JP5029287B2 - Elevating lighting fixture - Google Patents

Description

  The present invention relates to an elevating lighting fixture.

  For lighting fixtures attached to high ceilings in gymnasiums, auditoriums, theaters, etc., lamps with light sources such as lamps and fluorescent lamps can be raised and lowered to facilitate maintenance, inspection and lamp replacement on the floor. A so-called elevating lighting fixture provided may be used.

  In such an elevating lighting fixture, the lamp is lifted and lowered by hanging the lamp from a fixed frame attached to the ceiling with a plurality of wires and winding and winding the wire with a lifter provided on the fixed frame. . And normally, a lamp is accommodated in a fixed frame by hold | maintaining a wire in a winding state.

  By the way, in such a raising / lowering type lighting fixture, since the wire is comprised by the strand wire, when raising / lowering a lamp, a twist arises in a wire and a lamp is vibrated along a horizontal surface. In this case, when lowering the lamp, the lamp only vibrates in a wide space, so that no major problem occurs. However, a problem occurs when the lamp is raised and stored in the fixed frame.

  That is, when a plurality of lamps are arranged in a row as a light source provided in the lamp or a straight tube fluorescent lamp is used, the shape of the lamp shade is formed in a rectangular shape such as a rectangle in plan view. Thus, the fixed frame for storing the lamp is also formed in a square shape so as to match the shape. Therefore, when the lamp having such a shape is raised and stored in the fixed frame, when the lamp vibrates along the horizontal plane, each corner of the lamp abuts on the bottom of each side of the fixed frame. Cannot be taken up any more, and the lamp cannot be stored in the fixed frame, or an excessive load is applied to the lifter, resulting in a malfunction.

  As a countermeasure, in the prior art, a vibration suppression mechanism having a spring member that applies a turning force in a direction opposite to the vibration direction of the shade by pressing the ridge line portion of the rising lamp is provided, and the biasing force of the vibration suppression mechanism To suppress the vibration of the lamp (for example, see Patent Document 1 below), or provide a torsion detection switch for detecting the vibration of the lamp, and if the lamp is vibrating more than a predetermined amount, the torsion detection switch is turned on. The wire winding operation by the lifter is stopped, and when the vibration of the lamp falls below a predetermined amount due to this stop, the twist detection switch is turned off and the wire winding operation by the lifter is restarted (for example, the following (See Patent Document 2).

If the outer shape of the lamp is a disk shape, the fixed frame for storing the lamp is also formed in a circular shape so as to match the shape thereof, and there are no corners. It does not occur.
Japanese Utility Model Publication No. 60-71012 Japanese Utility Model Publication No.59-2013

  However, when a vibration suppression mechanism and a torsion detection switch are separately provided as in the conventional techniques described in Patent Documents 1 and 2, the structure becomes complicated and the cost is increased. Further, if the lamp is hung with a large number of wires, the vibration suppressing effect at the time of raising and lowering is enhanced, but the lifter mechanism is complicated and the cost is increased.

  The present invention has been made to solve the above problems, and when pulling up the lamp, the lamp is housed in the fixed frame reliably and automatically with a simple configuration without incurring an extra cost. An object of the present invention is to provide an elevating lighting fixture that can be used.

In order to achieve the above object, the present invention provides a fixed frame that is attached to a ceiling and provided with an opening below , a lamp that is accommodated through the opening , a wire that suspends the lamp, and the wire. In a lifting and lowering lighting fixture having a lifter for unwinding and winding, and a controller for controlling winding and winding of the wire by the lifter, the lamp has an outer shape formed in a shape other than a substantially disk shape. The configuration is adopted.

That is, in the present invention, a fixed frame provided with an opening below the ceiling attached to the ceiling, a lamp housed through the opening, a wire for hanging the lamp, and a lifter for unwinding and winding the wire And a controller for controlling the winding and winding of the wire by the lifter, wherein the lamp is an elevating type lighting fixture whose outer shape is formed in a shape other than a substantially disk shape, and either the fixed frame or the lamp A locking portion is provided on one side, and a mortar-shaped guide locking groove formed so as to gradually deepen from the periphery toward the center is provided in the other side to oppose the locking portion. The controller temporarily stops the winding operation of the wire by the lifter until the vibration of the lamp substantially stops immediately before a part of the lamp is housed in the fixed frame. Controls to restart the lifter after elapse, characterized in that the with increasing restart of the lamp, the locking portion along the shape of the locking groove is configured to slidably guided It is said.

According to a second aspect of the present invention, in the configuration of the first aspect of the present invention, one of the locking portion and the guide locking groove is made of a magnetic material, and the other is a metal magnetized by the magnetic material. It is composed of materials .

According to the first aspect of the present invention, the controller temporarily stops the winding operation of the wire by the lifter until the vibration of the lamp substantially stops immediately before a part of the lamp is stored in the fixed frame. Since the control for restarting the lifter is performed after a preset specified time has elapsed, the vibration of the lamp can be reduced in advance at a position immediately before the lamp is pulled up and stored in the fixed frame. For this reason, it is possible to securely and automatically house the lamp in the fixed frame with a simple configuration. Moreover, since the countermeasure can be taken only by control of the controller, it is automatically executed without incurring an extra cost, and the operator's extra effort can be saved. In addition, when the lamp rises to near the storage position of the fixed frame, the locking piece comes into contact with the guide locking groove and is locked, so that it can be more securely suppressed and stored in the fixed frame. It becomes. Furthermore, since the locking groove has a mortar shape, the swinging of the lamp can be suppressed against the horizontal swinging characteristic of the wire that is the hanging member, and can be stored more securely in the fixed frame.

According to the second aspect of the present invention, since the locking portion and the guide locking groove are a combination of a magnetic material and a metal material, vibration can be reduced more quickly by a magnetic force, and the lamp can be more reliably mounted. It can be stored in the fixed frame.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing a schematic configuration of an elevating lighting fixture according to an embodiment of the present invention, and FIG. 2 is a front view showing a main part of a lamp of the lighting fixture.

  The elevating lighting fixture in this embodiment performs a fixed frame 1, a lamp 2 that is moved up and down relative to the fixed frame 1, a pair of wires 3 that suspend the lamp 2, and unwinds and winds up these wires 3. The lifter 4 and a control panel 5 for performing unwinding and winding operation of the wire 3 by the lifter 4 are mainly configured.

  The upper part of the fixed frame 1 is embedded in the ceiling 6, while the lower part is opened downward, and the opening 7 is formed in a substantially rectangular shape so as to match the outer peripheral shape of the lamp 2. Has been. And the lifter 4 is provided in the upper part of the ceiling 6 embedding side of this fixed frame 1. Furthermore, two rod-like locking pieces 10 that are engaged with guide locking grooves 14 of a lamp 2 to be described later project from the fixed frame 1 at predetermined positions facing the opening 7.

  The lifter 4 includes a reversible rotation type motor and a drum (all not shown) connected to the motor. Each wire 3 is wound around the drum, and the lower end of each wire 3 is fixed to the lamp 2. Yes.

  Although the lamp 2 is not shown, a plurality of lamps are arranged in a line as a light source or a straight tube fluorescent lamp is used. For this reason, in this example, the outer shape of the shade 11 to which the light source is attached is a plan view. It is formed in a rectangle. However, since it is necessary to store the shade 11 of the lamp 2 through the opening 7 of the fixed frame 1, the outer shape of the shade 11 is the opening of the fixed frame 1 so that a slight clearance is generated between the both 7 and 11. It is formed in advance so as to be slightly smaller than the size of 7.

  Further, a substantially disk-shaped pedestal portion 12 is integrally provided on the upper portion of the shade 11, and a wire fixing portion 13 is integrally provided on the upper portion of the pedestal portion 12. A guide locking groove 14 that contacts and locks the locking piece 10 is recessed. The guide locking groove 14 in this case is formed in a mortar shape that gradually becomes deeper from the periphery toward the center. In addition, a lower end of the wire 3 is attached to the wire fixing portion 13 and a power cable 15 for supplying power to the light source of the lamp 2 is drawn out. The power cable 15 is electrically connected to the indoor wiring disposed on the ceiling 6. It is connected.

  The control panel 5 is provided with a descending switch 17 and an ascending switch 18 and has a controller 19 that controls the lifter 4 in accordance with the operation of these switches. The controller 19 includes, for example, a microcomputer, and by installing a predetermined control program in the microcomputer, the lifter 4 is activated in response to the operation of the lowering switch 17 and the wire 3 is unwound. The lifter 18 is activated in response to the operation of the lift switch 18 to wind the wire 3, and the lifter 2 until the vibration of the lamp 2 substantially stops immediately before part of the lamp 2 is housed in the fixed frame 1. 4 is configured to temporarily stop the winding operation of the wire 3 and to restart the lifter 4 after a predetermined time has elapsed.

  Next, in the elevating lighting fixture having the above-described configuration, a control operation by the controller 19 when the lamp 2 is pulled up will be described with reference to a flowchart shown in FIG. The controller 19 waits for the lift switch 18 to be turned on (S1), and when the lift switch 18 is turned on, activates the motor of the lifter 4 (S2). Thereby, the wire 3 is wound up and the ascending of the lamp 2 is started. At the same time, an internal timer is started (S3). Then, by measuring the elapsed time of the internal timer, the winding amount of the wire 3 is calculated, and it is determined whether or not the winding amount exceeds a preset reference value K1 (S4).

  At this time, if the winding amount exceeds the preset reference value K1, it is determined that the lamp 2 is at a position immediately before being inserted into the opening 7 of the fixed frame 1, and the controller 19 The motor is stopped (S5). At the same time, a predetermined stop duration T2 is set in the internal timer (S6). In this case, the stop continuation time T2 is set to an appropriate value by, for example, previously measuring the time until the vibration of the lamp 2 stops.

  Then, when the stop duration time T2 by the internal timer elapses (S7), it is estimated that the vibration of the lamp 2 is substantially stopped, so the controller 19 restarts the motor of the lifter 4 (S8). Thereby, the wire 3 is wound up again and the lamp 2 starts to rise. At that time, since the vibration of the lamp 2 has already been reduced, the corners of the shade 11 of the lamp 2 pass smoothly through the openings 7 of the fixed frame 1 without coming into contact with the sides of the fixed frame 1. Stored. When the lamp 2 reaches the top dead center in the fixed frame 1, a limit switch (not shown) provided at the top dead center is turned on (S9), and the controller 19 stops the motor of the lifter 4 according to this (S10). ).

  In the state immediately after the shade 11 of the lamp 2 is inserted into the opening 7 of the fixed frame 1, the lamp 2 may still vibrate slightly, but as the lamp 2 rises, the fixed frame 1 The locking piece 10 provided on the lamp 2 abuts on the guide locking groove 14 of the lamp 2 and slides along the groove 14 and is finally locked at the bottom of the groove 14, so that the Vibration is suppressed.

  As described above, in this embodiment, the controller 19 performs the winding operation of the wire 3 by the lifter 4 until the vibration of the lamp 2 substantially stops immediately before a part of the lamp 2 is housed in the fixed frame 1. Is temporarily stopped and the lifter 4 is restarted after the lapse of a specified time, so that the vibration of the lamp 2 can be reduced in advance at a position immediately before the lamp 2 is pulled up and stored in the fixed frame 1. For this reason, the lamp 2 can be accommodated in the fixed frame 1 reliably and automatically with a simple configuration. In addition, since the countermeasure can be taken only by the control of the controller 19, it is automatically executed without incurring an extra cost, and the operator can save extra time.

  Note that the following various modifications and application examples can be considered for the above-described embodiment.

  (1) In the embodiment, a pair of locking pieces 10 are provided, and accordingly, the guide locking grooves 14 are also provided at two locations of the lamp 2, but the locking pieces 10 and the guide locking grooves 14 are respectively provided. It can also be provided in only one place. Furthermore, the locking piece 10 is provided on the fixed frame 1 side and the guide locking groove 14 is provided on the lamp 2 side. Conversely, the locking piece 10 is provided on the lamp 2 side and the guide locking groove 14 is provided on the fixing frame 1. It is also possible to adopt a configuration provided on the side.

  (2) In contrast to the configuration of the above-described embodiment, a magnet, which is a magnetic material, is embedded in the vicinity of the bottom of the portion where the guide locking groove 14 of the base portion 12 of the fixing member is formed, and the locking piece 10 is magnetized with the magnet If the metal material is formed, both are attracted by the magnetic force, so that the vibration can be quickly reduced, and the lamp 2 can be securely stored in the fixed frame 1.

  (3) Although the shape of the shade 11 of the lamp 2 is a rectangle here, the present invention is not limited to this, and is applicable to a shape whose outer shape is other than a substantially disk shape, such as a square or a triangle. Is possible.

  (4) Here, the winding time of the wire 3 is calculated by the internal timer of the controller 19 to determine the stop point of the lifter 4. It is also possible to provide a sensor for detecting the amount, and to stop the motor until a specified time elapses by detecting a winding amount immediately before the lamp 2 is housed in the fixed frame 1. Alternatively, a sensor for detecting the distance between the lamp 2 and the fixed frame 1 is provided, and until the specified time elapses by detecting the distance between the lamps 1 and 2 immediately before the lamp 2 is stored in the fixed frame 1. It is also possible to stop it.

It is a perspective view which shows schematic structure of the raising / lowering type lighting fixture in embodiment of this invention. It is a front view which shows the principal part of the lamp | ramp of the same lighting fixture. It is a flowchart with which it uses for description of the raising control operation | movement of the lamp by the controller of the lighting fixture.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fixed frame 2 Lamp 3 Wire 4 Lifter 5 Control panel 6 Ceiling 7 Opening part 10 Locking piece 14 Guide locking groove 19 Controller

Claims (2)

A fixed frame having an opening disposed below to be attached to the ceiling, a lamp to be accommodated through the opening, and the wire hanging the lamp, a lifter for unwinding winding the wire, the wire by the lifter A controller that performs unwinding and winding control, and the lamp is an elevating type lighting device whose outer shape is formed in a shape other than a substantially disk shape,
A locking portion is provided on one side of the fixing frame and the lamp, and on the other side, a mortar-shaped guide mechanism formed so as to gradually deepen from the periphery toward the center against the locking portion. The stop groove is recessed,
The controller temporarily stops the winding operation of the wire by the lifter until the vibration of the lamp substantially stops immediately before a part of the lamp is housed in the fixed frame, and a preset specified time has elapsed. after controls to restart the lifter, the with increasing restart of the lamp, wherein configuration der Rukoto sliding guiding the locking portion along the shape of the locking groove Elevating lighting fixture. 2. The liftable illumination according to claim 1 , wherein one of the locking portion and the guide locking groove is made of a magnetic material, and the other is made of a metal material magnetized by the magnetic material. Instruments.

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