JP6955218B2 - Power supply and lighting equipment - Google Patents

Description

An embodiment of the present invention relates to a power supply device provided with a terminal block and a lighting fixture using the power supply device.

Conventionally, for example, in a lighting fixture, a terminal block and a power supply device are attached to the main body of the fixture, and a light source is arranged. The terminal block and the power supply are often connected by internal wiring.

There is also a power supply with a terminal block. In this case, it is possible to connect by the terminal structure without using the internal wiring, but if the terminal block moves when inserting and connecting the external wiring such as the power supply line to the terminal block, a load is applied to the terminal structure and the connection is made. There is a risk of defects.

Japanese Unexamined Patent Publication No. 2016-110933

An object to be solved by the present invention is to provide a power supply device and a lighting fixture provided with a terminal block capable of preventing the occurrence of poor connection.

The power supply unit of the embodiment includes a case, a power supply circuit, and a terminal block. The case has an opening on one end side and a case edge on one end side thereof. The power supply circuit has a circuit board on which electronic components are mounted and a board-side terminal mounted on one end side of the circuit board, and is housed in a case and the board-side terminal is arranged on one end side in the case. .. The terminal block has a first surface and a second surface opposite to the first surface, and has a wire insertion hole on the first surface, and a terminal block main body and a second surface side of the terminal block main body. It has a terminal block side terminal that is arranged in and connected to the board side terminal. With the terminal block side terminals connected to the board side terminals, the second surface of the terminal block body faces the case edge of the case, and the second surface of the terminal block body and the case edge of the case The distance between the two is narrower than the distance between the facing portion of the terminal block main body facing the board-side terminal and the board-side terminal.

According to the embodiment, it can be expected to provide a power supply device provided with a terminal block capable of preventing the occurrence of poor connection.

It is a front view of a part of the power supply device which shows one Embodiment. It is a perspective view of the terminal block and the circuit board of the power supply device of the same as above. It is a side view which shows the 1st surface of the terminal block of the same as above. It is a side view of the terminal storage part of the terminal block and the terminal on the terminal block side of the same as above. It is a front view of the terminal storage part of the terminal block and the terminal on the terminal block side of the same as above. It is a front view of the power supply device of the same as above. It is a side view of the power supply device of the same as above. It is a front view of the fixture main body of the lighting fixture using the power supply device as above. It is a perspective view of the lighting fixture as above.

Hereinafter, one embodiment will be described with reference to the drawings.

As shown in FIGS. 8 and 9, the luminaire 10 is a long, for example, ceiling-mounted luminaire. The lighting fixture 10 includes a long fixture main body 11, a terminal block 12, a power supply device 13, and a light source unit 14 attached to the fixture main body 11.

Then, as shown in FIG. 8, the instrument main body 11 includes an elongated mounting surface portion 20, side surface portions 21 provided on both sides in the lateral direction intersecting the longitudinal direction of the mounting surface portion 20, and a mounting surface portion. It has end face portions 22 provided at both ends in the longitudinal direction of 20, and an opening is formed on the opposite side to the mounting surface portion 20. The mounting surface portion 20 is provided with wiring holes 23, and is provided with a plurality of mounting holes (not shown) for installation on a ceiling or the like. Further, a power supply device 13 to which the terminal block 12 is attached facing the wiring hole 23 is attached to the attachment surface portion 20. Further, mounting brackets 24 for mounting the light source unit 14 to the fixture main body 11 are mounted near both ends of the mounting surface portion 20.

Further, as shown in FIGS. 1 to 3, the terminal block 12 includes a terminal block main body 30, a plurality of electric wire connection terminals (not shown) arranged in the terminal block main body 30, and a plurality of terminal block side terminals 31. There is.

The terminal block main body 30 is made of resin, for example, and has an insulating property. The terminal block main body 30 has, for example, a case and a cover that can be opened and closed with respect to the case, and the case and the cover are combined to form a substantially rectangular parallelepiped shape. One side surface of the terminal block main body 30 is a first surface 30a, and the other side surface opposite to the first surface 30a is a second surface 30b.

A plurality of electric wire insertion holes 32 are formed on the first surface 30a of the terminal block main body 30. The plurality of wire insertion holes 32 include at least for the external power supply wiring and the feed wiring of the external power supply, and further, for the dimming signal wiring and the feed wiring of the dimming signal, for the ground wiring and this ground. It may be included for feed wiring and the like.

Inside the wire insertion holes 32 in the terminal block main body 30, wire connection terminals, which are quick-connect terminals that electrically connect the wires inserted in the wire insertion holes 32 in a locked state, are arranged respectively. ing. Further, a release hole 33 is provided in the vicinity of the electric wire insertion hole 32 on the first surface 30a of the terminal block main body 30. Inside the release hole 33, a release button (not shown) is arranged so that the electric wire connection terminal is separated from the electric wire so that the electric wire can be pulled out.

The terminal block main body 30 is attached to the power supply device 13 by a screw 34 inserted from the upper surface side orthogonal to the first surface 30a and the second surface 30b. A protrusion that fits into the power supply device 13 may be provided on the lower surface side of the terminal block main body 30, and the terminal block main body 30 may be positioned and fixed to the power supply device 13 by the protrusion and the screw 34.

A terminal housing portion 35 is integrally projected on the second surface 30b of the terminal block main body 30. The terminal housing portion 35 projects from an intermediate position in the height direction of one side surface of the terminal block main body 30, and is formed wide along the width direction of the second surface 30b of the terminal block main body 30. As shown in FIGS. 4 and 5, a plurality of groove portions 36 are provided at predetermined intervals on the tip end side of the terminal accommodating portion 35 in the protruding direction. The groove portion 36 is provided from the tip surface of the terminal accommodating portion 35 to an intermediate position in the protruding direction of the terminal accommodating portion 35. The tip end side of the groove portion 36 is provided in an inclined shape so as to expand toward the tip end side of the terminal storage portion 35. Inside the groove 36, a terminal storage recess 37 for accommodating the terminal block side terminal 31 is provided. The terminal housing portion 35 may be attached to the terminal block main body 30 after being formed separately from the terminal block main body 30.

The terminal block side terminal 31 is arranged in each groove 36 of the terminal housing 35. That is, the terminal block side terminal 31 is housed in each terminal storage recess 37 of the terminal storage unit 35, respectively. Each terminal block side terminal 31 is electrically connected to a corresponding electric wire connection terminal among a plurality of electric wire connection terminals arranged in the terminal block main body 30.

The terminal block side terminal 31 is composed of, for example, a leaf spring. The terminal block side terminal 31 is bent in a U shape so that both ends face each other with respect to the middle portion of the leaf spring, and the tip ends of both ends of the leaf spring are substantially V-shaped toward the middle portion side of the leaf spring. It is bent to. A pair of contact piece portions 31a that are in contact with each other and have elasticity in the direction of contact with each other are provided on the tip end side of these leaf springs. The pair of contact piece portions 31a are arranged in the groove portion 36.

Further, as shown in FIGS. 6 and 7, the power supply device 13 includes a case 40 and a circuit board 41 housed in the case 40. The case 40 is formed in the shape of a quadrangular cylinder with both ends open. The case 40 has, for example, a case body 42 having a substantially U-shaped cross section and a cover 43 having a substantially U-shaped cross section, and these case bodies 42 and the cover 43 are combined with each other to form a quadrangular cylinder.

The case body 42 has a bottom plate portion 44 and side plate portions 45 raised from both sides of the bottom plate portion 44. One end side of the bottom plate portion 44 protrudes from the side plate portion 45. Mounting piece portions 46 for mounting on the instrument main body 11 are provided at both ends of the bottom plate portion 44.

The cover 43 is formed in a substantially U-shaped cross section having an upper plate portion 47 and side plate portions 48 provided on both sides of the upper plate portion 47. The side plate portions 48 on both sides of the cover 43 are arranged and fixed on the outer surface side of the side plate portions 45 on both sides of the case body 42.

One end side of the side plate 45 of the case body 42 and one end side of the cover 43 (including the upper plate 47 and the side plate 48) coincide with each other, and one end side of the side plate 45 of the case body 42 and the cover 43 (upper plate). One end side of (including the portion 47 and the side plate portion 48) is a case edge portion 40a forming an opening edge on one end side of the case 40.

One end side of the bottom plate portion 44 protrudes from one end side of the side plate portion 45 of the case body 42 and the case edge portion 40a which is one end side of the cover 43, and the terminal block 12 is arranged at the protruding portion of the bottom plate portion 44 and screwed. A terminal block mounting portion 49 that can be mounted at 34 is provided. That is, a terminal block mounting portion 49 for mounting the terminal block 12 is provided on one end side of the case 40. Further, the other end side of the case body 42 protrudes from the other end side of the cover 43.

The width in the width direction in which the side plate portions 45 and 48 on both sides of the case 40 face each other and intersect in the longitudinal direction of the case 40, and the height of the top plate portion 47 of the cover 43 from the bottom plate portion 44 are determined. The relationship is smaller than the width in the width direction and the height in the height direction of the terminal block main body 30 of the terminal block 12 mounted on the terminal block mounting portion 49. That is, the width in the width direction and the height in the height direction of the terminal block main body 30 of the terminal block 12 are larger than the width and height of the case edge portion 40a of the case 40. Then, in a state where the terminal block main body 30 of the terminal block 12 is attached to the terminal block mounting portion 49 of the bottom plate portion 44, both side portions and the upper portion of the terminal block main body 30 project outward from the case edge portion 40a of the case 40. , The second surface 30b of the terminal block main body 30 is in a positional relationship facing the case edge 40a of the case 40.

The circuit board 41 is configured as a power supply circuit 50 that converts external power such as an AC power supply supplied from the outside into a predetermined lighting power supply such as a DC power supply and supplies it to the light source unit 14.

One surface of the circuit board 41 is a wiring pattern surface 41a on which a wiring pattern is formed, and the other surface is a mounting surface 41b on which a plurality of electronic components 51 constituting the power supply circuit 50 are mounted. The electronic component 51 mounted on the mounting surface 41b has a leg such as a lead wire, and the leg is soldered to a wiring pattern through the circuit board 41.

A plurality of board-side terminals 52 to which each terminal block-side terminal 31 of the terminal block 12 is connected are mounted on one end side of the circuit board 41. The board-side terminal 52 is formed in a substantially flat plate shape, is orthogonal to one end edge of the circuit board 41, and is erected perpendicularly to the mounting surface 41b of the circuit board 41. At least three or more legs 53 are provided on the board-side terminals 52, and these legs 53 are soldered and connected to the wiring pattern through the circuit board 41. The substrate-side terminal 52 may be provided with a bent portion or bent into an L shape in order to improve the strength.

One end side of the circuit board 41 is arranged inside the case edge 40a of the case 40. Therefore, a plurality of board-side terminals 52 provided on one end side of the circuit board 41 are also arranged inside the case edge portion 40a of the case 40.

There is a height relationship between one end side of the circuit board 41 and the terminal housing portion 35 of the terminal block 12 so as not to hit each other. That is, the terminal storage portion 35 of the terminal block 12 mounted on the terminal block mounting portion 49 is at a higher position than the circuit board 41. Further, the board-side terminal 52 on the circuit board 41 enters the groove 36 of the terminal storage portion 35 and is connected to the terminal block-side terminal 31 in a height relationship.

A connector 54 for connecting to the light source unit 14 by wiring is mounted on the other end side of the circuit board 41. The connector 54 projects outward from the other end of the cover 43 so that wiring can be performed from the outside.

Further, as shown in FIG. 9, the light source unit 14 includes an elongated unit body (not shown) fitted and attached to the opening side of the fixture body 11, a light source 60 supported by the unit body, and the unit body. A translucent cover 61 or the like that covers the light source 60 is provided between the two.

A mounting spring mechanism (not shown) that is engaged with each mounting bracket 24 of the fixture body 11 to urge and mount the light source unit 14 to the fixture body is attached to the unit body.

The light source 60 is, for example, a light emitting module 62. The light emitting module 62 includes an elongated substrate 63 and a light emitting element 64 mounted on the substrate 63. As the light emitting element 64, for example, a surface mount type LED or the like is used, but other light emitting elements such as an organic EL may be used.

The light emitting module 62 of the light source unit 14 is connected to the power supply device 13 by a wiring (not shown). As for the wiring, the connector at the tip is connected to the connector 54 of the power supply device 13.

Then, in order to connect and assemble the terminal block 12 and the power supply device 13, the terminal block 12 is terminally connected with the second surface 30b of the terminal block main body 30 facing one end side of the case 40 of the power supply device 13. Place it on the base mounting part 49. Move the terminal block 12 closer to one end side of the case 40 along the terminal block mounting part 49, and move the terminal storage part 35 protruding from the second surface 30b of the terminal block body 30 from one end side of the case 40 to the case. Insert within 40.

As a result, each board-side terminal 52 erected on the circuit board 41 in the case 40 is inserted into each groove 36 of the terminal storage portion 35 and is inserted into each terminal block side terminal 31 in each groove 36. .. In the terminal block side terminal 31, the board side terminal 52 is inserted between the pair of contact piece portions 31a, and the pair of contact piece portions 31a are crimped from both sides of the board side terminal 52 and electrically connected.

Even after the terminal block side terminal 31 and the board side terminal 52 are connected, if the terminal block 12 continues to move so that the terminal block 12 approaches one end side of the case 40, the second surface 30b of the terminal block main body 30 Abuts on the case edge 40a of the case 40, and the movement of the terminal block 12 is restricted.

At this time, the distance A between the second surface 30b of the terminal block main body 30 and the case edge 40a of the case 40 faces the opposite portion of the terminal block main body 30 facing the substrate side terminal 52, that is, the terminal block storage portion 35. The distance between the facing portion 35a, which is the inner surface on the inner surface of the groove portion 36 of the above, and the substrate side terminal 52, is smaller than the facing distance B. Therefore, when the terminal block 12 is assembled to the power supply device 13, the facing portion 35a on the terminal block main body 30 side does not come into contact with the board side terminal 52, and an unreasonable load is not applied to the board side terminal 52.

The connected terminal block 12 is fixed to the terminal block mounting portion 49 of the case 40 with screws 34.

Further, the power supply device 13 in which the terminal block 12 is assembled is attached to the instrument main body 11 with the terminal block 12 facing the wiring hole 23.

Further, in order to install the lighting fixture 10 on an installation surface such as a ceiling, the power line and the electric wire such as the signal line and the feed wire drawn from the installation surface are pulled into the fixture from the wiring hole 23 of the fixture main body 11 and the fixture is installed. Fix the main body 11 to the installation surface. The electric wire drawn into the appliance is inserted into the corresponding electric wire insertion hole 32 of the terminal block 12 and connected to the electric wire connection terminal. The light source unit 14 and the power supply device 13 are connected by wiring, and the light source unit 14 is attached to the instrument main body 11 by a mounting spring mechanism.

Then, when the electric wire is inserted and connected to the electric wire insertion hole 32 of the terminal block 12, the terminal block 12 is pushed from the electric wire insertion direction, and the terminal block main body 30 and the bottom plate portion 44 of the case main body 42 to which the terminal block main body 30 is attached are attached. May bend and the terminal block 12 may move.

When the terminal block 12 moves in the wire insertion direction, the second surface 30b of the terminal block main body 30 comes into contact with the case edge 40a of the case 40, and the movement of the terminal block 12 is restricted.

At this time, the distance A between the second surface 30b of the terminal block main body 30 and the case edge 40a of the case 40 faces the opposite portion of the terminal block main body 30 facing the substrate side terminal 52, that is, the terminal block storage portion 35. The distance between the facing portion 35a, which is the inner surface on the inner surface of the groove portion 36 of the above, and the substrate side terminal 52, is smaller than the facing distance B. Therefore, even if the terminal block 12 moves in the wire insertion direction when the electric wire is inserted into the terminal block 12, the facing portion 35a on the terminal block main body 30 side does not come into contact with the board side terminal 52, and the board side terminal 52 cannot be reached. No heavy load is applied.

Further, when an external power source such as an AC power source is supplied to the power supply device 13 through the terminal block 12, the power supply device 13 converts the external power source into a predetermined lighting power source such as a DC power source and supplies it to the light emitting module 62 to supply the light emitting element. 64 lights up.

Then, in the lighting fixture 10 of the present embodiment, the distance A at which the second surface 30b of the terminal block main body 30 and the case edge 40a of the case 40 face each other is such that the terminal block main body 30 faces the substrate side terminal 52. Assembling the terminal block 12 to the power supply device 13 because the portion, that is, the opposite portion 35a, which is the inner surface of the groove portion 36 of the terminal block storage portion 35, and the substrate side terminal 52 face each other, are smaller than the distance B. At the time or when the electric wire is inserted into the terminal block 12, the facing portion 35a on the terminal block main body 30 side does not come into contact with the board side terminal 52, and an unreasonable load is not applied to the board side terminal 52. Therefore, although the board-side terminal 52 is solder-connected to the circuit board 41, an unreasonable load is not applied to the soldered portion, and the occurrence of poor connection can be prevented.

Further, since the board-side terminal 52 of the power supply device 13 has at least three or more legs 53 and is soldered and connected to the circuit board 41 by these legs 53, the connection strength to the circuit board 41 should be ensured. Can be done.

Further, since the board-side terminal 52 of the power supply device 13 is provided in a plate shape and the terminal block-side terminal 31 of the terminal block 12 is composed of a leaf spring and is housed in the terminal storage unit 35, the power supply device The configuration of the 13 circuit boards 41 can be simplified.

If the terminal block side terminal 31 of the terminal block 12 and the board side terminal 52 of the power supply device 13 can be directly connected, for example, the structure of the terminal block side terminal 31 and the terminal storage portion 35 is provided on the circuit board 41 side. , The structure of the terminal 52 on the terminal side may be provided on the terminal block 12 side.

Further, since the width and height of the terminal block main body 30 are wider and higher than the width and height of the case edge 40a of the case 40, the movement of the terminal block 12 can be reliably regulated by the case edge 40a, but the terminal block If the second surface 30b of the main body 30 faces the case edge 40a of the case 40, the width of the terminal block main body 30 may be wider than the width of the case edge 40a of the case 40, or the terminal block main body The height of 30 may only be wider than the height of the case edge 40a of the case 40.

If the terminal block 12 is attached to the case 40 so that the second surface 30b of the terminal block body 30 faces the case edge 40a of the case 40, the width and height of the terminal block body 30 can be changed to the case 40. It does not have to be wider or taller than the width and height of the edge 40a.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

10 Lighting equipment
12 terminal block
13 Power supply
30 Terminal block body
30a first side
30b second side
31 Terminal block side terminal
32 Wire insertion hole
35a Opposing site
40 cases
40a case edge
41 Circuit board
50 power circuit
51 Electronic components
52 Board side terminal
60 light source

Claims (3)

A case in which one end side is opened and one end side has a case edge;
It has a circuit board on which electronic components are mounted and a board-side terminal mounted on one end side of the circuit board, and is housed in the case and the board-side terminal is arranged on one end side in the case. With power circuit;
A terminal block main body having a first surface and a second surface opposite to the first surface and having an electric wire insertion hole on the first surface, and the second surface side of the terminal block main body. The second surface of the terminal block body is the case. The distance between the second surface of the terminal block main body and the case edge of the case facing the case edge portion is the distance between the opposite portion of the terminal block main body facing the substrate side terminal and the above. With a terminal block that is narrower than the distance between the terminals on the board side and facing each other;
A power supply unit comprising. The board-side terminal is projected onto the circuit board.
The power supply device according to claim 1, wherein the terminal block side terminal is connected by inserting the board side terminal. With a light source;
The power supply device according to claim 1 or 2, which supplies lighting power to the light source;
A lighting fixture characterized by being equipped with.

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