JPH05128906A - Lighting device of direct ceiling mounting type - Google Patents

Abstract

PURPOSE:To provide a lighting device of direct ceiling mounting type, light in weight in its main body, easy to handle or easy in maintenance of its electric insulation. CONSTITUTION:A main body 1 is composed of an outer frame 3 having an opening 4 at its center and a metal chassis 2 fitted in the opening 4. At the lower face of the outer frame 3 a socket unit 10 having a plurality of socket parts 12 is mounted. At the circumferential part of the lower face of the outer frame 3 a supporting tool 42 serving as multiple support mechanisms is mounted. A shade 40 is mounted on the lower face of the main body 1 through these support tools 42.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-mounted luminaire mounted on a ceiling surface in a room.

[0002]

2. Description of the Related Art A lighting fixture of this type includes a fixture body (chassis) formed of a metal plate, and a plurality of sockets and lighting components such as an inverter and a ballast are attached to a lower surface of the fixture body. .. Then, this chassis is attached to the ceiling surface of the room, a plurality of fluorescent lamps are supported through the sockets, and in this state, a shade formed of synthetic resin is attached to the lower surface of the instrument body to cover the lower surface. ing.

[0003]

In such a luminaire, the body of the luminaire is considerably large, but conventionally, the body of the luminaire is formed of a single metal plate,
For this reason, the instrument body becomes heavy, which is inconvenient to transport and store, and the work for attaching the instrument body to the indoor ceiling surface is troublesome. Furthermore, since the instrument body is made of metal, a socket to be attached to the bottom surface of the instrument body There is a drawback in that the electrical insulation against must be strictly controlled.

The present invention has been made by paying attention to such a point, and an object of the present invention is to make the apparatus main body lightweight and easy to handle, and to easily control electric insulation to the socket. To provide a shaped lighting fixture.

[0005]

In order to achieve such an object, the present invention has an outer frame made of synthetic resin having an opening in the center and a metal frame fitted in the opening of the outer frame. A chassis is formed of a fixture body, a socket unit having a plurality of socket portions for supporting a lamp is attached to the lower surface of the outer frame of the fixture body, and a plurality of support mechanisms are provided on the peripheral portion of the lower surface of the outer frame. The shade is attached to the lower surface of the instrument body through these supporting mechanisms.

[0006]

[Function] Since the instrument body is composed of a metal chassis and a synthetic resin outer frame, the weight of the instrument body is greater than that of the conventional instrument body which is integrally formed of a metal chassis. Reduces the weight and makes it possible to handle the device body separately from the chassis and outer frame, which is convenient for transportation and storage, and is easy to install on the ceiling surface in the room. Since the socket unit is attached to the lower surface of the outer frame formed by, the insulation management on the electrical wiring of the socket unit with respect to the instrument body becomes easy.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 2, the instrument body 1 is attached to the ceiling surface a in the room. As shown in FIGS. 1, 3, and 4, the instrument main body 1 includes a chassis 2 formed of a metal plate and an outer frame 3 formed of a synthetic resin.

The outer frame 3 has a rectangular opening 4 at the center,
An insect repellent ring 5 is integrally formed inside the opening 4. The chassis 2 is fitted in the opening 4, and a circular fitting port 6 is integrally formed in the center of the chassis 2 so as to slightly project upward. And this fitting port 6
Is arranged inside the insect repellent ring 5, the fitting opening 6 is fitted to the outer periphery of the embedded hooking ceiling b provided on the ceiling surface a, and the engaging claws b1 and b1 of the hooking ceiling b are provided.
The instrument body 1 is supported on the ceiling surface a by this engagement.

As shown in FIG. 5, a plurality of protrusions 7 ... Are integrally formed on the upper surface of the outer frame 3, and the protrusions 7 ... Abut the ceiling surface a, whereby the upper surface of the instrument body 1 is formed. There is a slight gap 8 between the ceiling surface a and the ceiling surface a, and the upper edge of the insect repellent ring 5 is in close contact with the ceiling surface a by the elastic force of the chassis 2.

Socket units 10, 10 are attached to the lower surfaces of both sides of the outer frame 3 so as to face each other. These socket units 10, 10 are composed of a long box portion 11 formed of synthetic resin, and a plurality of socket portions 12 ... Formed integrally on the lower surface of the box portion 11 so as to project.

As shown in FIG. 6, the box portion 11
A terminal strip 13 formed by punching a conductive metal plate with a press is housed inside. As shown in FIG. 7, the terminal strip 13 has a pair of contact pieces 13a, 13 at predetermined intervals.
a is formed so as to stand at a right angle, and these contact pieces 13
a and 13 a are arranged in the socket portion 12. Then, a holding plate 14 made of synthetic resin and having a U-shaped cross section is housed in the box portion 11, and the terminal strip 13 is pressed by the holding plate 14.

As shown in FIG. 1, a plurality of engaging claws 17 ...
Further, a plurality of engaging holes 18 ... Corresponding to the engaging claws 17 ... Are bored in the outer frame 3, and the engaging claws 17 ... Are inserted into these engaging holes 18 ... And the engaging hole 18 ...
The socket unit 10 is attached and fixed to the lower surface of the outer frame 3 by engagement with. Then, the socket portion 12 of the socket unit 10 attached to one side portion of the outer frame 3 ...
, And a plurality of straight tube type fluorescent lamps 19 ... Are attached between the socket portion 12 of the socket unit 10 attached to the other side portion of the outer frame 3, and the connecting pins of these fluorescent lamps are connected to each socket portion. It contacts with the contact pieces 13a in 12 ... and becomes electrically conductive.

Instead of the pressing plate 14, as shown in FIG. 8, a convex portion 3a is formed on a part of the outer frame 3, and the convex portion 3a is projected into the box portion 11 of the socket unit 10. It is also possible to press the terminal strip 13 by pressing.

Connection parts 20, 20 are formed in the middle of the socket units 10, 10, and these connection parts 20, 20 are formed.
Between the inverter unit 21 and the switch unit 2
2 has been passed over. The inverter unit 21 is shown in FIG.
As shown in FIG. 10, the inverter case 23 accommodates an inverter 24 as a lighting component and a printed circuit board 25, and a predetermined circuit wiring 25a is printed on the printed circuit board 25. The switch unit 22 includes a switch mechanism 27 housed in a switch case 26, and a conductive plate 28 is connected to the switch mechanism 27.

As shown in FIG. 1, a plurality of engaging claws 30 are integrally formed on the upper edge portions of the inverter case 23 and the switch case 26, respectively.
Are provided with a plurality of engaging holes 31 ... Corresponding to the engaging claws 30. The engaging claws 30 ... Are inserted into the engaging holes 31. The inverter case 23 and the switch case 26 are supported on the lower surface of the chassis 2 by engagement with 31.

Steps 32 and 3 are respectively provided at opposite ends of the inverter case 23 and the switch case 26.
3 is formed, and these step portions 32 and 33 are engaged and connected so as to mesh with each other. A plurality of connection pins 34, ..., 35, which are electrically connected to the circuit wiring 25a, are provided at both ends of the printed circuit board 25. The connection pins 34, ... On one side of the connection pins 34, ... It enters the inside of the connection portion 20 in the socket unit 10 and elastically contacts the terminal strip 13 in the socket unit 10.

Connection pins 35 on the other side of the printed circuit board 25
Are projected from the step portion 32 of the inverter case 23, and these connection pins 35 enter the inside of the step portion 33 of the switch case 26 and elastically contact the conductive plate 28 of the switch mechanism 27. A plurality of connection pins 36 ... Are provided at the other end of the conductive plate 28. The connection pins 36 ...
Protrudes from the switch case 26, enters the inside of the connection portion 20 of the socket unit 10 on the other side, and elastically contacts the terminal strip 13 in the socket unit 10.

An energizing circuit for the fluorescent lamps 19 is constructed with such a structure, and the fluorescent lamps 19 are turned on and off by operating the switch mechanism 27 via the drawstring 29 shown in FIG. It is something that can be done.

Reference numeral 40 shown in FIG. 1 is a shade made of synthetic resin, and this shade 40 is formed in a flat box shape having a rectangular opening 41 at the upper end. A plurality of support tools 4 are provided as a support mechanism for supporting the shade 40 on the outer frame 3.
2 are attached to the peripheral portion of the lower surface of the outer frame 3.

These supporting members 42 are shown in FIGS.
As shown in, the base 4 screwed to the lower surface of the outer frame 3
3, a curved piece 44 extending in an arc shape extending downward from one edge of the base 43, and a support spring 45 rotatably attached to the lower surface of the base 43.

The support spring 45 is formed in a U shape by a wire, and a pair of arm portions 46, 46 on both sides of the support spring 45 are elastically expanded. And arm part 4
One end of 6, 46 is bent in an L shape, and the bent portions 47, 4
7 is inserted into support pieces 48, 48 provided on the lower surface of the base 43 so as to be rotatable and axially slidable.

An opening 50 is formed in the curved piece 44,
The support spring 45 is inserted through the opening 50. Both side edges of the opening 50 are slanted as slidable contact portions 51, 51 so as to narrow the gap therebetween from the upper side to the lower side, and the lower end portions of the arm portions 46, 46 of the support spring 45. Engaging grooves 52, 52 capable of engaging with each other are formed.

Inside the opening 41 of the shade 40, a plurality of engaging members 55 corresponding to the respective supporting members 42 are attached. The engagement tool 55 has an L shape having a vertical piece 56 screwed to the shade 40 and a horizontal piece 57 connected to a lower end edge of the vertical piece 56, and a rectangular opening 58 is formed in a lower portion of the vertical piece 56. Is cut out.

At the four corners of the lower surface of the outer frame 3, as shown in FIGS. 1, 3, 14, and 15, a plurality of guide pieces 5 for guiding the operation of the shade 40 when it is attached to the outer frame 3.
9a ..., 59b ... are provided so as to project downward. One guide piece 59a is formed so as to extend from the edge of the opening 4 of the outer frame 3, and the other guide piece 59a.
b ... are formed so as to integrally project from the side surface of the socket unit 10 attached to the lower surface of the outer frame 3.
As shown in FIGS. 14 and 15, the outer edges of the guide pieces 59a ..., 59b ... Are each formed in an arc shape. The one guide piece 59a may be formed so as to project from both ends of the socket unit 10 instead of extending from the edge of the opening 4 of the outer frame 3.

When attaching the shade 40 to the outer frame 3,
As shown in FIG. 11A, the support spring 45 of the support tool 42.
Is pulled down to elastically narrow the arm portions 46, 46 and to be locked in the engaging grooves 52, 52. The opening 41 of the shade 40 is opposed to the lower surface of the outer frame 3, and the shade 40 is pushed upward in this state.

In response to this push-up, the inner peripheral surface of the shade 40 contacts the outer edges of the guide pieces 59a, ..., 59b, and the shade 40 is guided to a predetermined position while being guided by the outer edges of the guide pieces 59a ,, 59b. And the engaging tool 5 provided on the shade 40 by such an operation.
The upper surface of the horizontal piece 57 of 5 is the support tool 4 provided on the outer frame 3.
It comes into contact with the tip of the second support spring 45.

The support spring 45 is pressed upward by this abutment, and the arm portion 4 of the support spring 45 is pressed by this pressing force.
6, 46 are disengaged from the engagement grooves 52, 52, and with this disengagement, the arm portions 46, 46 are opened by their elastic expansion force.
Are pressed against the sliding contact portions 51, 51 on both sides of.

Since the slidable contact portions 51, 51 are inclined so as to widen upward, the arm portion 4
6, 46 slide up on these sliding contact portions 51, 51 and ascend. That is, the support spring 45 rotates upward. This rotation causes the tip of the support spring 45 to move to the position shown in FIG.
As shown in FIG. 5, the engaging tool 55 enters the opening 58 and further abuts on the upper edge of the opening 58.

As described above, the tip of the support spring 45 abuts on the upper edge of the opening 58 of the engaging member 55, so that the elastic force of the support spring 45 supports the shade 40. The entire lower surface of is covered.

The instrument main body 1 is composed of a metal chassis 2 and a synthetic resin outer frame 3, so that the entire instrument main body is integrally formed of a metal chassis as in the prior art. In comparison, the weight is reduced and the weight is reduced, and since the instrument body 1 can be handled separately from the chassis 2 and the outer frame 3, it is convenient for transportation and storage, and the work for mounting on the ceiling surface a in the room is also performed. It will be easy. Further, on the lower surface of the outer frame 3 formed of synthetic resin, the socket unit 10,
Since 10 is attached, the insulation management on the electrical wiring of the socket units 10 and 10 with respect to the instrument body 1 becomes easy.

Since there is a gap 8 between the upper surface of the instrument main body 1 attached to the ceiling surface a in the room, small insects such as mosquitoes and flies may enter the gap 8, but Frame 3
An insect-repellent ring 5 is formed on the inner surface of the chassis 2. The insect-repellent ring 5 covers the outer periphery of the fitting opening 6 of the chassis 2, and the upper edge of the insect-repellent ring 5 is in close contact with the ceiling surface a. There is no fear that a small insect will enter the shade 40 through the fitting hole 6 of the second embodiment, and therefore there is no inconvenience that the inside of the shade 40 is contaminated with the small insect.
Can be kept clean for a long time.

By the way, as shown in FIG. 17, a three-lamp socket unit 10 having three socket portions 12 ...
a, a socket unit 10b for two lights having two socket portions 12 and 12, an inverter unit 21a for three lights, and an inverter unit 21b for two lights, these can be used. It is possible to construct lighting fixtures of various specifications.

That is, a pair of socket units 10a for 3 lamps and a socket unit 10b for 2 lamps are attached to the main body of the fixture one by one, and these socket units 10a,
Inverter units 21a and 2 for 3 lights for 10b
A lighting fixture for five lights can be configured by attaching the inverter unit 21b for the lights, and a pair of socket units 10a for the three lights are attached to the fixture body, and the inverter unit 21 for the three lights is attached to these socket units 10a.
If a is attached, a lighting fixture for three lights can be configured, and if a pair of socket units 10b for two lights are attached to the main body of the fixture and an inverter unit 21b for two lights is attached to these socket units 10b, two lights will be provided. Can be configured as a lighting device.

[0034]

As described above, according to the present invention, the weight of the instrument main body is reduced to reduce the weight, and the instrument main body can be handled separately from the chassis and the outer frame, and therefore, can be transported or stored. It is convenient and easy to attach the device body to the ceiling surface in the room. In addition, the socket unit is attached to the lower surface of the outer frame made of synthetic resin. There is an advantage that the insulation management of is easy.

[Brief description of drawings]

FIG. 1 is a perspective view showing an exploded state of a ceiling-mounted lighting fixture according to an embodiment of the present invention.

FIG. 2 is a side view of the lighting fixture.

FIG. 3 is a bottom view of a main body of the lighting fixture.

FIG. 4 is a cross-sectional view of a main body of the lighting device.

FIG. 5 is a perspective view of an outer frame of the lighting fixture.

FIG. 6 is a sectional view of a socket unit in the lighting fixture.

FIG. 7 is a side view of a terminal strip in the socket unit.

FIG. 8 is a cross-sectional view showing a modified example of the holding structure for the terminal strip.

FIG. 9 is a side view of an inverter unit and a switch unit in the lighting fixture.

FIG. 10 is a sectional view of the inverter unit and the switch unit.

FIG. 11 is a cross-sectional view of a support mechanism in the lighting fixture.

FIG. 12 is a perspective view of a support mechanism in the lighting fixture.

FIG. 13 is a plan view of a support spring of the support mechanism.

FIG. 14 is a front view of a bending piece of the support mechanism.

FIG. 15 is a front view seen from the direction of arrow A in FIG.

16 is a front view seen from the direction of arrow B in FIG.

FIG. 17 is a perspective view for explaining a modification of the usage pattern of the socket unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Instrument main body 2 ... Chassis 3 ... Outer frame 4 ... Opening 5 ... Insect-proof ring 6 ... Fitting port 10 ... Socket unit 59a ... Guide piece 50b ... Guide piece

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location // F21V 23/02 Z 23/04 A

Claims (3)

[Claims] 1. An instrument main body is constituted by a synthetic resin outer frame having an opening in the center and a metal chassis fitted into the opening of the outer frame, and the outer frame in the instrument main body. A socket unit having a plurality of socket portions for supporting the lamp is attached to the lower surface of the lamp, a plurality of support mechanisms are provided on the peripheral portion of the lower surface of the outer frame, and a shade is attached to the lower surface of the instrument body through these support mechanisms. A ceiling-mounted lighting fixture characterized by the following. 2. The ceiling-mounted lighting fixture according to claim 1, wherein the lower surface of the outer frame is provided with a guide piece for guiding the operation of the shade when it is attached to the main body of the fixture. 3. A chassis has a fitting opening formed at a central portion of the chassis, the fitting opening being fitted to an outer periphery of a hook ceiling provided on a ceiling surface of the room, and an insect-proof ring is provided inside an opening portion at a central portion of the outer frame. 3. The ceiling-mounted lighting fixture according to claim 1 or 2, wherein the insect-proof ring is formed so as to cover the outer periphery of the fitting opening and the upper edge thereof is in close contact with the ceiling surface in the room.