JPH0660938A - Luminaire - Google Patents

Abstract

PURPOSE:To fix a plug socket member to a small through hole provided in a ceiling board easily. CONSTITUTION:A pair of band-plate-like fixing members 35 are fitted to the upper end of a plug socket member 30, which is to be inserted to a through hole 11 of a ceiling board 10, under the condition that it is energized upward and freely to turn in the vertical direction. An operating member 38 is joined with a bolt member 37, which is extended upward from the plug socket member 30, with a screw, and the operating member 38 is lowered by the turning operation of the bolt member 37, and each fixing member is turned downward to pressure-contact the ceiling board 10. A contact member 80 fitted to the upper end of a connecting pipe 60 is inserted to the plug socket member 30, and supported freely to turn under the condition that it is electrically connected to the plug socket member 30. A lighting fixture 70 is fitted to the lower end of the connecting pipe 60 freely to turn.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a luminaire mounted on a mounting plate such as a ceiling.

[0002]

2. Description of the Related Art Conventionally, a lighting system called a duct rail system has been widely used for illuminating commercial spaces such as sales floors for displaying various products and show windows. In this duct rail system, for example, a pipe-shaped duct rail is provided on the ceiling, and a plurality of lighting devices are slidably and tiltably attached to the duct rail. Wiring for supplying power to each lighting fixture is inserted in the duct rail. It is fixed at a predetermined position on the duct rail, and by adjusting the tilt angle of each lighting fixture,
Illumination light is emitted from each lighting fixture to a desired position.

[0003]

In the mounting of the luminaire by the duct rail system, it is necessary to dispose the duct rail on the ceiling, and there is a problem that the duct rail impairs the appearance. In addition, since each lighting fixture is arranged only in a straight line along the duct rail, each lighting fixture is subject to layout restrictions and cannot be arranged along a curve or in a zigzag shape, limiting the lighting effect. There is.

The present invention solves such a problem, and an object thereof is to provide a luminaire capable of a layout capable of achieving an excellent illuminating effect without impairing the aesthetics of the illuminating space. It is in.

[0005]

The luminaire of the present invention is a luminaire which is attached to a mounting plate having a through hole, the lower end surface of which is open so as to be inserted into the through hole of the mounting plate. Has a hollow cylindrical shape, is connected to a power source when attached to the mounting plate, and is attached to a lower end portion of the outlet member, and is provided with a thread groove on an inner peripheral surface. A ring member and a base end portion are rotatably attached to the upper portion of the outlet portion so that the tip end portion comes into contact with the attachment plate by the downward rotation, and each is urged upward. A pair of fixing members, a bolt member extending upward from the upper end of the outlet portion, and the fixing members urged upward are in contact with each other, and the bolt members rotate to move in the vertical direction. Operation to move each fixing member up and down Member, a connecting pipe having a lamp attached to the lower end thereof, and an upper end portion of the connecting pipe that is inserted into the outlet from the lower end opening of the outlet portion and screwed into the thread groove of the ring member. And a contact member electrically connected to the outlet member on the upper part of the screw groove, the above-mentioned object being achieved.

[0006]

In the lighting equipment of the present invention, by inserting the outlet member into the through hole of the mounting plate and rotating the bolt member from the inserting direction, the operating member is moved and each pressing member is rotated. It Then, the outlet member is fixed to the mounting plate by pressing the tip of each pressing member against the mounting plate. By inserting the contact member attached to the upper end of the connecting pipe into the outlet member fixed to the mounting plate, screwing the thread groove of the contact member into the thread groove of the ring member, and then overcoming the thread groove. The contact member is rotatably attached to the outlet member.

[0007]

EXAMPLES Examples of the present invention will be described below. FIG. 1 shows a state in which the lighting fixture of the present invention is attached to the ceiling. The ceiling plate 10 to which the lighting fixture of the present invention is attached is provided with a through hole 11 having a diameter of, for example, about 50 mm.
The lighting fixture 20 of the present invention includes an outlet member 30 fixed to the ceiling plate 10 in a state where the through hole 11 is inserted, a hollow connecting pipe 60 detachable from the outlet member 30, and the connecting pipe 60. And a lamp 70 provided at the lower end of the lamp.

FIG. 2 shows the connecting pipe from the outlet member 30.
It shows the state where 60 is removed. The outlet member 30
Has an outlet main body 31 formed in a cylindrical shape from synthetic resin and located in the through hole 11 of the ceiling board 10. As shown in FIG. 3, a bracket 32 is attached to the upper surface of the outlet main body 31 by a pair of attachment screws 33 and 33. The bracket 32 is in the shape of a strip plate, and each end thereof is located on the outer peripheral surface of the upper portion of the outlet main body 31. Then, at each end of the bracket 32,
The support shafts 34 and 34 are respectively supported in a horizontal state, and the base end portion of the fixing member 35 having a strip plate shape on each support shaft 34 is
Each tip is attached so as to be vertically rotatable. The tip end of each fixing member 35 extends outward, and each tip end is biased upward by each coil spring 36 fitted to each support shaft 34.

A bolt member 37 extending upward is rotatably inserted through a central portion of the bracket 32, and the bolt member 37 has an operating member formed by bending a metal strip plate into a U-shape. 38 is screwed. The operation member 38 is bent so that each side portion extends downward, and the tip end portion thereof is in contact with each fixing member 35 biased upward by each coil spring 36. The operating member 38 is
By rotating the bolt member 37, the bolt member 37 is moved in the vertical direction, and when the operating member 38 is moved downward, the respective fixing members 35 abutted on the respective tip portions are rotated downward. It

A head of a bolt member 37 is fitted on the upper end of the hollow outlet main body 31. On the lower side of the upper end of the outlet main body 31 into which the head of the bolt member 37 is fitted,
A small-diameter hollow portion 31a is provided, and further, a large-diameter hollow portion 31b having a larger diameter than the small-diameter hollow portion 31a is provided on the lower side thereof. A U-shaped retaining ring 40 made of a conductive metal is attached to the inner peripheral surface of the upper small-diameter hollow portion 31a, and conductive to the inner peripheral surface of the lower large-diameter hollow portion 31b. A U-shaped retaining ring 41 made of a conductive metal is provided. Retaining rings 40 and 41 are connected to lead wires 42 and 43 (see FIG. 3) that pass through the outlet main body 31 respectively, and each of the lead wires 42 and 43 is, for example, a commercial power supply for a 12V lighting fixture. Is connected to a transformer to transform.

A ring member 55 is provided at the lower end of the outlet main body 31. The ring member 55 has a lower end protruding inward, and a thread groove 55a is provided on the inner peripheral surface protruding inward. The ring member 5
5 has an outer diameter similar to the outer diameter of the outlet main body 31, and its inner diameter is the inner diameter of the outlet main body 31 except for the portion where the thread groove 55a of the lower inner peripheral surface is provided. Is bigger than A cylindrical cap 50 is fitted to the ring member 55 and the portion of the outlet main body 31 excluding the upper portion. The cap 50 has a flange portion 50a at the lower end, and the flange portion 50a is abutted against the ceiling plate 10 to form a through hole provided in the ceiling plate 10.
It covers the bottom edge of 11.

A connecting pipe 60 connected to the inside of the outlet member 30 is made of, for example, aluminum, a contact member 80 is attached to an upper end portion thereof, and a lamp 70 is attached to a lower end portion thereof. . Contact member 80
Has a cylindrical first insulating portion 81 whose lower portion is fitted coaxially in the upper end portion of the connecting pipe 60. The first insulating portion
The upper portion of 81 extends above the connecting pipe 60, and the upper end thereof is closed. A cylindrical first contact portion 82 is fitted to the upper outer peripheral surface of the first insulating portion 81 extending upward from the connecting pipe 60. The first contact portion 82
Is made of a conductive metal, and a thread groove 82a is provided on the outer peripheral surface of the lower end portion thereof. The screw groove 82a
Is adapted to be screwed into a screw groove 55a on the inner peripheral surface of the lower end portion of the ring member 55 attached to the lower end of the outlet main body portion 31. In the middle of the first contact portion 82 in the vertical direction, when the screw groove 82a at the lower end is located in the upper portion of the ring member 55 beyond the screw connection with the screw groove 55a of the ring member 55, the outlet main body portion is formed. A groove portion 82b on the inner peripheral surface of which the lower retaining ring 41 is fitted is provided over the entire circumference. One lead wire 62 inserted through the inside of the connecting pipe 60 is electrically connected to the first contact portion 82.

The upper end of the first contact portion 82 is fitted to the lower end of the second insulating member 83 installed on the upper end of the first insulating portion 81 fitted to the connecting pipe 60. Then, the lower end of the cylindrical second contact portion 84 made of a conductive metal is disposed on the upper end of the second insulating member 83. The second contact portion 84 is fixed to the first insulating portion 81 together with the second insulating portion 83 by a conductive connecting bolt 85 screwed from the inside of the first insulating portion 81.
The connecting bolt 85 is electrically connected to the other lead wire 63 inserted through the connecting pipe 60. At the upper end of the second contact portion 84, when the groove portion 82b provided in the first contact portion 82 is fitted to the lower snap ring 41, the groove portion fitted to the upper snap ring 40 is formed. 84a is provided all around.

As shown in FIG. 1, the lamp 70 attached to the lower end of the connecting pipe 60 has a support pipe 73 that penetrates the peripheral surface of the lower end of the connecting pipe 60 in an orthogonal state. One end of the support pipe 73 extends inward of the connecting pipe 60, and the extending end is fixed to the connecting pipe 60 by a fixing nut 73a. One end surface 74a of a cylindrical tubular cover 74 is attached to the other end of the support pipe 73 extending outward from the connecting pipe 60 by a fixing nut 73b. A disc-shaped bracket 69 is attached between the end surface 74a of the tubular cover 74 and the connecting pipe 60, and an annular leaf spring 75 is provided between the bracket 69 and the end surface 74a of the tubular cover 74. It is installed. The annular leaf spring 75
Prevents the cylindrical cover 74 from freely rotating around the support pipe 73. A connecting tool 76 is attached to the inside of the cylindrical cover 74, and a spotlight type lamp body 77 is connected to the connecting tool 76. Lead wires 62 and 63, which are inserted through the connecting pipe 60, are electrically connected to the connecting tool 76 so as to energize the lamp body 77. A plurality of slits 78 are formed on the semi-circular surface of the cylindrical cover 74 on the side opposite to the connecting side of the lamp body 77. The lamp body 77 of the lamp 70 can rotate around the support pipe 73 within a range of 330 degrees that allows the twisting of the lead wires 62 and 63 within the tubular cover 74.

The operation of mounting the lighting fixture 20 on the ceiling plate 10 will be described. First, the outlet member 30 and the connecting pipe 60 to which the lamp 70 and the contact member 80 are attached are separated from the outlet member 30. Then, before fixing the outlet member 30 to the through hole 11 provided in the ceiling plate 10, the lead wire 42 extending from the outlet member 30.
And 43 to the transformer. Further, by rotating the bolt member 37, the operating member 38 is moved to the upper end portion of the bolt member 37, and the respective fixing members 35 are placed in a substantially vertical state (see the chain double-dashed line in FIG. 2). In this state, the outlet member 30 is inserted into the through hole 11 so that each fixing member 35 is located above the ceiling plate 10. Then, the driver is inserted through the lower end opening of the outlet main body 31 and the bolt member 37 is rotated. The operation member 38 screw-connected to the bolt member 37 is lowered by the rotation of the bolt member 37 in a predetermined direction, and is abutted to the respective tip members urged upward by the coil spring 36. Is rotated downward. Then, when the tip end of each fixing member 35 is pressed against the upper surface of the ceiling plate 10, the flange portion 50a of the cap 50 is pressed against the lower surface of the ceiling plate 10 around the through hole 11, and the outlet member 30 is closed. It is firmly fixed to 10.

When the outlet member 30 is fixed to the ceiling plate 10, a contact member provided on the upper end of the connecting pipe 60.
80 is inserted into the outlet main body 31. The first contact portion 82 of the contact member 80 is connected so that the screw groove 82a provided in the middle in the vertical direction is screwed to the screw groove 55a of the ring member 55 provided at the lower end of the outlet main body 31. The pipe 60 is rotated. As a result, the screw groove 82a of the first contact portion 82 and the screw groove 55a of the ring member 55 are screwed together. However, when the connecting pipe 60 is further rotated, the first contact portion 82 becomes larger than the outlet main body portion 31. The first contact portion 8 is inserted into the inner portion of the hollow portion 31b.
The second screw groove 82a rides over the screw groove 55a of the ring member 55 and the screw connection of the both is released. Then, in such a state, the groove portion 82 provided on the outer peripheral surface of the first contact portion 82.
b is fitted into the retaining ring 41 provided in the large-diameter hollow portion 31b of the outlet body 31, and the groove portion 84a of the second contact portion 84 is fitted in the retaining ring 40 provided in the small-diameter hollow portion 31a. It As a result, the first contact portion 82 and the second contact portion 84 are slidably supported and electrically connected by the retaining rings 41 and 40, respectively.
Therefore, the connecting pipe 60 is rotatable about its axis over 360 degrees, and the lead wires 62 and 63 in the connecting pipe 60 are reliably fed from the lead wires 42 and 43 of the outlet member 30. To be done.

The lamp 70 is a 360-degree lamp around the axis of the connecting pipe 60.
The irradiation direction of light can be directed to an arbitrary position by the rotation through the degree and the rotation through the support pipe which is orthogonal to the connecting pipe 60 over the 330 degrees.

As described above, in the lighting apparatus 20 of the present invention, the outlet member 30 can be fixed to the ceiling board 10 without using a duct rail as in the conventional case. Therefore, the plurality of lighting fixtures 20 can be arranged in a curved shape or a zigzag shape, and the flexibility of the layout of the lighting fixtures 20 is improved. Moreover, since the outlet member 30 is fixed in a state of being housed in the through hole 11 of the ceiling plate 10, the outlet member 30 does not project downward from the ceiling plate 10, so that the aesthetic appearance is not impaired and the lighting effect is improved. Help improve.

The present invention is not limited to the above-described embodiment. For example, the lamp body 77 of the lamp 70 is not limited to a spotlight type, but a hanging type pendant light can be used. Light fixture 70 to connection pipe 60 to 36
It is also possible to connect so that it can rotate over 0 degrees.

[0020]

As described above, the luminaire of the present invention has the outlet member inserted into the through hole provided in the mounting plate,
The outlet member is fixed to the mounting plate only by rotating the bolt member and rotating the fixing member downward. When the outlet member is inserted into the through hole, the fixing member is rotated upward, so that even the small through hole can be easily inserted through the through hole. Since the connecting pipe is rotatably attached to the outlet member, the illumination position can be changed very easily.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing an example of a lighting fixture of the present invention.

FIG. 2 is a vertical cross-sectional view showing a state in which an outlet member and a connection pipe in the lighting fixture are separated.

FIG. 3 is a plan view of the outlet member.

[Figure 4]

[Explanation of symbols]

 10 Ceiling plate 11 Through hole 20 Lighting fixture 30 Outlet member 31 Outlet body part 35 Fixing member 37 Bolt member 38 Operating member 40, 41 Retaining ring 50 Cap 55 Ring member 55a Screw groove 60 Connecting pipe 70 Lamp 80 Contact member 81 First insulation Part 82 first contact part 82a screw groove 82b groove part 83 second insulating part 84 second contact 84a groove part

[Procedure amendment]

[Submission date] March 29, 1993

[Procedure Amendment 1]

[Document name to be amended] Statement

[Name of item to be corrected] Figure 4

[Correction method] Delete

Claims (2)

[Claims] 1. A lighting fixture attached to a mounting plate having a through hole, the lighting device having a hollow cylindrical shape with an open bottom end so as to be inserted into the through hole of the mounting plate, An outlet member that is connected to a power source when attached to the mounting plate, a ring member that is attached to a lower end portion of the outlet member and has a thread groove on an inner peripheral surface, and a ring member that is rotated downward. A base end portion is rotatably attached to an upper portion of the outlet portion so that the tip portion abuts the attachment plate, and a pair of fixing members biased upward respectively, and the outlet portion of the outlet portion. An operating member that is in contact with a bolt member that extends upward from the upper end portion and each fixing member that is biased upward, and that moves vertically by rotating the bolt member and moves each fixing member vertically. When the lamp is attached to the bottom And a threaded groove that is screwed into the threaded groove of the ring member and is attached to the upper end of the connected pipe so as to be inserted into the socket from the lower end opening of the outlet. And a contact member provided on the upper part of the screw groove and electrically connected to the outlet member. 2. The outlet member further includes a pair of conductive retaining rings, which are arranged on the inner peripheral surface at appropriate intervals in the vertical direction and are connected to lead wires, respectively. The contact member has a pair of contact portions electrically connected to the respective retaining rings and connected to a pair of lead wires inserted into the connecting pipe and connected to the lamp. The luminaire described in.