JPH0513252A - Electrical equipment and lighting - Google Patents

Abstract

PURPOSE:To prevent the inferiority of filling up by putting a lead wire between a transformer and the inwall of a case, and positioning it, and regulating the action of the section, which is filled up with filler, of the lead wire. CONSTITUTION:An electric part 11 and a board 12 is accommodated in a case 21, and it is filled up with a filler 23. The transformer 4 of the electric part 11 is arranged on the side of the aperture 22 of the case 21. The lead wire 17 connected to the board 12 is led out of the case through the space between the transformer 4 and the inwall 21a of the case 21.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric device in which an electric part is housed in a case and filled with a filling material, and a lighting fixture using a lighting device configured like this electric device.

[0002]

2. Description of the Related Art For example, in a spotlight type luminaire using a halogen lamp, there is a case where a space for arranging a lighting device for lighting the lamp cannot be set large.
Accordingly, the lighting device needs to be downsized.

The lighting device includes a rectifier circuit whose input side is connected to a power source, an inverter circuit, and an output transformer whose output side is connected to a lamp.

[0004]

By the way, when the lighting device is downsized, the problems of heat generation and insulation must be solved.

Therefore, a rectifier circuit, an inverter circuit, an output transformer, etc. are housed in a case with one end open,
There is a means of filling the filling material. As a result, the heat can be made uniform and the insulation can be ensured by the filling material while being made compact.

Input and output lead wires are respectively connected to the input side of the rectifier circuit and the output side of the transformer, and these lead wires are led out from the opening of the case and connected to a power supply and a lamp.

However, when the lead wire moves at the stage where the filling material is cured due to handling such as transportation during the filling process, a gap is created between the lead wire and the filling material which is being cured. Therefore, the charging portion may be exposed due to this improper filling, resulting in a decrease in reliability.

The present invention has been made in view of the above circumstances, and an object thereof is to prevent the occurrence of defective filling and to improve reliability.

[0009]

According to a first aspect of the present invention, there is provided a case having an opening at one end, a board on which electrical parts including a transformer are mounted and accommodated in the case, and an opening portion of the case connected to the board. Lead wire for electrical connection that is pulled out,
In an electric device provided with a filling material filled in a case accommodating an electric component and a substrate, the transformer is arranged on an opening side of the case, and the lead wire is provided between the transformer and an inner wall of the case. It was pulled out of the case.

According to a second aspect of the present invention, in a lighting fixture including a lamp and a lighting device for lighting the lamp, the lighting device is provided with a case having one end opened and an electric part including a transformer mounted therein. A lighting circuit board housed in the housing, an input / output lead wire connected to the lighting circuit board and drawn from the opening of the case, and a filling material filled in the case housing the electric component and the lighting circuit board. The transformer is arranged on the opening side of the case, and the lead wire is drawn out of the case from between the transformer and the inner wall of the case.

[0011]

According to the first aspect of the invention, the electric component and the substrate are housed in the case, and the filler is filled in the gap between the case and the electric component and the substrate. The lead wire connected to the substrate housed in the case is drawn out of the case through a space between the transformer arranged on the opening side of the case and the inner wall of the case. Therefore, the lead wire is sandwiched in a state of being positioned between the transformer and the inner wall of the case, the movement of the portion of the lead wire filled with the filler is restricted, and a gap is generated between the lead wire and the filler. Is prevented.

In the invention of claim 2, the lamp is turned on by the lighting device. The lighting device accommodates an electric component and a substrate in a case, and fills a gap between the case and the electric component and the substrate with a filler. The lead wire connected to the substrate housed in the case is drawn out of the case through a space between the transformer arranged on the opening side of the case and the inner wall of the case. Therefore, the lead wire is sandwiched in a state of being positioned between the transformer and the inner wall of the case, the movement of the portion of the lead wire filled with the filler is restricted, and a gap is generated between the lead wire and the filler. Is prevented.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of an embodiment of the present invention will be described below with reference to the drawings.

FIG. 3 shows a lamp lighting circuit. A lighting device 1 includes a rectifier circuit 2, an inverter circuit 3, and a transformer 4.
It consists of and. An AC commercial power supply 5 is connected to the input parts a and b of the rectifier circuit 2 of the lighting device 1, and the transformer 4
The halogen lamp 6 is connected to the output parts c and d of the.

1 and 2 show the structure of the lighting device 1. The electric component 11 of the lighting device 1 is mounted on the substrate 12. The substrate 12 is composed of an input-side substrate portion 13, an output-side substrate portion 14, and an intermediate substrate portion 15.

On the input side substrate portion 13 is mounted an electric component 11 which constitutes the rectifying circuit 2 and the like. Output side board section 14
An electric component 11 that constitutes the inverter circuit 3 and the like are mounted on the, and a transformer 4 is mounted. The electric component 11 is also mounted on the intermediate board portion 15.

The board portions 13 and 14 are arranged in parallel vertically with the mounting surfaces of the electric component 11 facing each other, and the board portion 15 faces the mounting surface of the electric component 11 to the outside.
It is located at the end of. The board portions 13 and 14 and the board portion 15 are electrically and mechanically connected by a jumper wire 16. It should be noted that some of the electric components 11 mounted on the board unit 14
The end of a fits into the notch 13a formed in the substrate 13,
It is designed to be positioned.

The input side board portion 13 has the input portions a and b.
Is connected to a pair of input lead wires 17. A pair of output lead wires 18 constituting the output portions c and d are connected to the transformer 4 mounted on the output side substrate portion 14.

The electric component 11 and the board 12 are cases.
It is stored in 21. The case 21 is made of an insulating synthetic resin and is formed into a rectangular tubular shape having an opening 22 at one end.

A filling material 23 is filled in the case 21. This filler 23 has an initial hardness of 30 to 80 (J
ISA) made of urethane type, epoxy type and silicon type materials.

FIG. 4 shows a spotlight type luminaire.
31 is shown. The lighting fixture 31 includes an installation portion 32 installed on a ceiling or the like, an arm 33 projecting downward from the installation portion 32, and an equipment body 34 rotatably supported by a lower end portion of the arm 33.
It consists of and. A lamp 6 is built in the instrument main body 34, and light is emitted in spots from an irradiation unit 35 on the front surface.
The lighting unit 1 is built in the installation unit 32.

Next, the operation of this embodiment will be described.

When the electric parts 11 and the board 12 are housed in the case 21, as shown in FIG.
13, 14, 15 are arranged, and the lead wire 17 connected to the board portion 13 on the input side is attached to the transformer 4. Electrical parts in this state
11 and the substrate 12 are inserted through the opening 22 of the case 21.

In this housed state, the lead wire 17 is sandwiched in a state of being positioned between the transformer 4 and the inner wall 21a of the case 21, and pulled out from the opening 22. Lead wire 18
Is also drawn out from the opening 22.

Then, with the opening 22 of the case 21 facing upward, the filling material 23 is dropped through the opening 22 and the case 21 and the electric components 11 and the board 12 housed inside the case 21 are connected. The filling material 23 is densely filled in the gap.

After the filling of the filling material 23, the filling material 23 hardens with the passage of time. At this time, even if the tip end side of the lead wire 17 protruding from the case 21 is shaken due to handling such as transportation during the filling process, the lead wire 17 is connected to the transformer 4 and the case.
Since it is sandwiched in a state of being positioned between the inner wall 21a of 21 and the filling wall 23 of the lead wire 17, movement of the portion of the lead wire 17 filled with the filling material 23 is restricted, and a gap is formed between the lead wire 17 and the filling material 23. Are prevented from occurring.

The lead wire 18 on the output side is the transformer 4
, The movement of the portion of the lead wire 18 filled with the filling material 23 is regulated, and no gap is generated between the lead wire 18 and the filling material 23.

Then, the lighting device 1 thus formed
Is built in the installation section 32 of the lighting fixture 31 and turns on the lamp 6.

Further, by pulling out the lead wire 17 from the side portion of the transformer 4 shown in FIGS. 1 and 2, the height of the lighting device 1 can be reduced and the size can be further reduced.

[0030]

According to the first aspect of the present invention, the transformer housed in the case is arranged on the opening side of the case, and the lead wire is pulled out from between the transformer and the inner wall of the case. Since the case is filled with the filling material, the lead wire can be sandwiched between the transformer and the inner wall of the case in a positioned state, and movement of the portion of the lead wire filled with the filling material can be restricted. Therefore, in the filling process, even if the tip side of the lead wire protruding from the case is shaken due to handling such as transportation, it is possible to prevent a gap from being formed between the lead wire and the filling material, eliminate filling failure, and improve reliability. Can be improved.

According to the second aspect of the present invention, in a lighting apparatus including a lamp and a lighting device for lighting the lamp, the lighting device arranges the transformer housed in the case on the opening side of the case. At the same time, the lead wire is pulled out from between this transformer and the inner wall of the case, and since the case is filled with the filling material in this state, the lead wire is sandwiched between the transformer and the inner wall of the case in a positioning state, It is possible to regulate the movement of the portion of the wire filled with the filler. Therefore, in the filling process, even if the tip side of the lead wire protruding from the case shakes due to handling such as transportation, it is possible to prevent a gap from being formed between the lead wire and the filling material, eliminate defective filling, and improve the reliability of the device It is possible to improve the sex.

[Brief description of drawings]

FIG. 1 is a sectional view of a lighting device showing an embodiment of the present invention.

FIG. 2 is a perspective view of a lighting device.

FIG. 3 is a circuit diagram of a lighting circuit.

FIG. 4 is a side view of the lighting fixture.

[Explanation of symbols]

1 lighting device 4 transformers 6 lamps 11 electrical components 12 board 17 Lead wire 21 cases 22 opening 23 Filling material 31 Lighting equipment

Claims (2)

[Claims] 1. A case having an opening at one end, a substrate on which an electric component including a transformer is mounted and accommodated in the case, a lead wire for electrical connection which is connected to the substrate and is drawn out from an opening of the case, and In an electric device provided with a filling material filled in a case accommodating components and a substrate, the transformer is arranged on the opening side of the case, and the lead wire is provided between the transformer and an inner wall of the case. An electric device characterized by being pulled out. 2. A lighting fixture comprising a lamp and a lighting device for lighting the lamp, wherein the lighting device is provided with a case having an opening at one end, and an electric part including a transformer mounted on the lighting device. The transformer includes a circuit board, input / output lead wires connected to the lighting circuit board and drawn out from the opening of the case, and a filling material filled in the case accommodating the electric components and the lighting circuit board. Is arranged on the opening side of the case, and a lead wire is drawn out of the case from between the transformer and the inner wall of the case.