JPH0799009A - Luminaire - Google Patents

Abstract

PURPOSE:To thin a luminaire, and facilitate mounting/ demounting work in situ. CONSTITUTION:A luminare main body 25 is detachably engaged with a hook ceiling 12 provided for a ceiling surface 11 via a mounting body 15 so as to be held thereon. A release button 22 is projected out of the lower surface of the mounting body 15, and engaging pawls 21 which appear/disappear while being interlocked with the release button 22, are projected out of the side surfaces of the mounting body 15. A light introducing body 31 in a plate shape is housed in the inside of the luminare main body 25 in such a way that it can be vertically slid. Fluorescent lamps L are mounted while being faced to each end face of the light introducing body 31 in its four directions. By this constitution, when the light introducing body 31 is drivingly pressed, the release button 22 is subsequently pressed by the light introducing body 31, and the engaging pawls 21 are retreated, so that the luminare main body 25 comes out of the mounting body 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting fixture in which a fixture main body is attached to a hook ceiling via an attachment body.

[0002]

2. Description of the Related Art Conventionally, a plate-shaped light guide is used, and light rays are incident from a fluorescent lamp installed adjacent to the end of the light guide to make the light guide emit light in a planar manner. Thin lighting fixtures are known.

When the lighting fixture is installed on the ceiling surface, after the fixture body is mounted on the ceiling surface, the light guide is attached to the fixture body, and further, the light guide is placed adjacent to the end of the light guide. A fluorescent lamp and a reflector for covering the fluorescent lamp are attached.

However, in order to efficiently and uniformly emit light from the light guide body, the light guide body, the fluorescent lamp, the reflector, etc. must be mounted at the correct positions on the main body of the fixture. Has a problem that it becomes complicated.

Further, conventionally, there is known a lighting fixture which uses a hook ceiling installed on a ceiling surface and mounts a main body of the fixture via an attachment body attached to the hook ceiling.

However, when the light guide is attached to the luminaire, since the attachment is covered with the light guide, it is difficult to operate the release button provided on the attachment, etc. It has the problem of being difficult.

[0007]

As described above, in a lighting device using a light guide, in order to make the light guide efficiently and uniformly emit light, the light guide, the fluorescent lamp, the reflector, etc. are provided in the main body of the device. However, there is a problem in that the installation work of the lighting fixture at the installation site becomes complicated, because it is necessary to mount it accurately. Also, when a light guide is attached to a lighting fixture to which the main body of the fixture is attached via the attachment attached to the hook ceiling, this attachment will be covered by the light guide, so the release button provided on the attachment etc. Is difficult to operate, and it is difficult to remove the instrument body.

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

[0009]

A lighting fixture according to claim 1, wherein the fixture main body is detachably engaged with and held by a hooking ceiling installed on a fixture mounting surface via an attachment body. A plate-shaped light guide body that is attached to the instrument body so as to be able to move forward and backward, a lamp that is arranged to face at least one end face side of the light guide body so that light can enter the light guide body, and It is provided with a release button facing the optical body and releasing the engagement between the mounting body and the instrument body.

According to a second aspect of the present invention, in the lighting fixture according to the first aspect, the release button is provided on the mounting body, and the mounting body is engaged with and disengaged from the main body of the fixture in conjunction with the release button. The mounting body side engaging portion is provided.

According to a third aspect of the present invention, in the lighting fixture according to the first aspect, the release button is provided on the main body of the instrument, and the release button is attached to and detached from the attachment body in association with the release button. The main body side engaging portion is provided.

According to a fourth aspect of the present invention, there is provided a lighting fixture in which a fixture ceiling is mounted on a fixture mounting surface, and the fixture main body is detachably engaged with the fixture ceiling through the fixture. A release button to release the engagement with
A plate-shaped light guide body which is attached to the instrument body and has a through hole facing the release button, and at least one end face side of the light guide body facing to allow light to enter the light guide body. And a lamp provided.

[0013]

In the luminaire according to the first aspect, the irradiation light from the lamp is guided in the plane direction by the light guide, and the light is uniformly irradiated from the irradiation surface of the light guide. Attach the mounting body to the hook ceiling,
By mounting the lighting fixture on this mounting body, the lighting fixture is installed on the fixture mounting surface. By pushing the light guide body attached to the instrument body so as to be able to move forward and backward, the release button is pushed through this light guide body, and the instrument body is detached from the attachment body.

In addition to the function of the first aspect, the lighting device according to the second aspect is provided with a release button on the mounting body. Therefore, by pushing the release button through the light guide body, the mounting body is mounted on the mounting body. The provided mounting body side engaging portion moves, the engagement between the mounting body and the fixture body is released, and the lighting fixture is removed from the mounting body.

According to the lighting equipment of the third aspect, in addition to the function of the first aspect, since the release button is provided on the main body of the illumination device, by pushing the release button through the light guide, the main body of the equipment is moved. The provided main body side engaging portion moves, the engagement between the attachment body and the fixture body is released, and the lighting fixture is removed from the attachment body.

In the luminaire according to the fourth aspect, the irradiation light from the lamp is guided in the plane direction by the light guide and is uniformly irradiated from the irradiation surface of the light guide. By mounting the mounting body on the hook ceiling and mounting the lighting fixture on the mounting body, the lighting fixture is installed on the fixture mounting surface. By operating the release button through the through hole of the light guide attached to the instrument body, the instrument body is detached from the attachment body.

[0017]

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

In FIGS. 1 and 2, reference numeral 11 denotes a ceiling surface as a device mounting surface, and a hook ceiling 12 is installed on the ceiling surface 11. The hook ceiling 12 has a substantially columnar shape, and an upper portion thereof is embedded in the ceiling surface 11 so that a protruding dimension from the ceiling surface 11 is small. Then, a pair of arc-shaped connection holes (not shown) are formed on the lower surface of the hook ceiling 12, and the connection metal fittings provided inside these connection holes are connected to the power supply line wired in the ceiling. There is. Further, a pair of hooking ears 13 and 13 formed by bending a metal plate are provided on both sides of the hooking ceiling 12.

Numeral 15 is a mounting body, which is an outer cylindrical body 16 having an open upper surface and an inner cylindrical body 17 having a lower surface which is fitted inside the outer cylindrical body 16 so as to be retractable. And have.

A pair of hook metal fittings 18, 18 having a substantially L shape are fixed to the inner cylindrical body 17, and these hook metal fittings 18, 18 are inserted into the connection holes of the hook ceiling 12. By rotating the mounting body 15, the mounting body 15 is mechanically engaged with and retained by the hooking ceiling 12 and is electrically connected to the power supply line.

On the other hand, the outer cylindrical body 16 of the mounting body 15 is provided with a pair of power supply holes on both sides which are opened on the lower surface, and the hooks 18 and 18 are electrically connected to the fittings provided inside these connecting holes, respectively. Connected to each other. Further, engaging claws 21, 21 as mounting body side engaging portions are provided on both sides of the outer tubular body 16 so as to project and retract, and a release button is provided on the lower side of the outer tubular body 16. 22 is projected. And this engaging claw
The upper side of each of the 21, 21 is a planar locking surface, the lower surface thereof is a slidable contact surface, and is biased in a direction projecting outward by a spring body (not shown). Further, a release button 22 is slidably brought into contact with the engaging claws 21, 21 inside the mounting body 15, and the engaging claws are pushed in a state of being pushed upward.
21 and 21 are set back toward the inside of the mounting body 15. The applicant of the present application has filed Japanese Patent Application No. 4-199951 for such a mounting body.

Numeral 25 is a box-shaped device body having a substantially square shape in a plan view. A mounting hole 26 into which the mounting body 15 is fitted is formed at a substantially central portion of an upper surface 25a of the device body 25. In addition, the lower surface portion 25b is formed with an irradiation opening 27 having a substantially square shape in a plan view, leaving the peripheral portion.

Inside the instrument body 25, a flat plate-shaped light guide 31 having a substantially square plane is housed. The light guide 31 is made of a transparent acrylic plate or the like, and a reflection sheet 32 is attached to the upper surface side. Furthermore, this light guide
A protective metal fitting 33 having a flat plate shape or a concave upper surface is provided at a substantially central portion of the upper surface of the mounting body 15 so as to face the release button 22 of the mounting body 15.

Further, lamp sockets 35 facing each other are attached to both ends in the longitudinal direction of the four end faces of the light guide 31, and the light guides are provided between the lamp sockets 35.
A straight tube type fluorescent lamp L facing each end face of 31 is mounted. Further, a reflector 36 having a substantially U-shaped cross section is attached to the four end faces of the light guide 31 so as to optically oppose each fluorescent lamp L, and the light beam emitted from each fluorescent lamp L is reflected. Light is allowed to enter the light guide 31 from each end face.

The light guide 31 having the reflector 36 and the like assembled therein is slidably fitted inside the instrument main body 25, and is normally in contact with the lower surface 25b of the instrument main body 25 for engagement. While being stopped, the reflector 36 can be moved upward while being pushed up from below.

Further, a lighting device 38 including an inverter device is attached to the lower surface of the upper surface 25a of the fixture body 25. The lighting device 38 is connected to each lamp socket 35 via an electric wire (not shown), and the lighting device 38 is connected to the pair of conductive connecting pieces 3 on both sides.
9 and 39 are projected. Also, these connecting pieces 39, 39
Is bent in a substantially U shape, and the mounting hole 26 at the center of the instrument body 25
To face.

Next, the operation of this embodiment will be described.

First, when installing the lighting equipment, the ceiling surface
Attach the mounting body 15 to the hook ceiling 12 of 11. Then
The hook ceiling 12 and the attachment hole 26 of the instrument body 25 are aligned with each other, and the instrument body 25 is pushed upward. Then,
The engaging claws 21, 21 of the mounting body 15 are slidably in contact with the peripheral edge of the mounting hole 26 and retreat, and the engaging claws 21, 21 project outward in a state of passing through the mounting hole 26, and the instrument body 25 The device main body 25 is mechanically engaged and held by contacting the lower surface side of the upper surface portion 25a of the device.
At the same time, the connection pieces 39, 39 of the lighting device 38 are inserted into the power supply holes opened on the lower surface of the mounting body 15, and are electrically connected to the connection fittings provided inside the connection holes, so that the power supply line is The lighting device 38 is electrically connected.

When the lighting device 38 is operated in this state to turn on the fluorescent lamp L, the light rays emitted from the fluorescent lamp L are reflected by the reflector 36 and enter from the end face of the light guide 31. It This light ray is guided in the plane direction of the light guide 31 while being reflected by the reflection sheet 32, and this light guide 31
Is uniformly irradiated from the lower surface of the.

Further, when the lighting equipment is removed, the light guide 31 is pushed upward, and the protective metal fitting 33 provided on the upper surface of the light guide 31 pushes the release button 22 of the mounting body 15. Then, the engaging claws 21, 21 of the mounting body 15 are retracted inward to release the engagement, and the instrument body 25 is removed from the mounting body 15. Further, the mounting body 15 is removed from the hook ceiling 12 by rotating it by a predetermined angle.

According to the lighting apparatus of this embodiment, the mounting body 15 is attached to the hook ceiling 12 and the apparatus body 25 is aligned and pushed up, so that the lighting apparatus can be installed directly on the ceiling surface 11 easily. it can. Further, by pushing up the light guide body 31, the release button 22 is indirectly pushed via the light guide body 31, and the instrument body 25 can be easily removed from the attachment body 15. Since the work at the installation site is simplified in this way, the work cost can be reduced.

Further, since the lamp socket 35 and the reflector 36 are preliminarily attached to the light guide 31 and there is no need to assemble them at the installation site, the fluorescent lamp L is attached to the light guide 31.
Can be positioned and installed in the optimum position. Therefore, the light guide 31 can efficiently and uniformly emit light, and variations in performance can be reduced.

Further, since the plate-shaped light guide 31 is used, the lighting fixture can be made thin. As shown in FIG. 3, when the hook ceiling 40 having a square or round shape and a large protruding dimension from the ceiling surface 11 is used, the inner cylinder body 17 of the mounting body 15 is housed inside the outer cylinder body 16. By doing so, the distance between the instrument body 25 and the ceiling surface 12 can be adjusted.

Further, in the embodiment shown in FIGS. 1 to 3,
Although the engaging claws 21, 21 and the release button 22 are provided on the mounting body 15, as shown in FIG. 4, the instrument body 41 is provided with engaging bodies 42, 42 as main body side engaging portions. Mount 42
44 to hold the instrument body 41 by engaging with the instrument body
By the release buttons 45, 45 provided on the 41, the engaging bodies 42, 42
Can be moved to remove the instrument body 41 from the attachment body 44.

That is, the engaging bodies 42, 42 of the instrument body 41
Is provided slidably along the upper surface side of the upper surface portion 41a of the instrument main body 41, and is urged by a spring body (not shown).
42a projects above the mounting hole 26.

The upper surfaces of the engaging pieces 42a, 42a are slidable contact surfaces, and when the mounting body 44 is aligned with the mounting hole 26 and pushed up, the annular flange portion of the mounting body 44 is pushed. 44a is in sliding contact with the engagement pieces 42a, 42a, and the engagement body 42,
42 moves outward, and the engaging pieces 42a 1 and 42a 2
The engagement piece portions 42a, 42a project inward in a state of overcoming the 44a, and the instrument body 41 is held by the engagement between the engagement piece portion 42a of the engagement body 42 and the flange portion 44a of the mounting body 44. It has become so.

The release buttons 45, 45 are slidably supported in the vertical direction and are urged downward by a spring body (not shown). Also,
Each of the release buttons 45, 45 has a slidable contact portion 45a formed on the upper end thereof and inclined downward toward the outside, and this slidable contact portion 45a is inserted into an elongated hole 42b formed in the engaging body 42. . Furthermore, at the lower end of the release buttons 45, 45,
A pressing portion 45b is formed, and the pressing portion 45b faces the protective fittings 47, 47 attached to the upper surface of the light guide 31. Then, by pushing up the light guide 31, the release buttons 45, 45 are pushed upward through the protective fittings 47, 47, and the slide contact portions 45a of the release buttons 45, 45 are pushed.
, 45a slidably contact the long holes 42b, 42b of the engaging bodies 42, 42 to retract the engaging bodies 42, 42 to the outside, and the engaging bodies 42, 42 and the mounting body.
The engagement with 44 is released, and the instrument body 41 can be removed.

Further, in the embodiment shown in FIGS. 1 to 4, the light guide 31 is slidably housed inside the instrument main bodies 25 and 41. However, the light guide 31 is formed by a spring body or a wire. It is also possible to suspend and support the instrument main body 25, 41.

Further, in the embodiment shown in FIGS. 1 to 4,
Although the light guide 31 and the lamp socket 35 and the like are supported so as to be vertically movable, it is also possible to support only the light guide 31 so as to be vertically movable, and only a part of the light guide 31 is supported so as to be vertically movable. You can also

Further, in the embodiment shown in FIGS. 1 to 4, the release buttons 22 and 45 are pushed through the light guide 31, but, for example, as shown in FIG. 5, the release button of the light guide 31 is released. It is also possible to form a through hole 51 in a portion facing the 22 and directly operate the release button 22 through the through hole 51 to release the engagement.

By disposing the release button 22 inside the through hole 51 of the light guide 31, the instrument main body 25 can be made even thinner.

When the through hole 51 is formed in the light guide body 31 as described above, it is possible to use a release button for releasing the engagement by pushing along the both sides of the instrument body 25.

[0043]

According to the luminaire of the first aspect, the irradiation light from the lamp can be guided in the plane direction by the light guide body, and can be uniformly irradiated from the irradiation surface of the light guide body. Since we used a light guide,
Lighting equipment can be made thinner. By mounting the mounting body on the hook ceiling and mounting the lighting fixture on this mounting body, the lighting fixture can be easily installed on the fixture mounting surface. By pushing the light guide attached to the instrument body so that it can move back and forth,
The instrument body can be easily removed from the attachment body by pressing the release button via the light guide.

According to the lighting device of the second aspect, in addition to the effect of the first aspect, since the mounting body is provided with the release button, the mounting body is pushed by pushing the release button through the light guide. The mounting body side engaging part provided in
The lighting fixture can be easily removed from the mounting body by releasing the engagement between the mounting body and the main body of the lighting fixture.

According to the lighting device of the third aspect, in addition to the effect of the first aspect, since the release button is provided on the main body of the luminaire, by pushing the release button through the light guide, the main body of the luminaire is pressed. The main body side engaging portion provided in the part moves to release the engagement between the attachment body and the fixture body, and the lighting fixture can be easily removed from the attachment body.

According to the luminaire of the fourth aspect, the irradiation light from the lamp can be guided in the plane direction by the light guide and can be uniformly irradiated from the irradiation surface of the light guide. Since the light guide is used, the lighting fixture can be made thin. By mounting the mounting body on the hook ceiling and mounting the lighting fixture on this mounting body, the lighting fixture can be easily installed on the fixture mounting surface. By operating the release button through the through hole of the light guide attached to the instrument body, the instrument body can be easily removed from the attachment body.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view showing the installed state of the lighting fixture.

FIG. 3 is a cross-sectional view of the lighting device in an exploded state using another hook ceiling.

FIG. 4 is a sectional view of an installed state showing another embodiment of the present invention.

FIG. 5 is a sectional view in an exploded state showing a further embodiment of the present invention.

[Explanation of symbols]

 11 Ceiling surface as equipment mounting surface 12, 40 Hooking ceiling 15 Mounting body 21 Engaging claws as mounting body side engaging portion 22, 45 Release button 25, 41 Instrument body 31 Light guide 42 Engagement as body side engaging portion Combined 51 through hole Fluorescent lamp as L lamp

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI technical display location F21V 21/02 101 NG02B 6/00 331 6920-2K

Claims (4)

[Claims] 1. A lighting fixture which detachably engages and holds an instrument main body with a hooking ceiling installed on an instrument attachment surface via an attachment body, and is a plate-like member which is attached to the instrument main body so as to be movable back and forth. A light guide body, a lamp arranged to face at least one end face side of the light guide body so that light can enter the light guide body, and a mounting body and an instrument body facing the light guide body. And a release button for releasing the engagement of the lighting device. 2. The release button is provided on a mounting body, and the mounting body is provided with a mounting body side engaging portion which is engaged with and disengaged from the instrument main body in association with the release button. The described lighting equipment. 3. The release button is provided on the instrument body, and the instrument body is provided with a main body side engaging portion that is engaged with and disengaged from the attachment body in association with the release button. The described lighting equipment. 4. A lighting fixture which detachably engages and holds an instrument body with a hooking ceiling installed on an instrument attachment surface via an attachment body, wherein the attachment body and the instrument body are disengaged from each other. A release button, a plate-shaped light guide attached to the instrument body, and having a through hole facing the release button, and a light guide facing at least one end face of the light guide. A lighting fixture, comprising: a lamp arranged so that light can enter.