JP2002313129A - Electronic ballast - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic ballast which is easy to replace as against a conventional copper or iron type ballast fitted to a luminaire and which enables energy-saving of an existing luminaire. SOLUTION: Fitting holes 12, 12' are fitted at either longitudinal end of a bottom plate 10a of a base 10 for fitting the base 10 to a luminaire, and the dimension D' (a fitting pitch) between the fitting holes 12, 12 or that E' between the fitting holes 12', 12' is to be of same dimension as that (a fitting pitch) between fitting holes of a copper or iron type ballast, an object for replacement.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic ballast for lighting a discharge lamp by an electronic circuit such as an inverter circuit.

[0002]

2. Description of the Related Art As a lighting device for lighting a discharge lamp such as a fluorescent lamp, an electronic circuit using an electronic circuit such as an inverter circuit in addition to a copper-iron type (magnetic circuit type) ballast using a choke or a leakage transformer. A ballast (an inverter circuit type ballast) is provided.

[0003] Copper-iron type ballasts are inferior to electronic ballasts in terms of efficiency, weight and the like, and recently, lighting fixtures employing electronic ballasts have been increasing.

By the way, the mounting pitch of the mounting holes provided in the copper-iron type ballast and the mounting pitch of the mounting holes provided in the electronic ballast have been set independently.

For example, as shown in FIG. 5, the external dimension of the copper-iron type ballast BL1 for two-light series lighting corresponding to a predetermined rated fluorescent lamp is such that the dimension a in the longitudinal direction (both ends direction) of the body 1 is 2 as shown in FIG.
00mm, dimension b in the short direction (width direction) is 61.5m
m, height dimension c is 43.5 mm, and mounting holes 2 and 2
The dimension (mounting pitch) d between them is 185 mm, and another mounting hole 2 'provided on both sides of the mounting hole 2;
An electronic ballast for serially lighting two lamps corresponding to the same predetermined rated fluorescent lamp, while the mounting pitch e by 2 'is 187 mm and the distance f between the mounting holes 2', 2 'on both sides is 28 mm. As shown in FIG. 6, a base A on which a circuit board on which an inverter circuit and the like are mounted is provided with a dimension A in the longitudinal direction (both ends) of 270 mm, a dimension B in the transverse direction (width direction) of 48 mm, and A cover 11 shown in FIG. 7 is attached to 10 to form a vessel, the height is 43.5 mm, and the dimension (mounting pitch) D between the mounting holes 12 is 260 mm. there were. The mounting pitch E of the odd-shaped mounting holes 12 ', 12' adjacent to both sides of each mounting hole 12 is 259 mm.
And the dimension F between the mounting holes 12 'on both sides is 3
It was 0 mm.

In the copper-iron type ballast BL1 shown in FIG. 5, two pairs of output terminals B1, B2, R connected to electrodes on one end of each of the fluorescent lamps L1, L2 as shown in FIG.
1 and R2, and a pair of output terminals Y1 and Y2 connected to electrodes on the other end of the fluorescent lamps L1 and L2 connected in series with each other and a pair of input terminals H connected to a power supply at the other end. ,
N, the electronic ballast BL2 has three pairs of output terminals B1, B at one end as shown in FIG. 8B.
2, R1, R2, Y1, Y2, and a pair of input terminals H, N at the other end.

That is, the electronic ballast BL2 has a narrow width direction,
Output terminals B1, B2,
The configuration in which R1, R2, Y1, Y2 and the input terminals H, N are separately disposed has been adopted.

FIG. 9A shows an output terminal B1, using a terminal device 13 incorporating a pair of quick-connecting terminals of the so-called finger pressure releasing type.
FIG. 9 shows a terminal arrangement state of the copper-iron type ballast BL which has B2, R1, R2, Y1, Y2 and input terminals H, N.
(B) shows output terminals B1, B in the electronic ballast BL2.
2 shows a terminal arrangement state on a circuit board 14 in which R1, R2, Y1, Y2 and input terminals H, N are configured using the terminal device 13.

[0009]

As described above, electronic ballasts have high efficiency and are excellent in energy saving. Therefore, electronic ballasts are often used for newly installed lighting fixtures. I have. On the other hand, it is considered that energy saving can be achieved by replacing an existing luminaire using a copper-iron ballast with a luminaire using an electronic ballast, but in this case, the existing luminaire is wasted. There was a problem.
The solution to this problem is to replace the existing copper-iron ballast with an electronic ballast and use the lighting equipment as it is, but as mentioned above, it is compatible with fluorescent lamps of the same rating. Even if the ballasts have different mounting pitches, they cannot be replaced as they are because they have different mounting pitches, and it is necessary to provide mounting holes corresponding to the mounting pitches of the electronic ballasts in the lighting equipment. Further, as described above, since the arrangement positions of the output terminals are different, there is a problem that the length of the wiring between the lamp socket and the output terminals must be changed.

Furthermore, if the existing copper-iron type ballast to be replaced has a height smaller than that of the electronic ballast, there is a problem that it becomes impossible to cover the luminaire after replacement.

The present invention has been made in view of the above problems, and can be easily replaced with an existing copper-iron type ballast attached to a lighting fixture. Another object of the present invention is to provide an electronic ballast capable of saving energy.

[0012]

In order to achieve the above object, according to the first aspect of the present invention, the copper iron ballast is provided so as to be able to replace an existing copper iron ballast attached to a lighting fixture. The mounting body is provided with mounting holes having the same mounting pitch as the mounting pitch of the mold ballast.

According to a second aspect of the present invention, in the first aspect of the present invention, the width dimension and the height dimension of the body are substantially the same as the width dimension and the height dimension of the copper-iron type ballast to be replaced. It is characterized by having.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the input and output terminals are provided at the same positions as the input and output terminals provided at both ends of the copper-iron type ballast to be replaced. Are provided, respectively.

According to a fourth aspect of the present invention, in the third aspect, the copper-iron type ballast to be replaced has two pairs of output terminals at one end, and a pair of output terminals and a pair of input terminals at the other end. A pair of output terminals arranged on the input terminal side, wherein the output terminal and the input terminal are respectively arranged at the same position corresponding to this arrangement. The output line is connected to one side of the body in parallel.

According to a fifth aspect of the present invention, in the third or fourth aspect, a quick connection type terminal device is used as the input terminal and the output terminal.

According to a sixth aspect of the present invention, in the first aspect of the present invention, when the discharge lamp of a predetermined standard to be lit by the copper-iron type ballast to be replaced is turned on, the copper-iron type ballast is turned on. The lighting output is set so that substantially the same light output as when the ballast is turned on is obtained.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to embodiments.

(Embodiment 1) This embodiment is an electronic ballast having the copper-iron type ballast BL1 shown in FIG. 5 as an object to be replaced, in which a base 10 shown in FIG. 1 and a cover 11 shown in FIG. A circuit board (not shown) mounted with a lighting circuit and a terminal device, which is formed of an electronic circuit such as an inverter circuit and obtains substantially the same light output (illuminance) as the replacement object, is housed inside the housing constructed as described above. It has become.

As shown in FIG. 1, the base 10 has a rectangular bottom plate 10a and side walls 10b, 10b rising from both side edges along the longitudinal direction of the bottom plate 10a. It is formed by bending a metal plate such as aluminum. Also, both side walls 1
Lock holes 10g into which lock protrusions 11d of the cover 11, which will be described later, are inserted and locked are provided in the vicinity of the leading edge at both ends in the longitudinal direction of 0b and 10b. Further, near both ends in the longitudinal direction of both side walls 10b, 10b of the base 10, supporting protrusions 10c for supporting the circuit board by floating from the bottom plate 10a, and contacting the four corners of the end of the circuit board with the longitudinal ends of the base 10, respectively. Four restricting protrusions 10d for restricting the movement of the circuit board in the direction are provided so as to be four each. At both ends in the longitudinal direction of the bottom plate 10a, a mounting hole 12 for mounting the base 10 to a lighting fixture and a mounting hole 12 'of an irregular shape are provided, and a dimension (mounting pitch) between the mounting holes 12, 12 is provided. Copper-iron type ballast B to be replaced with D '
Dimensions between mounting holes 2 and 2 of L1 (mounting pitch)
The same size as d, and a modified mounting hole 1
The mounting pitch E ′ by the 2 ′ and 12 ′ is also the same as the mounting pitch e ′ of the copper-iron type ballast BL1 to be replaced, and the dimension F ′ between the mounting holes 12 ′ and 12 ′ on both sides is also to be replaced. Is the same as the dimension f between the mounting holes 2 'and 2' of the copper-iron type ballast BL1 to be used, and the copper-iron type ballast BL1 is attached to the lighting fixture using either the mounting hole 2 or 2 '. Even if the ballast is mounted, the existing copper-iron ballast BL1 can be replaced with the electronic ballast of the present embodiment without newly drilling a mounting hole in the lighting fixture.

On the other hand, the cover 11 is made of a TM material such as iron, and has a rectangular plate-shaped main piece 11a whose longitudinal dimension is shorter than the bottom plate 10a of the base 10 as shown in FIG.
The side pieces 11b, 11b each having a substantially rectangular cross section extending from both side edges along the longitudinal direction of a, and extending from both end edges of the main piece 11a facing in the longitudinal direction to the same side as the side piece 11b. The side plates 11c, 11c are integrally formed. In the vicinity of the distal end edge of each of the side pieces 11b, 11b in the longitudinal direction, a locking projection 11d that is inserted and locked into a locking hole 10g provided in the side wall 10b of the base 10 is formed to protrude inward. The end of the side plates 11c, 11c is extended to the vicinity of the bottom plate 10a of the base 10, and a plurality of (two in this embodiment) bent portions 11e, 11f are provided. Has been expanded. Further, rectangular openings 11g, 11g are formed in each of the side plates 11c, 11c so that a terminal device constituting an input terminal for connecting a power supply and an output terminal for connecting to a lamp socket is exposed to the outside. The main piece 11
A, a large number of through holes 11h are arranged in the side piece 11b and the side plate 11c to radiate heat in the base 10.

The electronic ballast is completed by disposing the circuit board on the base 10 and attaching the cover 11 to the opening of the base 10.

Here, the dimension from the lower end to the upper end of the cover 11 is the height dimension C 'of the body of the electronic ballast of the present embodiment, and the dimension between the outer surfaces of both side pieces 11b, 11b is the electronic dimension of the present embodiment. The width dimension B ′ of the ballast body is the height dimension c of the copper-iron type ballast BL1 to be replaced.
And the width dimension b is substantially the same (same).

Accordingly, the electronic ballast of the present embodiment has the same mounting pitch as that of the existing copper-type ballast BL1 mounted on the lighting equipment, and therefore the existing copper-type ballast BL1
1 can be mounted using the mounting hole of the lighting fixture as it is, and the height dimension C 'and the width dimension B' of the body are also the height dimension c and the width dimension of the copper-type ballast BL1. Since the dimensions are substantially the same (same as) b, there is no fear that the cover of the lighting fixture cannot be covered after replacement.

(Embodiment 2) When the electronic ballast of Embodiment 1 is replaced with an existing copper-iron type ballast BL1 attached to a lighting fixture, a new mounting hole is not formed in the lighting fixture. Although the configuration is such that it can be attached, in the present embodiment, in addition to the configuration of the first embodiment, the wiring in the existing lighting fixture can be used as it is.

In other words, in the conventional elongated electronic ballast, an output terminal is provided on one end and an input terminal is provided on the other end for noise suppression. By using a body having the same width dimension as the vessel BL1, there is room in the body. Therefore, the circuit board 14 obtained by using a wide circuit board 14 corresponding to the width of the body is used. FIG. 3 shows a pattern 15 of an output path of an inverter circuit connected to electrodes of two fluorescent lamps connected in series with each other in the circuit for two-lamp serial lighting shown in FIG. The output terminals Y1 and Y2 connected to the output of the inverter circuit via the pattern 15 can be provided on the side where the input terminals H and N are provided.

Specifically, a copper-iron type ballast B to be replaced
The terminal device 13 is arranged on the circuit board 14 as shown in FIG. 3 so as to be at the same position as each terminal device 13 provided as shown in FIG. Similarly, a pair of quick connection terminals of the terminal device 13 at the same positions as the terminal devices 13 constituting the terminals B1, B2, R1, R2, Y1, Y2 are output terminals B1, B2, R1, R2, Y1, Y2.
And the input terminals H and N of the copper-iron type ballast BL1.
Are similarly set as input terminals H and N. 1
Reference numeral 6 denotes mounting screw insertion holes provided at both ends of the circuit board 14.

Thus, the electronic ballast BL of this embodiment is
When replacing with the existing copper-iron type ballast BL1, the existing wiring of the lighting fixture, that is, the connection lead wire can be used as it is, and as a result, the length adjustment of the lead wire becomes unnecessary. Needless to say, similarly to the first embodiment, there is no need to newly drill a mounting hole in the lighting fixture.

Here, when the lead wire is inserted into the wire insertion hole (not shown), the quick-connecting terminal of the terminal device 13 locks the core of the lead wire, and a release button (not shown) with a finger. Is pressed, the locked state is released and the lead wire can be removed to form a so-called finger pressure release type quick connection terminal, which facilitates the connection work when replacing with the copper-iron type ballast BL1. ing. Of course, since the similar terminal device 13 is used also on the copper-iron type ballast BL1, the lead wire can be easily removed from the copper-iron type ballast BL1.

(Third Embodiment) In the second embodiment, the output line connected to the output terminals Y1 and Y2 on the other end is connected to the circuit board 1
4, the output terminals of the inverter circuit mounted on the circuit board 14 using the twisted pair wires 17 as shown in FIG. It is designed to connect between

Also in this embodiment, when replacing the existing copper-iron type ballast BL1 as in the second embodiment, the existing wiring of the lighting fixture, that is, the connection lead wire can be used as it is, and the resultant lead is used. No line length adjustment is required. Needless to say, similarly to the first embodiment, there is no need to newly drill a mounting hole in the lighting fixture.

Note that two parallel wires may be used instead of the twisted pair wire 17.

[0033]

According to the first aspect of the present invention, the mounting pitch is the same as the mounting pitch of the copper-type ballast so that it can replace the existing copper-type ballast mounted on the lighting equipment. Since the holes are provided in the body, when replacing the existing copper-iron type ballast, the mounting holes used by the existing copper-iron type ballast can be used as they are. No need to drill mounting holes,
As a result, it can be easily replaced with an existing copper-iron type ballast, and there is an effect that energy can be saved at a low cost without replacing a lighting fixture.

According to a second aspect of the present invention, in the first aspect of the present invention, the width dimension and the height dimension of the vessel are substantially the same as the width dimension and the height dimension of the vessel of the copper-iron type ballast to be replaced. Therefore, in addition to the effect of the first aspect of the present invention, there is an effect that a trouble that the cover of the lighting fixture does not cover after replacement with the copper-iron type ballast does not occur.

According to a third aspect of the present invention, in the first or second aspect, the input and output terminals are provided at the same positions as the input and output terminals provided at both ends of the copper-iron type ballast to be replaced. Since the lead wires used for connecting the copper-iron type ballast can be used as they are, it is not necessary to adjust the length of the lead wires. This facilitates replacement work.

According to a fourth aspect of the present invention, in the third aspect, the copper-iron type ballast to be replaced has two pairs of output terminals at one end and a pair of output terminals and a pair of input terminals at the other end. A pair of output terminals arranged on the input terminal side, wherein the output terminal and the input terminal are respectively arranged at the same position corresponding to this arrangement. Since the output line connected to the electronic ballast is wired so as to be parallel to one side of the inside of the housing, there is no problem regarding noise, and an electronic ballast having the effect of claim 3 can be realized.

According to a fifth aspect of the present invention, in the third or fourth aspect of the present invention, as the input terminal and the output terminal, a quick connection type terminal device capable of releasing the locked state of the electric wire by pressing a finger is used. There is an effect that workability when replacing the copper-iron type ballast is further facilitated.

According to a sixth aspect of the present invention, in the first aspect of the present invention, when the discharge lamp of a predetermined standard that is lit by the copper iron type ballast to be replaced is turned on, the copper iron type ballast is turned on. Since the lighting output is set so as to obtain substantially the same light output as when the ballast is turned on, in addition to the effects of the invention according to any one of claims 1 to 5, even if the ballast is replaced with a copper-type ballast. The same illuminance as before can be obtained, and there is an effect that a sense of incongruity does not occur.

[Brief description of the drawings]

FIG. 1A is a top view of a base used in a first embodiment of the present invention. (B) is a front view of the base used in the above. (C) is a side view of the base used in the above.

FIG. 2A is a top view of a cover used in the embodiment.
(B) is a front view of the cover used in the same. (C) is a side view of the cover used in the above. (D) is another side view of the cover used for the same as the above.

FIG. 3 is a schematic top view showing an arrangement of terminal devices on a circuit board used in Embodiment 2 of the present invention.

FIG. 4 is a schematic top view showing the arrangement of terminal devices on a circuit board used in Embodiment 3 of the present invention.

FIG. 5A is a top view of an example of an existing copper-iron type ballast. (B) is a front view of the same. (C) is a side view of the same.

FIG. 6A is a top view of a base used in a conventional electronic ballast without considering replacement with an existing copper-iron type ballast.
(B) is a front view of the base used in the above. (C) is a side view of the base used in the above.

FIG. 7A is a top view of a cover used in the embodiment.
(B) is a front view of the cover used in the same. (C) is a side view of the cover used in the above.

FIG. 8A is a wiring diagram when the copper-iron type ballast of FIG. 6 is used. (B) is a wiring diagram when the electronic ballast of FIG. 7 is used.

FIG. 9A is an explanatory view of an arrangement state of terminal devices in the copper-iron type ballast of FIG. 6; FIG. 8B is an explanatory diagram of an arrangement state of terminal devices in the electronic ballast of FIG. 7.

[Explanation of symbols]

 10 Cover 12, 12 'Mounting hole D', E 'Mounting pitch

Continued on the front page (72) Inventor Yoshimitsu Hiramane 1048 Kazuma Kadoma, Kadoma-shi, Osaka Matsushita Electric Works Co., Ltd. F-term (reference) 3K014 EA04

Claims (6)

[Claims] 1. A mounting hole having the same mounting pitch as the mounting pitch of the copper-type ballast is provided on the body so as to be able to replace an existing copper-type ballast mounted on a lighting fixture. An electronic ballast characterized in that: 2. The copper ballast of claim 1, wherein the width and height of said body are substantially the same as the width and height of the body of said copper-iron type ballast to be replaced. Electronic ballast. 3. An input / output terminal provided at both ends of the copper-iron type ballast to be replaced, the input / output terminal being provided at the same position as the input / output terminal is provided. 2. The electronic ballast according to 2. 4. The copper-iron type ballast to be replaced has two pairs of output terminals at one end, and a pair of output terminals and a pair of input terminals at the other end, and connects two discharge lamps in series. Output terminals and input terminals are respectively arranged at the same position corresponding to this arrangement, and an output line connected to a pair of output terminals arranged on the input terminal side is parallel to one side in the body. 4. The electronic ballast according to claim 3, wherein the electronic ballast is wired. 5. The electronic ballast according to claim 3, wherein a quick connection type terminal device is used as the input terminal and the output terminal. 6. Lighting such that substantially the same light output as when the copper-iron type ballast is turned on is obtained when a discharge lamp of a predetermined standard which is turned on by the copper-iron type ballast to be replaced is turned on. The electronic ballast according to claim 1, wherein an output is set.