, 2... Glove section, 3...
Glove body, 9... Lamp terminal, 11... Power supply base (bulb type base), 12... Coil chain yoke,
15... Internal switch, 16... Chassis terminal,
17... Chassis body, 25... Base socket (lamp terminal), 28... Chassis base (chassis terminal), 29, 31... Micro switch (internal switch).

Claims (1)

[Claims] 1. A chassis part having a ballast, an internal switch, a chassis terminal electrically connected to this switch, and a light bulb-shaped base, a lamp part terminal electrically connected to the chassis terminal of the chassis part, and an electrical terminal connected to the lamp part terminal. a curved fluorescent lamp that is connected to the lamp part, and a lamp part that is separably integrated into the chassis part, and the internal switch is turned off when the lamp part and the chassis part are separated. A light lamp with a bulb-shaped base, characterized in that a secondary voltage is not generated between the chassis terminals, and when the internal switch is turned on when coupled, a secondary voltage is generated between the chassis terminals. Device.