JP3900333B2 - Case for electrical equipment, lighting equipment for electrical equipment and discharge lamp - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a case for an electric device, an electric device, and a lighting device for a discharge lamp in which an insulator is disposed between the case and a power feeding terminal.
[0002]
[Prior art]
When the electric device is stored in the case, an insulator is provided between the case and the power supply terminal of the electric device to prevent an electrical accident caused by the power supply terminal of the electric device coming into contact with the case. For example, a discharge lamp lighting device has a lighting device body (electric device body) housed in a case, and an example thereof is shown in FIG.
[0003]
In a discharge lamp lighting device 50 (prior art) shown in FIG. 4, a circuit board 53 on which electronic components 51, 52, etc. are mounted is housed in a case 56 including a metal case body 54 and a case lid 55. A sheet-like insulator 57 is disposed in the case 56 so as to surround the electronic components 51 and 52 and the circuit board 53. The insulator 57 is attached with an adhesive tape 58 on the overlapping portion 57a as shown in FIG. 5 in order to make it easy to attach the case lid 55 and prevent it from coming into contact with the electronic components 51, 52 and the like. Is fixed.
[0004]
[Problems to be solved by the invention]
In the discharge lamp lighting device 50 of the prior art, since the overlapping portion 57a of the insulator 57 is fixed with the adhesive tape 58 after removing dirt and the like so that the adhesive tape 58 is not peeled off, the number of manufacturing steps increases. , Has the disadvantage that workability is poor.
[0005]
The present invention has been made in view of the above problems, and an object of the present invention is to provide an electrical device case, an electrical device, and a discharge lamp lighting device that can be assembled at low cost.
[0006]
[Means for Solving the Problems]
The invention for an electrical equipment case according to claim 1 has an opening on one side and a metal bottomed case body in which the electrical equipment body is accommodated from the opening; and is fitted into the opening of the case body. The case lid; deformable along the shape of the case body and the case lid, and the electrical equipment body so as to be positioned at the opening of the case body so as to overlap each other so that one end side is the inside and the other end side is the outside A sheet-like insulator surrounding the casing; and when the case lid is fitted into the opening of the case body, the other end side positioned outside is engaged without locking the one end side positioned inside the insulator. And a locking piece provided inside the case lid so as to be able to be stopped.
[0007]
The insulators are overlapped and fixed to each other only by fitting the case lid to the case main body so that one end side is inward and the other end side is outer in the opening of the case main body. Therefore, it is not necessary to attach and fix one end side and the other end side of the insulator with the adhesive tape. And by appropriately setting the size of the insulator, the electric device main body can be surrounded as desired.
[0008]
According to the present invention, when the case lid is fitted into the opening of the case body, the insulator is deformed along the shape of the case lid from the one end side and the other end side, and the one end side is engaged with the locking piece. The other end side is locked to the locking piece without being stopped, and the one end side is positioned on the inner side and the other end side is positioned on the outer side and overlapped with each other. Therefore, since it is not necessary to make the one end side and the other end side of an insulator overlap each other, the workability | operativity in the assembly of an electric equipment improves. Moreover, since the other end side of an insulator is latched by the latching piece, it is suppressed that a shift | offset | difference arises in an insulator by vibration, such as conveyance of an electric equipment, for example.
[0009]
The electrical device case according to claim 2 is the electrical device case according to claim 1, characterized in that the locking piece is formed by cutting and raising inside the case lid.
[0010]
According to the present invention, since the locking piece is formed by cutting and raising inside the case lid, it is integrated with the case lid and is formed at low cost.
[0011]
According to a third aspect of the present invention, there is provided an electric device case according to the first or second aspect; and an electric device main body housed in the case main body.
[0012]
According to the present invention, when the electric device main body is housed in the case main body and the case lid is fitted into the opening of the case main body, the electric device main body is surrounded by the insulator. As a result, even if the electric device main body is detached or damaged in the case main body, the power feeding portion faces the case through the insulator, so that leakage to the case is prevented and electric shock is prevented. .
[0013]
An invention of a lighting device for a discharge lamp according to claim 4 includes: a case for an electric device according to claim 1; and a lighting device body that is provided with a lighting circuit for lighting the discharge lamp and is housed in the case body. It is characterized by having.
[0014]
The lighting device main body means an electric equipment main body, and may be any of a high-frequency lighting device configured using an electronic component such as a transistor, and a ballast configured using an iron core and a winding.
[0015]
According to the present invention, when the lighting device main body is housed in the case main body and the case lid is fitted into the opening of the case main body, the lighting device main body is surrounded by the insulator. As a result, even if the lighting device main body is removed or damaged in the case main body, the power feeding portion faces the case through the insulator, so that leakage to the case is prevented and electric shock is prevented. .
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
[0017]
1 to 3 show an embodiment of the present invention, FIG. 1 is a schematic sectional view of an electric device, FIG. 2 is a partially exploded perspective view of the electric device, and FIG. 3 is an assembly process of the electric device. It is explanatory drawing shown.
[0018]
In FIG. 1, 1 is an electric device, 2 is an electric device case, 3 is an electric device main body, 4 is a case main body, 5 is a case lid, 6 is an insulator, and 7 is a locking piece.
[0019]
The electric device 1 is a discharge lamp lighting device that lights a discharge lamp, and a lighting device main body 3 as an electric device main body is housed in a case main body 4.
[0020]
The case main body 4 is made of metal, for example, aluminum, and is a long frame body that is formed on the side portions 4a and 4a and the bottom portion 4b by bending one flat plate. That is, the case body 4 has an opening 4c on one side, and the other is formed in a box shape with a bottom. And in the case main body 4, the lighting device main body 3 as an electric equipment main body is accommodated. A pair of convex portions 8 are provided on the side portions 4 a and 4 a located at both ends in the longitudinal direction of the case body 4.
[0021]
The lighting device main body 3 includes a circuit board 9 on which electronic components such as a transistor Tr, a film capacitor C1, and a resistor R1 are mounted. The lighting device body 3 includes a known high-frequency lighting circuit 10 that lights a discharge lamp on the circuit board 9. . Then, the lighting device body 3 is accommodated in the case body 4 by fitting the circuit board 9 between the four convex portions 8.
[0022]
The case lid 5 is made of metal, for example, aluminum, and is fitted into the opening 4 c of the case body 4. That is, as shown in FIG. 2, the case lid 5 is formed in a long frame body having a single flat plate bent in two left and right sides and having side portions 5a, 5a, inclined portions 5b, 5b and a horizontal portion 5c. Has been. The side portions 5a and 5a and the inclined portions 5b and 5b are bent so as to have springiness, and when the case lid 5 is fitted into the opening 4c of the case body 4, the side portions 5a and 5a The side parts 4a and 4a of the main body 4 are firmly held. At both ends in the longitudinal direction of the case lid 5, end plates (not shown) are formed by bending portions extending continuously from the horizontal portion 5c so as to form surfaces perpendicular to the side portions 5a and 5a. It has been. This end plate shields the lighting device body 3 of the case body 4 from entering a finger or the like.
[0023]
A locking piece 7 cut and raised inside the case lid 5 is provided at the center of the horizontal portion 5c of the case lid 5 so that the other end 6b of the insulator 6 can be locked. Since the locking piece 7 is formed by cutting and raising the inner side of the horizontal portion 5c of the case lid 5 without using other members, it is inevitably integrated with the case lid 5 and inexpensive. Can be formed.
[0024]
The insulator 6 is made of, for example, polyester formed in a sheet shape, and can be deformed along the shapes of the case main body 4 and the case lid 5. As shown in FIG. 2, the one end side 6 a and the other end side 6 b are housed in a state of being bent so as to have elasticity so as to expand in the opening direction of the case body 4. The insulator 6 is located between the convex portions 8 provided at the four corners of the case body 4 in the longitudinal direction of the case body 4. And as shown in FIG. 1, while surrounding the lighting device main body 3, the one end side 6a and the other end side 6b are located in the opening 4c of the case main body 4 so that the one end side 6a is inward and the other end side is located. 6b overlaps with each other so that they are on the outside. The other end side 6 b is locked to the locking piece 7, and the one end side 6 a is located on the back surface of the locking piece 7 and is not locked to the locking piece 7.
[0025]
Thus, the discharge lamp lighting device 1 and the electrical equipment case 2 as electrical equipment are configured.
[0026]
Next, the operation of the embodiment of the present invention will be described with reference to FIG.
[0027]
First, as shown in FIG. 3A, the insulator 6 and the lighting device main body 3 can be accommodated in this order in the opening 4c of the case main body 4 so that the case lid 5 can be fitted.
[0028]
Then, as shown in FIG. 3B, the insulator 6 and the lighting device main body 3 are accommodated from the opening 4 c of the case main body 4. At this time, the insulator 6 is deformed along the inner shape of the case main body 4, and when the lighting device main body 3 is stored, the one end side 6 a and the other end side 6 b are the side portions 4 a and 4 a of the case main body 4. And expands on the opening 4c. In the lighting device main body 3, the circuit board 9 gets over the convex portion 8 and is supported between the convex portions 8 and 8. Thereby, the lighting device main body 3 is accommodated on the bottom portion 4 b of the case main body 4 via the insulator 6.
[0029]
Then, the case lid 5 is positioned on the opening 4 c of the case body 4 such that the side portions 5 a and 5 a of the case lid 5 are inward of the one end side 6 a and the other end side 6 b of the insulator 6. Then, the case lid 5 is moved to the opening 4 c side so as to be fitted into the opening 4 c of the case body 4. At this time, the tip of one end 6 a and the tip of the other end 6 b of the insulator 6 are in contact with the inclined portions 5 b and 5 b of the case lid 5. The one end side 6a and the other end side 6b are guided along the inclined portions 5b and 5b and incline inward as the case lid 5 approaches the opening 4c of the case body 4.
[0030]
Then, as shown in FIG. 3C, the one end side 6 a of the insulator 6 moves from the inclined portion 5 b of the case lid 5 along the horizontal portion 5 c and the back surface 7 a of the locking piece 7. On the other hand, the other end side 6b moves from the inclined part 5b to the horizontal part 5c and then moves to the locking surface 7b side of the locking piece 7.
[0031]
And since the locking piece 7 is formed by cutting and raising the horizontal portion 5c inward, and the locking surface 7b is connected to the outer surface of the horizontal portion 5c, as shown in FIG. When the case lid 5 is fitted in the opening 4c, the other end 6b of the insulator 6 is prevented from moving at the boundary between the locking surface 7b and the outer surface of the horizontal portion 5c. On the other hand, the one end side 6 a is further moved from the back surface 7 a of the locking piece 7 without being locked to the locking piece 7 and is positioned in the opening 4 c of the case body 4. In this way, the insulator 6 is fixed so that the one end side 6a is on the inner side and the other end side 6b is on the outer side, and is positioned at the opening 4c of the case main body 4 so as to surround the lighting device main body 3 without a break. Since the insulator 6 surrounds the lighting device main body 3 seamlessly, the power supply section of the lighting device main body 3, for example, leads such as a film capacitor C1 and a resistor R1 mounted on the circuit board 9, the case main body 4 and the case lid Contact with the body 5 is prevented.
[0032]
Further, when the case lid 5 is fitted into the opening 4c of the case body 4, the side portions 5a and 5a of the case lid 5 press the side portions 4a and 4a of the case body 4 inward from each other. And hold firmly. As a result, the circuit board 9 of the lighting device main body 3 is sandwiched between the side portions 5 a and 5 a of the case lid 5 via the insulator 6 and the side portions 4 a and 4 a of the case main body 4. Therefore, the circuit board 9 is unlikely to be detached from the convex portions 8 and 8 depending on the mounting method of the discharge lamp lighting device 1. Even if the circuit board 9 is removed from the convex portions 8, 8, since the lighting device body 3 is surrounded by the insulator 6, contact with the electrical device case 2, that is, the case body 4 and the case lid 5, Electric leakage is prevented and electric shock can be prevented.
[0033]
As described above, one end side 6a of the insulator 6 is positioned on the inner side and the other end side 6b is positioned on the outer side simply by fitting the case lid 5 into the opening 4c of the case body 4 without using an adhesive tape or the like. Thus, the assembly workability of the discharge lamp lighting device 1 can be improved. Moreover, since the locking piece 7 can be formed by cutting and raising without using other members, the discharge lamp lighting device 1 can be made inexpensive.
[0034]
In addition, the lighting device body 3 may be configured by a ballast composed of an iron core and a winding, instead of a high-frequency lighting circuit for lighting a discharge lamp at a high frequency. At this time, the case body 4 and the case lid 5 may be made of a galvanized iron plate or the like.
[0035]
Although the discharge lamp lighting device 1 has been described as an electrical device, the present invention is not limited to this, and the electrical device may be a DC power supply device, a power stabilization device, a driving device such as a motor, various control devices, and the like.
[0036]
【The invention's effect】
According to the first aspect of the present invention, when the case lid is fitted into the opening of the case main body, the insulator is deformed along the shape of the case lid from the one end side and the other end side, and the one end side is locked. Since the other end side is locked to the locking piece without being locked to the piece, and the one end side is positioned on the inner side and the other end side is positioned on the outer side, the workability of assembling the electric equipment can be improved.
[0037]
According to the invention of claim 2, since the locking piece is formed by cutting and raising inside the case lid, it can be formed at a low cost by being integrated with the case lid.
[0038]
According to the invention of claim 3, since the electric device main body is surrounded by the insulator, even if the electric device main body is detached or damaged in the case main body, the leakage to the case is prevented and electric shock is prevented. It is possible to provide an electrical device that is prevented.
[0039]
According to the invention of claim 4, since the lighting device main body is surrounded by the insulator, even if the lighting device main body is removed or damaged in the case main body, the leakage to the case is prevented and electric shock is prevented. A discharge lamp lighting device that can be prevented can be provided.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view of an electrical apparatus showing an embodiment of the present invention.
FIG. 2 is a partially exploded perspective view of an electric device.
FIG. 3 is also an explanatory view showing an assembly process of an electric device.
FIG. 4 is a schematic cross-sectional view of a conventional discharge lamp lighting device.
FIG. 5 is a partially exploded perspective view of the discharge lamp lighting device.
[Explanation of symbols]
1 .................. Discharge lamp lighting device 2 as an electrical device ............ …… Electric device case 3 …………………… Lighting device body 4 as an electrical device body ............ ……… Case body 5 ………………… Case lid 6 ………………… Insulator 7 ………………… Locking piece

Claims (4)

A metal bottomed case body having an opening on one side and housing the electric device body from the opening;
A case lid fitted into the opening of the case body;
A sheet shape that can be deformed along the shape of the case body and the case lid and surrounds the electrical device body so that one end side is on the inside and the other end side is on the outside so as to overlap each other and be positioned at the opening of the case body An insulator of;
When the case lid is fitted to the opening of the case body, the other end located outside can be locked inside the case lid without locking the one end located inside the insulator. With a locking piece;
A case for electrical equipment, comprising: The case for an electric device according to claim 1, wherein the locking piece is formed by cutting and raising inside the case lid. A case for an electric device according to claim 1 or 2;
An electric device main body stored in the case main body;
An electrical apparatus comprising: A case for an electric device according to claim 1 or 2;
A lighting device body having a lighting circuit for lighting a discharge lamp and housed in the case body;
A discharge lamp lighting device comprising:

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