JPH0126093Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a discharge lamp ballast, and more particularly to the structure of a terminal plate attached to the ballast body.

[Technical background of the invention and its problems]

Conventionally, when attaching a fuse to a discharge lamp ballast, a fuse holder was used to attach it to the bottom cover of the ballast case. However, this structure requires a space to install the fuse holder, and since it is generally screwed, installation is time-consuming, requires more wiring, and the cost is high because the fuse holder is expensive.

Therefore, one possible method is to attach the fuse to a terminal board and screw this terminal board to the bottom cover of the ballast case, or to solder this terminal board to the capacitor terminal. If the fuse holder is fixed with screws, problems such as installation space, labor required for installation, and wiring cannot be solved, and if the fuse holder is soldered to the capacitor terminal, the types of wiring are limited. Therefore, there was a problem that only two or three types of ballast circuits could be implemented out of a large number of ballast circuits.

[Purpose of invention]

The present invention was devised in view of the above points, and provides a discharge lamp ballast equipped with a terminal board to which a fuse can be attached and which can be used in common with a large number of ballast circuits by standardizing the device. It is.

[Summary of the idea]

The discharge lamp ballast of the present invention consists of a ballast body and a terminal plate attached to the ballast body, and this terminal plate has a pair of power connection terminals formed on one side and a terminal plate formed on the other side. a pair of ballast connecting terminals, and a pair of holes formed between the respective power line connecting terminals and the ballast connecting terminals, one of which is connected to the one of the power source connecting terminals and the other is independent. and an intermediate terminal, and each of the power line connection terminals and the ballast connection terminal are connected by a fuse.

[Example of idea]

Next, one embodiment of the present invention will be explained based on FIGS. 1 to 5.

FIG. 1 is a diagram showing a discharge lamp ballast. In this figure, 1 is a case that has mounting portions 2 at both ends and is open at one end. A chiyoke coil 3 as a stabilizer body is housed in the other end of the case 1, and is embedded and fixed with an insulating synthetic resin 4. Also,
A capacitor 6 is housed in one end of the case 1 and is attached to a lid 5 that closes one end surface of the case 1. A terminal plate 7 is attached to the inner terminal side of the capacitor 6.

As shown in FIG. 2, this terminal board 7 has a pair of power line connecting terminals 9a, each having a round hole 8 on one side.
9b, and a pair of ballast connection terminals 12a, each having a round hole 10 and a square hole 11 on the other side.
12b is formed by a printed pattern.
Further, between each of the connection terminals 9a and 12a on one side, there is an intermediate terminal 14a connected to the ballast connection terminal 12a through the pattern connection part 13, and between each of the connection terminals 9b and 12b on the other side, there is an independent intermediate terminal 14a. Terminal 1
4b is formed by a printed pattern, and each of these intermediate terminals 14a, 14b is provided with a long hole 15 having a large diameter portion at one end into which a screw can be inserted. Furthermore, each connection terminal 9a of this terminal board 7,
There are fuses 16 and 16 between 9b, 12a and 12b.
are connected to each other.

As shown in FIGS. 3 and 4, this terminal board 7 is constructed by inserting the terminals 17, 17 of the capacitor 6 into the square holes 11 of the ballast connection terminals 12a, 12b, and then inserting the discharge resistor 18 into the terminals 17, 17. The terminals of the capacitor 6 are connected and fixed to the capacitor 6 by winding them and then soldering them.

In addition, the power line connection terminals 9a and 9b of the terminal board 7 are connected to an AC power source (not shown), and the ballast connection terminals 12a and 12b are connected to the power line coil 3 and the fifth
Lead wires 20 from the discharge lamp 19 shown in the figure are respectively connected.

Therefore, the electrical circuit of this discharge lamp ballast is as shown in FIG. In this figure, a is a circuit diagram, b is a connection diagram between the terminal plate 7 and other parts, and the discharge resistor 18 is omitted.

Next, the operation of this embodiment will be explained.

The procedure for installing the terminal board 7 is to first connect the fuses 16 between the connection terminals 9a, 9b, 12a, and 12b by soldering or the like, and then connect the terminal board 7 to the capacitor 6 electrically. and fix it. Next, the power line connection terminal 9a,
A lead wire 20 from the AC power source is connected to 9b, and a lead wire 20 from the chiyoke coil 3 and discharge lamp 19 is connected to the ballast connection terminals 12a and 12b.

Since the fuse 16 is attached to the terminal plate 7 in this way, a fuse holder is not required and the fuse 16 can be manufactured at low cost. Furthermore, the terminal plate 7 can be connected and fixed to the capacitor 6 with the fuse 16 attached in advance, making wiring easier.

In the above embodiment, a chiyoke coil type discharge lamp ballast has been described, but this terminal plate 7 can also be used for various other discharge lamp ballasts. This will be explained next.

First, when using the leakage transformer type discharge lamp ballast shown in Figure 6a, connect the power line connection terminals 9a and 9b of the terminal board 7 to the AC power source as shown in Figure 6b, and make each connection. Terminals 9a, 9b, 12
A fuse 16 is connected between a and 12b, and a capacitor 6 is connected between both ballast connection terminals 12a and 12b. And one ballast connection terminal 12a
is connected to one end of the primary winding 21a of the leakage transformer 21 and the discharge lamp 19, and the other end is connected to the primary winding 21a of the leakage transformer 21 and one end is connected to the discharge lamp 1.
It is connected to the connection point with the secondary winding 21b connected to the terminal 9.

Next, among the leakage transformer type discharge lamp ballasts shown in Figure 7a, especially in the case of a step-up type with a capacitor winding, connect the capacitor 6 between the intermediate terminals 14a and 14b as shown in Figure 7b. , the independent intermediate terminal 14b is connected to one end of the primary winding 22a of the leakage transformer 22. Also, one ballast connecting terminal 12a is connected to the connection point between the primary winding 22a and the secondary winding 22b whose one end is connected to the discharge lamp 19, and the other ballast connecting terminal 12b is connected to the primary winding 22b.
It is connected to the intermediate terminal of a and the discharge lamp 19.

Next, among the leakage transformer type discharge lamp ballasts shown in Figure 8a, especially in the case of a step-down type with a capacitor winding, connect the capacitor 6 between the intermediate terminals 14a and 14b as shown in Figure 8b. , the independent intermediate terminal 14b is connected to the intermediate terminal of the primary winding 23a of the leakage transformer 23 and the other end of the secondary winding 23b whose one end is connected to the discharge lamp 19. In addition, one ballast connection terminal 12a is connected to the primary winding 23.
One end of a is connected to the discharge lamp 19, and the other ballast connection terminal 12b is connected to the other end of the primary winding 23a.

Note that each of the above embodiments is of the slow phase type, but next, even with the same leakage transformer type discharge lamp ballast, the 9th
In the case of the phase advance type shown in the figure, a hole 24 is provided between one ballast connection terminal 12a and the intermediate terminal 14a to remove the pattern connection part 13 and make the intermediate terminal 14a independent, as shown in FIG. .

In this state, as shown in FIG. 9b, the capacitor 6 is connected between the intermediate terminals 14a and 14b. Also, one ballast connecting terminal 12a is connected to one end of the primary winding 25a of the leakage transformer 25 and also connected to the discharge lamp 19, and the other ballast connecting terminal 12b is connected to the primary winding 25a and the secondary winding. Connect to the connection point with 25b. Furthermore, one intermediate terminal 14
a is connected to one end of the secondary winding 25b, and the other intermediate terminal 14b is connected to the discharge lamp 19.

Next, a low power factor type discharge lamp ballast that does not use a capacitor will be explained. In this case, the intermediate terminal 14a is made independent as shown in FIG. 11 in the same manner as described above. In this state, one ballast connection terminal 12
a to the other end of the chiyoke coil 26 whose one end is connected to the discharge lamp 19, and the other ballast connection terminal 12.
b to the discharge lamp 19.

In this case, the terminal board 7 can be attached to the inside of the lid 5 of the case 1 with screws 27 inserted into the large diameter portions of the long holes 15 formed in the intermediate terminals 14a and 14b, or Also screw 2 inside
Fix at step 7.

In each of the above embodiments, the fuses 16, 16 are formed separately from the terminal plate 7, and a lead wire or the like is connected between the power line connection terminals 9a, 9b and the ballast connection terminals 12a, 12b, respectively. Although the configuration is such that the terminal board 7 is connected, as shown in FIG. 12, it may be formed integrally with the terminal board 7 using a printed pattern or the like, and when a large current flows through this patterned portion, it is fused to cut off the current.

In this way, the intermediate terminal 14a connected to the ballast connection terminal 12a can be made independent by the simple operation of providing the hole 24 in the terminal plate 7, and standard use can be achieved. In addition, the intermediate terminal 14
The long holes 15 formed in a and 14b are inserted into the terminal insertion holes of the capacitor 6 when the terminal plate 7 is attached to the capacitor 6, and into the screw insertion holes when the terminal plate 7 is directly attached to the case 1 with the screws 27. Can be used for both purposes.

[Effect of idea]

According to the present invention, it is possible to standardize the use of terminal boards,
Since mass production is possible, manufacturing costs can be reduced. Further, the intermediate terminal can also be used as a mounting part when the terminal board is mounted to an electrical component such as a capacitor or a case, and therefore the structure of the terminal board can be simplified. Furthermore, the terminal board can be attached to an electrical component such as a capacitor or a case with a fuse attached in advance, thereby facilitating wiring.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view showing an embodiment of the discharge lamp ballast of the present invention, FIG. 2 is a plan view of the same terminal board, and FIG. 3 is a plan view showing how the terminal board is installed. Figure 4 is a side view, Figure 5 is a diagram showing the ballast circuit, a is a circuit diagram, b is a connection diagram to the terminal board, and Figures 6 to 10 are diagrams showing other ballast circuits. In each case, a is a circuit diagram, b is a connection diagram to the terminal board, and FIGS. 11 and 12 are plan views of the terminal board showing other embodiments. 3, 26...Chiyoke coil as ballast main body, 7...Terminal plate, 9a, 9b...Power line connection terminal, 12a, 12b...Ballast connection terminal, 14
a, 14b...middle terminal, 15...long hole, 16...
...Fuses, 21, 22, 23, 25... Leakage transformer as the stabilizer body.

Claims (1)

[Scope of utility model registration request] It consists of a ballast body and a terminal plate attached to the ballast body, and this terminal plate has a pair of power line connection terminals formed on one side and a pair of ballast connection terminals formed on the other side. a terminal, and a pair of intermediate terminals with holes formed between the respective power line connection terminals and the ballast connection terminal, one of which is connected to the one of the power supply connection terminals and the other is independent; A discharge lamp ballast characterized in that each of the power line connection terminals and the ballast connection terminal are connected by a fuse.