JP2002110440A - Electromagnetic equipment, discharge-lamp operating device, and luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide electromagnetic equipment 11 which can be improved in assembling workability after the water proofing and the tensile strengths of lead wires 13 are secured. SOLUTION: The main body 12 of the electromagnetic equipment 11 is housed in a case 15 through the opening 42 of the case 15 and, at the same time, the lead wires 13 are led out from the case 15 through the opening 42. A first filler 16 which surrounds the main body 12 is packed in the case 15, and, at the same time, a second filler 17 which is softer than the first filler 16 is packed in the case 15 on the opening 42 side of the filler 16. About a half of a lead wire holding body 14 which holds the lead wires 13 is buried in the first filler 16 and the remaining half of the body 14 is buried in the second filler 17. Therefore, the assembling workability of the equipment 11 can be improved after the water proofing of the equipment 11 and the tensile strengths of the lead wires 13 are secured by fixing the lead wire holding body 14 to the first filler 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic device, a discharge lamp lighting device, and a lighting fixture in which an electromagnetic device main body is housed in a case and filled with a filler.

[0002]

2. Description of the Related Art Conventionally, for example, as shown in FIGS. 7 and 8, an electromagnetic device used for a discharge lamp lighting device or the like is composed of a coil bobbin around which a coil is wound and an iron core, and an electromagnetic device body 1 is constituted. Then, the electromagnetic device main body 1 is housed through the opening 3 at one end of the cylindrical case 2, and the lead wire 4 connected to the electromagnetic device main body 1 closes the opposite side of the case 2 from the opening 3. The case 2 is drawn out from the lead wire holder 6 attached to the hole 5a, and the case 2 is filled with the first filler 7 surrounding the electromagnetic device body 1 and the first filler 7 in the case 2 A second filler 8 for improving waterproofness is filled in the opening 3 side from 7.

When assembling the electromagnetic device body 1, the lead wire holder 6 is attached to the end plate 5 of the case 2, the lead wire 4 is passed through the lead wire holder 6, and the lead wire 4
Is soldered to the electromagnetic device main body 1, the electromagnetic device main body 1 is housed in the case 2 while the lead wire 4 is pulled out of the case 2 through the lead wire holding member 6, and the first filler 7 is filled and cured, The second filler 8 is filled and cured.

[0004]

However, in the conventional electromagnetic device, the operation of attaching the lead wire holder 6 to the end plate 5 of the case 2 and the operation of attaching the lead wire 4 to the lead wire holder 6 attached to the case 2 are performed. Work to connect the lead wire 4 to the electromagnetic device body 1 while passing through the case 2,
It is necessary to store the electromagnetic device main body 1 in the case 2 while pulling the lead wire 4 out of the case 2 through the lead wire holding member 6, and there is a problem that the operation is complicated and time-consuming.

The present invention has been made in view of the above points, and provides an electromagnetic device, a discharge lamp lighting device, and a lighting device which can improve the assembling workability while ensuring waterproof performance and tensile strength of a lead wire. The purpose is to do.

[0006]

According to the first aspect of the present invention, there is provided an electromagnetic device having an electromagnetic device main body to which a lead wire is connected; and an opening, wherein the electromagnetic device main body is housed and the lead wire is drawn out from the opening portion. A first filler which is filled in the case and surrounds the electromagnetic device main body; a second filler which is softer than the first filler and is filled on the opening side with respect to the first filler in the case. And a lead holding body that holds the lead wire and is at least partially embedded in the first filling material;
Is provided.

[0007] Then, the electromagnetic device main body is housed from the opening of the case and the lead wire is drawn out, and the case is filled with a first filler surrounding the electromagnetic device main body. The opening is filled with a second filler that is softer than the first filler, and at this time, at least a part of the lead wire holding body that holds the lead wire is embedded in the first filler. The holding body is fixed to the first filler, and the waterproofing performance and the tensile strength of the lead wire are ensured, and the assembling workability is improved.

According to a second aspect of the present invention, there is provided an electromagnetic device according to the first aspect, wherein a portion of the lead wire holder other than the portion embedded in the first filler is embedded in the second filler. is there.

Then, by embedding the portion of the lead wire holder other than the portion embedded in the first filler in the second filler, the waterproofness is improved.

According to a third aspect of the present invention, there is provided the electromagnetic device according to the first or second aspect, wherein a lead is provided on an outer surface of a portion of the lead wire holder embedded in the first filling material with respect to the first filling material. A retaining portion for preventing the wire from coming off in the drawing direction is formed.

[0011] By forming a retaining portion on the outer surface of the portion of the lead wire holding member embedded in the first filler to prevent the first filler from coming off in the lead-out direction of the lead wire, Improve tensile strength of lead wire.

According to a fourth aspect of the present invention, there is provided the electromagnetic device according to any one of the first to third aspects, wherein the case has a cylindrical case body having an opening at one end and the other end of the case body closed. An end plate is provided, and a cushioning material is interposed between the end plate of the case and the electromagnetic device body accommodated in the case.

Since the cushioning member is interposed between the end plate of the case and the electromagnetic device main body accommodated in the case, when the electromagnetic device main body is accommodated in the case, the heavy electromagnetic device main body collides. Thus, the impact of the impact on the end plate of the case is reduced, the closed state of the end plate with respect to the case body is maintained, and leakage of the first filler can be prevented.

According to a fifth aspect of the present invention, there is provided a discharge lamp lighting device including the electromagnetic device according to any one of the first to fourth aspects.

The provision of the electromagnetic device according to any one of claims 1 to 3 makes it possible to ensure waterproof performance and tensile strength of the lead wire.

According to a sixth aspect of the present invention, there is provided a lighting fixture comprising: the discharge lamp lighting device according to the fifth aspect; and a fixture main body to which a discharge lamp to be lighted by the discharge lamp lighting device is mounted.

Further, by providing the discharge lamp lighting device according to the fourth aspect, the lead wire is securely held by the lead wire holding body for the wiring process of the lead wire, and the waterproof performance can be maintained.

[0018]

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

1 to 4 show a first embodiment. FIG. 1 is a sectional view of an electromagnetic device, FIG. 2 is a sectional view of an electromagnetic device, and FIG. 3 is a lighting device using the electromagnetic device in a discharge lamp lighting device. FIG. 4 is a circuit diagram of a discharge lamp lighting device.

1 and 2, reference numeral 11 denotes an electromagnetic device. The electromagnetic device 11 includes an electromagnetic device main body 12 such as a transformer and a choke coil, a plurality of lead wires 13 connected to the electromagnetic device main body 12, and these lead wires. A lead wire holding body 14 for holding 13, a case 15 for housing the electromagnetic device main body 12, and a first filler 16 and a second filler filled in the case 15
17 and so on.

The electromagnetic device body 12 includes a coil 21 and this coil
Coil bobbin made of synthetic resin with insulating properties wound 21
22, has an iron core 23 combined with the coil bobbin 22. At both ends of the coil bobbin 22, a plurality of terminal blocks 24 are formed so as to protrude. A plurality of terminals 25 are arranged in parallel on the terminal block 24 at one end, and a lead wire of the coil 21 is connected to each of the terminals 25.

As the lead wire 13, a covered electric wire in which a core wire 27 is covered with an insulator 28 is used, and one end of the core wire 27 is electrically and mechanically connected to a terminal 25 by soldering.

The lead wire holder 14 is formed of a material such as rubber, for example, and has a plurality of insertion holes 31 through which the respective lead wires 13 pass from one end face to the other end face. On the outer peripheral surface between both end surfaces of the lead wire holder 14, a protruding portion 32 on one end side, a protruding portion 33 on the other end side, and a concave annular stopper portion 34 are formed between the protruding portions 32, 33. . A substantially half area including the projecting portion 33, the retaining portion 34, and a part of the projecting portion 32 of the lead wire holder 14 is a first embedding region 35 in the first filler 16.
The remaining protruding portion 32 is a second embedding region 36 in the second filler 17. The protrusions 32 and 33 are
It is formed in a tapered shape so that the outer end side is tapered from the inner end side on the 34 side.

The case 15 has a cylindrical case body 41,
An opening 42 is formed at one end of the case body 41, and an end plate 43 is provided at the other end in a sealed state by welding or the like.

As the first filler 16, for example, a thermosetting resin in a solution state at room temperature such as a compound is used. The thermosetting resin in the solution state is injected into the case 15 and surrounds the electromagnetic device body 12. After filling, heat is applied to cure.

The second filler 17 is made of a material that is softer and more waterproof than the first filler 16, such as silicone resin, and is closer to the opening 42 than the first filler 16 in the case 15. Is filled and cured.

A sheet-like insulating material 45 is disposed between the surface of the electromagnetic device main body 12 on the terminal block 24 side and the inner surface of the case 15.

Then, in order to assemble the electromagnetic device 11, each lead wire 13 is connected to each terminal 25 of the electromagnetic device main body 12 by soldering, and each lead wire 13 is passed through the lead wire holder 14. In addition,
After passing the lead wire 13 through the lead wire holding body 14, the lead wire
13 may be connected to each terminal 25 by soldering.

The electromagnetic device main body 12 and the lead wire holder 14 are housed through the opening 42 of the case 15, and the respective lead wires 13 held by the lead wire holder 14 are pulled out from the opening 42.

The first filler 16 in a solution state is injected with the opening 42 of the case 15 facing upward, and the space between the case 15 and the electromagnetic device main body 12 is filled. Filling is performed until approximately half of the wire holder 14 including the retaining portion 34 is buried. Then, heat is applied to cure the first filler 16.

After the hardening of the first filler 16, the second filler 17
And filling until the lead wire holder 14 is completely buried. Then, the assembly of the electromagnetic device 11 is completed by applying heat to cure the second filler 17.

As described above, when assembling the electromagnetic device 11, the electromagnetic device main body 12 is housed through the opening 42 of the case 15 and the lead wire 13 is pulled out, and the first filling that surrounds the electromagnetic device main body 12 in the case 15 is performed. While filling the material 16,
The opening 42 side of the first filler 16 in the case 15 is filled with a second filler 17 that is softer than the first filler 16,
Approximately half of the lead wire holder 14 holding the middle of the lead wire 13 is embedded in the first filler 16 and the lead wire holder
The lead wire holder 14 can be fixed to the first filler 16 and the tensile strength of the lead wire 13 can be ensured only by embedding the portion other than the portion of the lead 14 embedded in the first filler 16 in the second filler 17. At the same time, the second filler 17 can ensure waterproof performance. Therefore, it is not necessary to perform a complicated and laborious operation as in the related art, and the waterproof performance and the tensile strength of the lead wire 13 can be ensured, and the assembling workability can be improved.

For example, even when the electromagnetic device 11 is suspended by holding the lead wire 13, the lead wire holding member
Since it is fixed to 16, it is possible to prevent a force from being applied to the soldering portion between the lead wire 13 and the terminal 25 and the second filler 17, and to prevent the connection failure between the lead wire 13 and the terminal 25 and the second Focus on
17 can prevent a decrease in waterproofness.

Further, the first filler of the lead wire holder 14
Since the retaining portion 34 is formed on the outer surface of the portion embedded in the lead 16 to prevent the first filler 16 from coming off in the lead-out direction of the lead wire 13, the tensile strength of the lead wire 13 can be further improved.

As shown in FIG. 3, the electromagnetic device 11 can be used as a component of a discharge lamp lighting device 52 used for a lighting device 51. This lighting fixture 51 is a single lamp type, has a fixture main body 53 having an inverted Fuji-shaped reflector, and a discharge lamp lighting device 52 is arranged in the fixture main body 53,
A straight fluorescent lamp 54 as a discharge lamp at both ends of the appliance body 53
Are connected to each other. As shown in FIG. 4, a power source E is connected to filaments at both ends of a straight tube fluorescent lamp 54 via a discharge lamp lighting device 52, and a glow lamp G for starting is connected to the filaments at both ends. I have.

By using the electromagnetic device 11 for the discharge lamp lighting device 52, waterproof performance and tensile strength of the lead wire can be ensured, and reliability can be maintained.

Further, by using the discharge lamp lighting device 52 for the lighting equipment 51, the lead wire 13 is securely held by the lead wire holder 14 for the wiring process of the lead wire 13, thereby preventing poor connection. Waterproof performance can be maintained.

It should be noted that the retaining portion 34 is not limited to the concave shape, but may be a convex shape, or if both the concave shape and the convex shape are provided, the tensile strength of the lead wire 13 can be improved.

Next, FIGS. 5 and 6 show a second embodiment, and FIGS. 5 and 6 are cross-sectional views of an electromagnetic device.

Between the end face of the iron core 23 of the electromagnetic device main body 12 housed in the case 15 and the end plate 43 of the case 15, a cushioning material 61 having a buffering action such as rubber is interposed. The cushioning material 61 is formed in a substantially hemispherical shape, and is a flat mounting surface that is attached to the inner surface of the end plate 43 with an adhesive or a double-sided adhesive tape.
It has 62.

When assembling the electromagnetic device 11, the case 15
The cushioning material 61 is attached to the inner surface of the end plate 43 in advance, and the electromagnetic device body 12 is stored in the case 15. At this time, if the cushioning material 61 is not provided, for example, when the electromagnetic device main body 12 is dropped into the case 15 with the opening 42 of the case 15 facing upward, the case has the coil 21 and the iron core 23 and is heavy. Although the electromagnetic device main body 12 collides with the end plate 43 and the impact of the collision breaks the seal between the end plate 43 and the case main body 41, there is a possibility that the leakage occurs when the first filler 16 is injected. By providing the cushioning material 61, the shock when the electromagnetic device main body 12 collides with the end plate 43 can be buffered, and the sealing between the end plate 43 and the case main body 41 can be prevented from being broken. Of the filler 16 can be prevented.

Further, by providing the cushioning member 61, an insulation distance between the electromagnetic device main body 12 and the end plate 43 of the case 15 can be ensured.

If the shape of the cushioning material 61 is spherical,
It is not necessary to stick to the end plate 43, and if it is formed in the same shape as the cross-sectional shape of the case 15, it comes into close contact with the inner surface of the case 15,
Even if the seal between the end plate 43 and the case body 41 is broken, the leakage of the first filler 16 can be reliably prevented. Further, the cushioning member 61 is not limited to an elastic body such as rubber, and a similar effect can be obtained by using a spring or the like.

[0044]

According to the first aspect of the present invention, the electromagnetic device main body is housed from the opening of the case and the lead wire is drawn out, and the first device surrounding the electromagnetic device main body in the case is provided.
And a second filler softer than the first filler in the opening side of the first filler in the case, and holding a lead wire at that time. Is embedded in the first filler, so that the lead wire holding member can be fixed to the first filler, and waterproof performance and tensile strength of the lead wire can be ensured, and assembling workability can be improved.

According to the electromagnetic device of the second aspect, in addition to the effect of the electromagnetic device of the first aspect, the portion other than the portion of the lead wire holder embedded in the first filler is added to the second filler. Since it is embedded, the waterproofness can be improved.

According to the electromagnetic device of the third aspect, in addition to the effect of the electromagnetic device of the first or second aspect, the first surface of the lead wire holder embedded in the first filler is provided with the first surface.
Since the retaining portion for preventing the filler from coming off in the lead-out direction of the filler is formed, the tensile strength of the lead can be improved.

According to the electromagnetic device of the fourth aspect, in addition to the effects of the electromagnetic device of any one of the first to third aspects,
Since a cushioning material was interposed between the end plate of the case and the main body of the electromagnetic equipment stored in the case, when the main body of the electromagnetic equipment was stored in the case, the heavy electromagnetic It is possible to alleviate the addition to the end plate, maintain the closed state of the end plate with respect to the case body, and prevent the first filler from leaking.

According to the discharge lamp lighting device of the fifth aspect,
Since the electromagnetic device according to any one of claims 1 to 4 is provided, waterproof performance and tensile strength of the lead wire can be secured.

According to the lighting apparatus of the sixth aspect, since the discharge lamp lighting device of the fifth aspect is provided, the lead wire is reliably held by the lead wire holding member for the wiring processing of the lead wire. Waterproof performance can be maintained.

[Brief description of the drawings]

FIG. 1 is a sectional view of an electromagnetic device according to an embodiment of the present invention.

FIG. 2 is a sectional view of the electromagnetic device.

FIG. 3 is a perspective view of a lighting apparatus using the electromagnetic device in a discharge lamp lighting device.

FIG. 4 is a circuit diagram of the discharge lamp lighting device.

FIG. 5 is a cross-sectional view of an electromagnetic device showing another embodiment of the present invention.

FIG. 6 is a sectional view of the electromagnetic device.

FIG. 7 is a cross-sectional view of a conventional electromagnetic device.

FIG. 8 is a sectional view of the electromagnetic device.

[Explanation of symbols]

 11 Electromagnetic device 12 Electromagnetic device body 13 Lead wire 14 Lead wire holder 15 Case 16 First filling material 17 Second filling material 34 Prevention part 41 Case body 42 Opening 43 End plate 51 Lighting equipment 52 Discharge lamp lighting device 53 Appliance body 54 Straight tube fluorescent lamp as discharge lamp 61 Buffer material

Claims (6)

[Claims] 1. An electromagnetic device main body to which a lead wire is connected;
A case having an opening, through which the electromagnetic device main body is housed and from which a lead wire is drawn out; a first filler filled in the case and surrounding the electromagnetic device main body;
A second filler, which is softer than the first filler and is filled on the opening side with respect to the first filler in the case;
A lead wire holder at least partially embedded in the first filler. 2. The electromagnetic device according to claim 1, wherein a portion of the lead wire holder other than a portion embedded in the first filler is embedded in the second filler. 3. An outer surface of a portion of the lead wire holding body embedded in the first filler material is provided with a retaining portion for preventing the first filler material from coming off in the lead-out direction of the lead wire. The electromagnetic device according to claim 1, wherein: 4. A case, comprising: a cylindrical case body having an opening at one end; and an end plate closing the other end of the case body, wherein the end plate of the case and the electromagnetic device body housed in the case are connected to each other. 2. The structure according to claim 1, wherein a cushioning material is interposed therebetween.
4. The electromagnetic device according to any one of items 3 to 3. 5. A discharge lamp lighting device comprising the electromagnetic device according to claim 1. 6. A lighting fixture, comprising: the discharge lamp lighting device according to claim 5; and a fixture main body to which a discharge lamp to be lighted by the discharge lamp lighting device is mounted.