JPS5816160Y2 - Ballast for discharge lamps - Google Patents

Description

[Detailed description of the invention] The present invention relates to a ballast for discharge lamps, and its purpose is to provide a discharge lamp ballast that requires less wiring and does not require a lighting fixture to cover the lead wires. There is something to do.

Conventionally, when lighting a fluorescent lamp, one set of ballast bodies B' was used exclusively for one fluorescent lamp 8, as shown in the first example.

Socket 12.1 in which the fluorescent lamp 8 is connected and mounted.
0 and the ballast main body B' must be connected using lead wires 11..., and the wiring work was complicated.

Furthermore, the length of the lead wire 11 must be longer than the length between the two poles of the fluorescent lamp 8, and since the wire connection is made across the two poles of the fluorescent lamp 80, there are disadvantages such as there were.

In addition, since the wires are connected between the two poles of the fluorescent lamp 8, the appearance is unsightly, and the ballast body B' must either be built into the lighting fixture or be installed in a place where the ballast body B' cannot be seen. There was a drawback that it took a lot of time to install.

Furthermore, as shown in Fig. 2, the ballast main body B' is divided into the current-limiting element (■) side and the power supply return section (■) side, and the - current-limiting elements (■) of the ballast main body B' are connected to the fluorescent light on one side. Insert in series with lamp 8,
Even when using a lighting method in which the power supply return section ■ is connected to the return side of another fluorescent lamp 8, it is necessary to specify the polarity of the power supply connection of the ballast body, which may cause incorrect wiring. There were drawbacks.

The present invention has been proposed in view of the above-mentioned points, and will be explained in detail below with reference to Examples.

B' is a ballast main body, in which a ballast element 5 consisting of a so-called leakage transformer is built into a rectangular parallelepiped case 1, and two sets of fluorescent lamp connection sockets 2 and 3 are arranged on the outer surface of the case 1. one of these sockets 2, 3 is electrically connected to the boost winding and the filament winding 6 of the ballast element 5, and the other 3 is electrically connected to the human power winding and the filament winding T of the ballast element 5. Furthermore, power terminals 4a, 4b'& are arranged on the top surface of the case 1 to connect these power terminals 4a, 4b'.
4b is connected to both ends of the primary winding of the ballast element 5.

Two sets of ballast bodies BB are arranged facing each other in accordance with the length between the poles of the fluorescent lamps 8, 8 to be connected, and a fluorescent lamp 8, 8 is placed between each of the facing sockets 2, 3. Connect and install.

FIG. 3 shows a circuit diagram when the fluorescent lamps 8, 8 are connected and installed, and one filament of each fluorescent lamp 8 is connected to the boost winding and the filament winding 6 of one ballast element 5.
and the other filament is connected to the other ballast element 5
It will be connected to the human power winding and filament winding 1 of .

Next, the power terminals 4a, 4b of each ballast body B' are connected to the power lines 9a, 9b.

In this case, the power supply terminal 4a connected to the ground side of the primary winding of each ballast element 5 is connected to the same power supply line 9a, and the other power supply terminal 4b is also connected to the same power supply line 9b to match the polarity. Let's do it.

Now, when an AC power source is connected between the power lines 9a and 9b, each fluorescent lamp 8 receives a lamp current through the current-limiting element (2) of one ballast element 5 to the power supply return section H of the other ballast element 5. will flow and turn on.

In the present invention, two sets of ballast bodies constructed as described above are disposed opposite each other, and a fluorescent lamp is connected and mounted on the same dirt floor with the socket provided on each ballast body. Two sets of filaments are preheated in separate ballast bodies, and one ballast element is separated into the current limiting element of one fluorescent lamp and the power supply return side of the other fluorescent lamp. Since the fluorescent lamps are installed between the facing sockets of the ballast bodies arranged opposite to each other, the lead wires connecting the fluorescent lamps and the ballast bodies are This eliminates the need for wiring connections, and since there is no need for lead wires, there is no need for lead wires to span both poles of the fluorescent lamp, resulting in an aesthetically pleasing appearance. A lighting circuit for two lamps can be configured by simply locating the two sets of ballast bodies, inserting the fluorescent lamps, and connecting the power wires, and furthermore, there is no need for lighting equipment to cover the lead wires. Therefore, the price as a lighting device is low, and when packaging, only the ballast body is packed, making the packaging extremely small and lightweight.Furthermore, the ballast body can be placed on both sides of the fluorescent lamp. Therefore, the thermal influence from the fluorescent lamp on the ballast body is small, and there is no need to control the temperature rise or noise of the ballast elements, making it easier to design and manufacture the ballast body.

Incidentally, by using the configuration of the present invention, a ballast for parallel multiple lamps can be easily obtained.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a conventional example in use, Fig. 2 is a principle circuit diagram of the present invention, Fig. 3 is a top view of an embodiment of the present invention, and Fig. 4 is a perspective view of a conventional example in use.
The figure is a circuit configuration diagram similar to the above, where 1 is a case, 2 and 3 are fluorescent lamp connection sockets, 4a and 4b are power supply terminals, and 5
is a leaky transformer type ballast element, 6 and 7 are filament windings, 8 is a fluorescent lamp, and B' is a ballast body.

Claims (1)

[Scope of utility model registration request] On the side of the case, a pair of sockets (Y) for connecting a fluorescent lamp are arranged in parallel, an input winding connected to an AC power supply, a boost winding connected to the input winding at one end, and a pair of filament windings. A leaky transformer-type ballast element with a ballast is built into the case, and one filament winding of the ballast element is connected to one fluorescent lamp connection socket, and the other filament winding is connected to the other fluorescent lamp connection socket. one end of the step-up winding is connected to the input winding, the other end of the step-up winding is connected to one of the fluorescent lamp connection sockets, and the other end of the input winding is connected to the step-up winding at one end. The ballast main body is constructed by providing first and second power terminals on the outside of the case, which are connected to the other fluorescent lamp connection socket and connected to one end and the other end of the manual winding of the ballast element, respectively. , a pair of ballast bodies are arranged facing each other so that a potential difference is created between the fluorescent lamp connection sockets 7771, which can be rotated in opposite directions. The first power supply terminal of each ballast body is connected to one power line of the AC power supply, and the second power supply terminal is connected to the other power supply line of the AC power supply. vessel.