JPH11273882A - Capacitor starter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obviate electric leakages, etc., from arising and enhance workability for wiring, in a lighting circuit which is exclusive to a capacitor starter. SOLUTION: In a capacitor starter 100 equipped with a capacitor 39 used for lighting a discharge lamp, a connection part 29 of a power supply wire 27 with a first lead wire 31, a connection part 37 of the capacitor 39 with a second lead wire 35, and the capacitor 39 are integrally housed in a housing body 41 made of resin, so as to impart an insulation effect. The housing body is formed of a main body and a lid body, both made of resin, the respective connection parts and the capacitor are housed in the main body, and the main body and the lid body are jointed integrally together by high-frequency welding.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a capacitor starter constituting a lighting circuit for lighting a discharge lamp such as a fluorescent lamp.

[0002]

2. Description of the Related Art Generally, in a showcase or the like, a fluorescent lamp for illuminating a product is mounted below a shelf of a display shelf. In this type of fluorescent lamp, a glow starter is usually used for lighting, but in recent years, a capacitor starter used in combination with an electronic ballast has been used. Regardless of whether the glow starter or the condenser starter is used, conventionally, a socket for a starter that is shared by both starters is required.In use, one of the starters is selected and mounted on this socket. To be used. However, in the conventional configuration in which the starter is mounted on the socket, not only is the contact failure between the starter and the socket liable to occur, but also when the starter is accidentally brought into contact with the starter when a product is loaded into a showcase or the like, the starter can cause the socket to fail. There are problems such as falling off from

On the other hand, in recent years, it has become necessary to increase the illuminance of a fluorescent lamp or to adjust the light for the purpose of improving the lighting effect in the showcase storage. Therefore, a glow starter is not used.
A lighting circuit dedicated to a capacitor starter using an inverter-type electronic ballast and a capacitor starter for filament preheating has been proposed.

[0004]

In the lighting circuit dedicated to the capacitor starter, the socket for the starter is not required, but the lead wire and the capacitor extending from the fluorescent lamp socket or the lead wire and the power supply line are caulked. Must be connected by

[0005] However, in the case of a showcase or the like, if the insulation of the connection portion is insufficient, problems such as electric leakage occur due to dew water generated during the cooling operation.

In addition, there is a problem that it is difficult to connect the connecting portions by caulking each time during installation of a showcase or the like and wiring work.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to solve the above-mentioned problems of the prior art, and to prevent the occurrence of electric leakage and the like in a lighting circuit dedicated to a capacitor starter, and to improve the wiring workability. To provide a starter.

[0008]

According to the first aspect of the present invention,
A first lead wire is connected to each of the pair of power supply wires, each of the first lead wires is connected to a pair of discharge lamp sockets, and second lead wires derived from the discharge lamp sockets are connected via a capacitor. In the capacitor starter connected by connecting the power supply line and the first lead wire,
A connection portion between the capacitor and the second lead wire and the capacitor are integrally housed in a housing.

According to the present invention, since each connecting portion and the capacitor are integrally housed in the housing, the insulation property is improved and the wiring workability is improved.

According to a second aspect of the present invention, in the first aspect, the housing is formed of a resin body and a lid, and each of the connection portions and the capacitor is housed in the main body. It is characterized by being integrally joined to the body by high frequency welding.

According to the present invention, since the main body and the lid are integrally joined by high-frequency welding, the production of the joined structure is facilitated and the production cost can be reduced.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a showcase. The showcase 1 is provided with a storage room 3, and a cool air passage 5 is provided below, behind, and above the storage room 3. A cooler blower 7 and a cooler 9 are provided in the cool air passage 5. During the cooling operation, as indicated by an arrow, the cool air in the storage room 3 is sucked into the cool air passage 5 through the suction port 11, is drawn into the blower 7 for the cooler, rises, is cooled by the cooler 9, and is cooled by the cooler 9. Storage room 3 descends from 13
And returns to the cool air passage 5 again through the suction port 11.
Reference numeral 15 denotes a heat insulating panel. The storage room 3 is provided with three display shelves 17, and a plurality of fluorescent lamps (discharge lamps) 21 are provided below the shelves of the display shelves 17. Between the storage room 3 and the cool air passage 5, a lower partition plate 19a, a back partition plate 19b,
An upper partition plate 19c is provided, and a plurality of power supply sockets 23 are provided on the back partition plate 19b. An inverter-type electronic ballast 25 is provided at the bottom of the showcase 1, and the electronic ballast 25 is connected to the power socket 23 through a plurality of lead wires (not shown). A power plug (not shown) connected to the fluorescent lamp 21 is inserted into the power socket 23.

A condenser starter 100 (FIG. 2) for turning on the fluorescent lamp 21 is provided near the fluorescent lamp 21. As shown in FIGS. 2 and 3, the capacitor starter 100 includes a housing 41 including a resin lid 43 and a main body 45. The housing 41 includes a resonance capacitor 39 and connection portions 29 and 37. And are housed with high insulation.

The wiring system will be described. In FIG. 2, reference numeral 27 denotes a pair of power supply lines for supplying power to the fluorescent lamp 21. The caulking terminal 27a of the power supply line 27 is connected to the caulking terminal 31a of the first lead wire 31 via the connection portion 29. The first lead wire 31 is not shown in the drawing, but is connected to the fluorescent lamp 21 (FIG. 1). It is connected to each of the fluorescent lamp sockets. A second lead wire 35 is led out of each of the fluorescent lamp sockets. A caulking terminal 39 a of the resonance capacitor 39 is connected to a caulking terminal 35 a of the second lead wire 35 via a connection portion 37.

The housing 41 is formed by the resin body 45 and the resin lid 43 as described above.
After the connection portions 29 and 37 and the capacitor 39 are housed in the main body 5, the main body 45 and the lid 43 are integrally joined by high-frequency welding to produce a pair of power supply wires 27, a pair of first lead wires 31, Each of the pair of second lead wires 35 is led out from the housing 41 in one direction.

In this embodiment, since the connecting portions 29 and 37 and the capacitor 39 are integrally housed in the housing 41, not only the insulation properties are improved and the wiring workability is improved, but also the main body 45 and the lid are connected. Since the body 43 and the body 43 are integrally joined by high-frequency welding, the production of this joint structure becomes easy, and the production cost can be reduced.

The housing 41 is provided with a hole 47 passing through the lid 43 and the main body 45, and the main body 45 is provided with a dowel 49 for preventing rotation.

As shown in FIG. 3, the storage body 41 includes, for example, a reinforcing plate 51 provided under a shelf of the display shelf 17 (FIG. 1).
Is attached to the fixing portion 51a. Dowel holes 53 and holes 55 corresponding to the dowels 49 and the holes 47 of the storage body 41 are formed in the fixing portion 51a.
After fitting into the dowel hole 53 of 1a, the bush 55 is pushed into the hole 47 of the housing 41 and the hole 55 of the fixing portion 51a, thereby fixing the housing 41 to the fixing portion 51a. As described above, by using the bush 55, the housing 41
Mounting work becomes easier.

In this embodiment, a lighting circuit dedicated to a so-called capacitor starter is provided unlike the conventional one. This eliminates the need for a common socket for the glow starter and capacitor starter, so that there is no poor connection between the socket and the starter, there is no dropout of the starter from the socket, and the contact reliability is lower than the conventional one. Can be significantly improved.

Further, since the connecting portions 29 and 37 are housed in the housing 41, disconnection and the like at the connecting portions 29 and 37 are prevented, and a waterproof structure is provided. Is prevented.

The present invention has been described based on one embodiment, but the present invention is not limited to this. For example, the connection at the connection portions 29 and 37 is not limited to caulking, and may be performed by soldering.

[0023]

According to the first aspect of the present invention, since each connection portion and the capacitor are integrally housed in the housing, the insulation property is improved and the wiring workability is improved.

According to the second aspect of the present invention, since the main body and the lid are integrally joined by high-frequency welding, the production of this joint structure is facilitated and the production cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing a structure of a showcase provided with a capacitor starter according to an embodiment of the present invention.

2A and 2B are diagrams showing a capacitor starter, wherein FIG. 2A is a plan view on the front side, and FIG. 2B is a plan view on the back side.

FIG. 3 is a cross-sectional view showing a mounted state of the capacitor starter of FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Fluorescent lamp (discharge lamp) 25 Electronic ballast 27 Power supply line 29, 37 Connection part 31 First lead wire 35 Second lead wire 39 Capacitor 41 Housing 100 Capacitor starter

Claims (2)

[Claims] 1. A first lead wire is connected to each of a pair of power supply wires, each of the first lead wires is connected to a pair of discharge lamp sockets, and a second lead wire led out from the discharge lamp sockets. In a capacitor starter in which the components are connected via a capacitor, a connection portion between the power supply line and the first lead wire, a connection portion between the capacitor and the second lead wire, and the capacitor are integrally housed in a housing. A capacitor starter characterized by: 2. The storage body is formed of a resin body and a lid body, the connection parts and the capacitor are housed in the main body, and the body and the lid body are integrally joined by high frequency welding. The capacitor starter according to claim 1, wherein: