JPH0963346A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate assembling of a luminaire, and protect a pull string. SOLUTION: A base board installing body 36 is installed inside a chassis 22, and a circuit board 61 is installed on this base board installing body 36. A switch 62 is installed on an under surface of this circuit board 61. A cylindrical pull string leading-out part is arranged in the switch 62, and a pull string 69 is hung down from this pull string leading-out part. The pull string leading- out part is fitted to a switch fitting hole 91 of a reflecting plate 88. The switch 62 is fixed to the chassis 22 through a switch installing plate 78.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting fixture having a circuit board.

[0002]

2. Description of the Related Art Conventionally, for example, a lighting fixture 1 shown in FIG. 5 is known. The lighting fixture 1 includes a disc-shaped fixture main body 2 having an opened lower surface, and an insulating plate 3 and electronic components are arranged inside the fixture main body 2 to provide a circuit board 4 for electronic lighting.
Is stored. Also, on the lower side of the instrument body 2,
A switch 7 provided with a baby bulb socket 6 is attached via a switch support 5. Further, a lamp holder 8 and a lamp socket (not shown) are attached to the lower side of the fixture body 2, and an annular fluorescent lamp L is attached to the lamp holder 8 and the lamp socket. Further, a reflector 9 is attached to the lower side of the fixture body 2 via the lamp holder 8 so as to cover the lower surface of the fixture body 2, and the baby bulb socket 6 is attached to the lower side of the reflector plate 9. The baby bulb 10 and the operation piece 7a of the switch 7 that are mounted are projected.

On the other hand, a cord cover 14 having an open lower surface is attached to the upper surface, that is, the rear surface of the instrument body 2. Also, in the center of the cord cover 14, there is a power supply hole.
14a is formed, and in the power supply hole 14a,
A cord adjusting tool 15 having a cylindrical shape is attached. Then, connect the power cord W suspended from the ceiling surface to the power supply hole.
The instrument body 2 is suspended and supported at a predetermined height position by inserting the cord 14a and clamping and fixing it with the cord adjuster 15 at an appropriate position. Then, when the length of the power cord W is adjusted in this manner, the extra power cord W is stored inside the cord adjusting tool 15.

[0004]

However, in the above-mentioned conventional structure, unless the switch 7 and the reflector 9 are accurately positioned and attached to the instrument main body 2, the operation piece 7a of the switch 7 is not reflected by the reflector 9. It has a problem of easy sliding contact with.

The present invention has been made in view of the above points, and an object thereof is to provide a lighting fixture which can be easily and accurately assembled.

[0006]

A lighting fixture according to claim 1, wherein a fixture main body, a board mounting body mounted inside the fixture main body, a circuit board mounted on the board mounting body, and the fixture. A reflector attached to the bottom of the main body,
And an electrical component provided with an engaging portion that is attached to the circuit board and that engages with the reflector to position the reflector.

In this configuration, since the electric parts mounted on the circuit board mounted on the board mounting body are provided with the engaging portions for engaging and positioning the reflector, the appliance body and the electric parts are The reflector is easily and accurately positioned.

According to a second aspect of the present invention, in the lighting fixture according to the first aspect, the electric component is a switch, and the engaging portion is a drawstring lead-out portion through which the drawstring is drawn out.

In this construction, the instrument body, the switch and the reflector are easily and accurately positioned, and the drawstring does not come into sliding contact with the reflector.

A lighting fixture according to a third aspect of the present invention is the lighting fixture according to the second aspect, further comprising a connecting body for connecting the main body of the fixture and the switch.

In this structure, since the switch is supported by the main body of the instrument via the connecting body, the force for operating the drawstring is not applied to the circuit board.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of a lighting equipment of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 21 denotes a lighting fixture, which is hung and supported by a power cord W from a ceiling surface (not shown). It has a chassis 22 as.
And, in the central part of the upper surface (rear surface) of this chassis 22,
A recessed portion 23 protruding upward is integrally formed, and a circular hole-shaped insertion portion 24 through which the power cord W is inserted is formed at the center of the recessed portion 23. Further, a cord adjusting tool 26 as a fixing tool is fitted to the insertion portion 24. The cord adjuster 26 has a substantially cylindrical shape, and when the power cord W is moved upward, that is, the load of the lighting device 21 is applied to the power cord W, the power cord W is sandwiched between the chassis 22 and the power cord W. The power cord W is released so as to be movable with respect to the chassis 22 while fixing and while moving downward.

A stopper mounting portion 28 having a through hole is integrally formed on the upper surface of the chassis 22, and
A plurality of through holes 29 are formed. Further, on the side surface of the chassis 22, a plurality of heat dissipation holes 30 are provided at predetermined intervals along the entire circumference.
And a plurality of reflection plate mounting holes 33 are formed in the flange portion 32 protruding from the lower end portion of the chassis 22 to the outer peripheral side.

The power cord W has an inner wire W1 having a pair of core wires and an outer skin W2 that covers the inner wire W1 except for the vicinity of the tip, and the tip of the inner wire W1 has a connector. C is attached integrally.

Further, the power cord W has an outer skin W2.
A cord stopper S as a cord retainer is attached to a part of the cord. The cord stopper S has a plate shape that is folded back into a substantially U shape, and has a through hole and a screw hole that communicate with each other at the tip. Then, the screw 34 is inserted from the upper side into the through hole of the stopper mounting portion 28 of the chassis 22, and the screw 34 is inserted through the through hole of the cord stopper S and screwed into the screw hole to tighten the power cord W. It is adapted to be fixed at a predetermined position on the lower surface of the chassis 22.

Further, 36 is a board mounting body, and this board mounting body
The reference numeral 36 includes an attachment body 37 which is integrally formed of, for example, a synthetic resin having an insulating property and has a plate shape of a substantially octagonal plane. A substantially cylindrical wall portion 42 having a notch 41, that is, a substantially C-shaped planar wall 42, is integrally provided at the center of the upper surface of the attachment body 37 so as to project upward, and the notch portion is formed. A pair of locking claws located on the outside of 41 and facing upward
44 are projected integrally. Further, on the outside of the wall portion 42, a locking boss 45 having a locking portion at its tip and a mounting boss 46 having a screw hole at its tip are provided in a protruding manner. By engaging the chassis 22 and fixing the mounting boss 46 to the chassis 22 with the screw 47, the board mounting body 36 is fixed to the lower surface in a state of being housed inside the chassis 22.

In the state where the board mounting body 36 is mounted on the chassis 22 as described above, a cord housing portion 48 surrounded by a wall portion 42 is provided between the board mounting body 36 and the chassis 22.
Is formed, and an extra power cord W when the length of the power cord W is adjusted is stored in the cord storing portion 48.

Further, inside the wall portion 42 of the attachment body 37, a connector insertion portion 50 and a pair of attachment through holes 51 are formed. The connector insertion portion 50 has a substantially rectangular shape into which the connector C can be inserted, and at the lower portion of the connector insertion portion 50, a rectangular cylindrical elastically deformable connector holding portion is formed. A locking piece is formed, and a pair of locking receiving portions with which the connector C is engaged are formed on the locking piece.

From the four edges of the mounting body 37,
A pair of board mounting claws 55 are formed downward, respectively, and a cylindrical shape having a shorter length dimension than the board mounting claws 55 communicates with each mounting through hole 51 from the lower surface of the mounting body 37. The boss 56 of is projected. Furthermore, the mounting body 37
Heat dissipation holes 57 are formed near the three edges at predetermined intervals, and a switch heat dissipation hole 58 having a larger opening than the other heat dissipation holes 57 is formed on the other one. .

Further, in FIG. 1 to FIG. 3, 61 is a circuit board (PC board), on which electronic parts such as a switch 62 as an electric part are mounted for electronic lighting of the fluorescent lamp L. It constitutes the circuit of. Further, the switch 62 is attached to a substantially central portion of the circuit board 61, and is provided with a connector connecting portion 64 facing upward and having a pair of power source connecting pins to which the connector C of the power cord W is electrically connected. A baby bulb socket 67 for mounting a baby bulb 66, which is an incandescent bulb, is provided facing downward, and a drawstring lead-out portion (reflection plate guide portion) 68 as an engaging portion is provided.
Are provided integrally. Then, the draw string deriving unit 68
Has a substantially cylindrical shape, and a drawstring 69 is hung vertically downward from the inside.

On the other hand, the circuit board 61 is in the form of a plate having a substantially octagonal shape in plan view, and the lower surface near the edge portion and the edge portion has a board mounting member 36.
While being engaged and held by the board mounting claw 55, the upper surface thereof is brought into contact with the boss 56 to be positioned and held. Further, the circuit board 61 is provided with a connector through hole 75 facing the connector connecting portion 64 of the switch 62, and the connector C inserted into the connector inserting portion 50 of the board mounting body 36 from above is connected to the switch.
It is adapted to be connected to the connector connecting portion 64 of 62.
In addition, on the circuit board 61, a plurality of switch heat dissipation holes 77 are formed at predetermined intervals, adjacent to the switch 62 and communicating with the switch heat dissipation holes 58 of the board mounting body 36.

Further, as shown in FIG. 1, a switch mounting plate 78 as a connecting body is mounted between the chassis 22 and the board mounting body 36. The switch mounting plate 78 is formed by bending a metal plate into a crank shape and forming a screw hole in an upper plate portion 78a, and a lower plate portion 78b in which a through hole is formed and which has a larger length dimension than the upper plate portion 78a. , These upper plate part 78a and lower plate part 78
A connecting plate portion 78c that connects b and b is integrally formed. Then, the upper plate portion 78a of the switch mounting plate 78 is fixed to the chassis 22 by the screw 79 inserted from above into the through hole 29 of the chassis 22, and the lower plate portion 78b of the switch mounting plate 78 is
Insert the screw 80 inserted from the top into the through hole of this lower plate 78b.
Through the mounting through hole 51 of the board mounting body 36 and the through hole 61a formed in the circuit board 61, the screw hole 62 provided on the upper surface of the switch 62
The switch 62 is screwed to a and the switch 62 is firmly connected and fixed to the chassis 22.

A lamp socket 83 is electrically connected to the circuit board 61 via a plurality of lead wires 81. The lamp socket 83 has a socket portion 84 connected to the two annular fluorescent lamps L, and a pair of screw holes 85 is formed on the upper surface of the chassis 22.
The screws 86 inserted into the predetermined through holes 29 from above are screwed into these screw holes 85 and fixed to the lower surface of the chassis 22.

Reference numeral 88 is a reflector serving as a reflector. The reflector 88 has a bowl shape for covering the lower side of the chassis 22 and has a reflecting surface formed on the lower surface. Then, in the center of the reflection plate 88, a reflection plate recessed portion 89 is formed which is recessed in a cylindrical shape toward the upper side. And this reflector concave portion 89
Is located at the center, and the drawstring derivation unit 68 of the switch 62 is
A switch fitting hole 91 for engagement and positioning is formed. A plurality of heat dissipation holes 92 are formed in a substantially radial shape so as to surround the switch fitting hole 91, and a plurality of substantially arc-shaped covers are formed. The mounting groove 93 is formed concentrically. Further, a circular hole-shaped light bulb through hole 94 into which the baby light bulb 66 is inserted is formed in the reflection plate recessed portion 89.

Further, a flange portion 96 having substantially the same shape as the flange portion 32 of the chassis 22 is formed on the edge portion of the upper end of the reflector plate 88, and the flange portion 96 has a reflector plate mounting hole 33 of the chassis 22. Corresponding to, mounting holes 97 are formed on three sides.
Further, the reflecting plate 88 is provided with a lamp socket notch 98 extending from the flange portion 96 to the side portion so as to be fitted into the lamp socket 83.

The reflecting plate 88 has these mounting holes 97.
It is fixed to the lower surface of the chassis 22 by, for example, screwing a mounting screw to be inserted into the reflection plate mounting hole 33 of the chassis 22. The lamp holder 101 is also fastened and fixed to the mounting screws for fixing the reflector 88. Each of these lamp holders 101 is made of an elastically deformable leaf spring material or the like, and a pair of lamp holders 102 for elastically holding the fluorescent lamp L are formed.

Further, as shown in FIG. 1, the lower side of the reflection plate concave portion 89 of the reflection plate 88 is covered with a translucent bowl-shaped reflection plate cover 104. Further, the reflecting plate cover 104 is formed with heat dissipation holes 105 along the vicinity of the upper end portion at predetermined intervals, and mounting claws 106 are projectingly provided on three sides of the upper end portion. The reflector
It engages with the cover mounting groove 93 of 88 and is detachably attached to the reflector 88. Furthermore, this reflector cover 104
A through hole (not shown) through which the drawstring 69 is inserted is formed in the.

When assembling the lighting device 21, first, the insertion portion 24 of the chassis 22 and the cord adjusting tool 26.
The power cord W inserted through is temporarily fixed inside the chassis 22 by a cord stopper S. Next, the circuit board 61 is attached to the board mounting body 36, and the connector C of the power cord W is
Through the connector insertion portion 50 of the board mounting body 36, the circuit board 61
The switch 62 is connected to the connector connection portion 64. continue,
The board mounting body 36 is fixed to the chassis 22, and the power cord W in the chassis 22 is housed in the cord housing portion 48 formed between the board mounting body 36 and the chassis 22. Further, the lamp socket 83 is fixed to the chassis 22, and subsequently,
The reflector 88 is fixed to the chassis 22 together with the lamp holder 101. Then, the reflector cover 104 is attached to the reflector 88. Then, finally, the switch mounting plate 78 screwed to the switch 62 of the circuit board 61 is fixed to the chassis 22 from the upper surface of the chassis 22, and the assembly of the lighting fixture 21 is completed.

Then, in this state, the cord adjuster 26 is loosened, the power cord W is taken in and out from the chassis 22, the length is adjusted appropriately, and the hanging position of the lighting fixture 21 is adjusted appropriately. At this time, the surplus power cord W is stored in the cord storage portion 48 inside the chassis 22.

As described above, according to the present embodiment, since the power cord W can be stored in the cord storage portion 48 provided between the chassis 22 and the board mounting body 36 mounted inside the chassis 22, No need for a separate cord cover,
The number of parts can be reduced to reduce the manufacturing cost, and the height dimension of the lighting fixture 21 can be reduced, that is, the lighting fixture 21 can be thinned to reduce the transportation cost, the packaging cost, the storage cost, and the like.

Further, since the chassis 22 is integrally formed with the recessed portion 23 facing the cord housing portion 48 and facing upward, a large space for the cord housing portion 48 is secured and the same as when the cord cover is provided. By increasing the storage amount of the power cord W, the adjustment range of the height position of the lighting fixture 21 can be increased.

Further, since the switch 62 is directly attached to the circuit board 61 attached to the board mounting body 36, the number of parts such as the support member and the lead wire is reduced as compared with the configuration in which the switch 62 is attached through the support member. The manufacturing cost can be reduced and the lighting fixture 21 can be made thin.

Further, since the switch 62 is provided with the drawstring lead-out portion 68 which engages with the reflection plate 88 and is positioned, the chassis 22, the switch 62 and the reflection plate 88 can be easily and accurately positioned with respect to each other. The lighting fixture 21 can be easily assembled.

Then, the drawstring deriving section provided in the switch 62
Since the 68 is fitted in the switch fitting hole 91 of the reflection plate 88, the drawstring 69 does not come into contact with the reflection plate 88, and the position of the switch 62 does not shift due to deformation of the support member.
To prevent the drawstring 69 from slidingly contacting the reflector 88,
69 can be protected. Further, since the drawstring deriving unit 68 is provided integrally with the switch 62, the number of parts does not increase, and an increase in manufacturing cost can be suppressed.

Further, since the switch 62 is connected and fixed to the chassis 22 by the switch mounting plate 78 provided between the chassis 22 and the board mounting body 36, the switch 62 is firmly fixed to the chassis 22 via the switch mounting plate 78. Can support. Therefore, it is possible to protect the circuit board 61 by preventing the load applied when the drawstring 69 is operated from being applied to the circuit board 61 and preventing the circuit board 61 from being bent.

In addition, since the chassis 22 is formed with the recessed portion 23, the strength of the upper surface (rear surface) is improved. By attaching the switch mounting plate 78 in the vicinity of the recessed portion 23, the drawstring 69 It is possible to prevent the upper surface of the chassis 22 from being bent during the operation of.

The power cord W is guided by the cord stopper S attached to the stopper attaching portion 28 of the chassis 22, and the board attaching body 36 is provided with the wall portion 42 surrounding the cord accommodating portion 48. Therefore, the power cord W is guided, and when the lighting fixture 21 is assembled, the power cord W is prevented from being sandwiched between the chassis 22 and the board mounting body 36 or entangled with the power cord W. Code W
Can be smoothly stored in the cord storage portion 48.

The board mounting body 36 is provided with a locking claw 44 protruding from the outside of the wall 42, and a notch 41 is formed in the wall 42 so as to face the locking claw 44. Therefore, power cord W
In consideration of the length of the power cord W and the like, the power cord W in the chassis 22 is guided through the notch 41 to the locking claw 44 and folded back to guide and store the power cord W in an orderly folded state. can do. Therefore, when the lighting fixture 21 is assembled, the power cord W can be prevented from being pinched or entangled, and the power cord W can be stored and pulled out smoothly for adjusting the length.

Further, a connector C provided on the power cord W
Is inserted into the connector insertion portion 50 provided on the board mounting body 36 from above to be inserted into the connector through hole 75 formed in the circuit board 61 and electrically connected to the connector connection portion 64 of the switch 62. In addition, since it can be mechanically engaged with and held by the board mounting body 36, the power cord W bypasses the board mounting body 36 and the circuit board 61 and is connected to the switch 62 mounted on the lower surface of the circuit board 61. Compared with the above, the power cord W can be shortened, the manufacturing cost can be reduced, and wiring can be performed only from above the lighting fixture 21, so that the work efficiency of assembling the lighting fixture 21 can be improved.

As shown in FIG. 4, the switch mounting plate
The switch 62 may be fixed to the circuit board 61 with the screw 80 without using the 78. In addition, in this embodiment, the lamp sockets 83 are connected to one fluorescent lamp L, respectively.

[0042]

According to the luminaire of the first aspect of the present invention, since the electric parts mounted on the circuit board mounted on the board mounting body are provided with the engaging portions for engaging and positioning the reflector, The instrument body, the electrical component, and the reflector can be easily and accurately positioned, and can be easily assembled.

According to the lighting equipment of the second aspect, in addition to the effect of the first aspect, the electric component is a switch, and the engaging portion is a drawstring lead-out portion through which the drawstring is led out. The switch and the reflector can be easily and accurately positioned, and the drawstring can be prevented from slidingly contacting the reflector to protect the drawstring.

According to the lighting equipment of the third aspect, in addition to the effect of the second aspect, since the luminaire is provided with the connecting body for connecting the luminaire body and the switch, the switch can be supported on the luminaire body via the merging body. It is possible to protect the circuit board by preventing the force when the drawstring is operated from being applied to the circuit board.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a lighting fixture of the present invention.

FIG. 2 is a cross-sectional view of the lighting device.

FIG. 3 is a perspective view of a part of the lighting fixture in an exploded state.

FIG. 4 is an exploded perspective view showing another embodiment of the lighting fixture of the present invention.

FIG. 5 is a cross-sectional view of a conventional lighting fixture.

[Explanation of symbols]

 21 Lighting fixture 22 Chassis as fixture main body 36 Board mount 61 Circuit board 62 Switch as electrical component 68 Pull string lead-out part as engaging part 69 Pull string 78 Switch mounting plate as connector 88 Reflector as reflector

Claims (3)

[Claims] 1. An instrument body, a board attachment body attached to the inside of the instrument body, a circuit board attached to the board attachment body, a reflector attached to a lower side of the instrument body, An illumination device, comprising: an electric component attached to a circuit board and provided with an engaging portion that engages with the reflector to position the reflector. 2. The lighting device according to claim 1, wherein the electric component is a switch, and the engaging portion is a drawstring lead-out portion through which the drawstring is drawn out. 3. The lighting apparatus according to claim 2, further comprising a connecting body that connects the apparatus body and the switch.