JPH0877825A - Raising/lowering lighting fixture - Google Patents

Abstract

PURPOSE: To provide such a raising/lowering lighting fixture that turns into a whole lighting in the case of raising a lighting fixture main body and a local lighting in the case of lowering the lighting fixture main body. CONSTITUTION: A diffusion reflection board 13 is flexibly constituted so as to be turned into a whole lighting state where it is bent into such a V shape as lowering from both end sides to the center side and a local lighting state where it is bent into such an inverse V shape as lowering from the center side to both end sides. A raising/lowering mechanism 24 winds up an end part wire 23 much more compared with a center wire 22 so that the diffusion reflection board 13 is turned into the whole lighting state in the case of raising the lighting fixture main body 12 and the end part wire 23 is paid out more compared with the center wire 22 so that the diffusion reflection board 13 is turned into the local lighting state in the case of the lighting fixture main body 12 is lowered.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevating and lowering luminaire in which a luminaire main body can be raised and lowered.

[0002]

2. Description of the Related Art In a lighting fixture, a lamp 1 is conventionally exposed as shown in FIG. 6, and a diffuse reflection plate 2 is provided above the lamp 1.
There is a fixed ceiling type. In this case, once the lighting fixture is fixed to the ceiling or the like, the angle of the diffuse reflection plate cannot be changed, and since the lighting fixture is attached to the ceiling surface, it is difficult to replace the lamp 1.

Therefore, as an elevating and lowering luminaire in which the luminaire main body can be raised and lowered, as shown in FIG. 7, a reeler 5 for accommodating two wires 3 and 4 that can be drawn out is provided, and the wires 3 and 4 are pulleys 6. There is a configuration in which the direction is changed via 7 to be connected to the luminaire main body 8 and electric power is supplied to the luminaire main body 8 by the curl cord 9 which can be expanded and contracted.

[0004]

However, the conventional one is inconvenient because it can only raise and lower the luminaire main body 8 and cannot switch the illuminating range between general illumination and local illumination. That is, when the luminaire main body 8 is lowered, the illumination range of the luminaire is almost the same as when the luminaire main body 8 is raised. there were.

In view of the above problems, the present invention provides general lighting when the lighting fixture body is raised and local lighting when the lighting fixture body is lowered.

[0006]

A first technical means of the present invention for solving the technical problem is an illumination having a diffuse reflection plate 13 and a lamp 14 provided on the lower surface side of the diffusion reflection plate 13. An elevating and lowering luminaire including the luminaire main body 12 and vertically hanging the luminaire luminaire main body 12 with a wire, in which the diffuse reflection plate 13 is bent in a V shape so as to descend from both end sides toward the center side. General lighting conditions,
A central wire 22 configured to be freely bendable in a local illumination state in which it is bent in an inverted V shape so as to descend from the center side toward both ends, and the central wire 22 hanging down the central side of the diffuse reflector 13 and the diffuse reflector 13. End wires 23 for hanging down both end sides of the central wire 22 and the end wires 23 are raised to raise the lighting fixture main body 12 and the central wires 22 and the end wires 23 are fed out to fix the lighting fixture main body 12 An elevating mechanism 24 for descending is provided, and the elevating mechanism 24 winds up the end wire 23 more than the central wire 22 in order to bring the diffuse reflection plate 13 into the general illumination state when the lighting fixture body 12 is raised. , The end wire 23 is extended more than the central wire 22 so that the diffuse reflection plate 13 is locally illuminated when the lighting fixture body 12 is lowered. In that it is configured to.

The second technical means is that the diffuse reflection plate 13 is provided with a pair of diffuse reflection blade pieces 16, and the pair of diffuse reflection blade pieces 1 is provided.
6 is connected by a hinge 17 so as to be bendable. The third technical means is that the lifting mechanism 24 has a shaft 27.
And a motor 28 for rotating the shaft 27 around its axis, and a central drum 30 that is externally fitted and fixed to the shaft 27 to wind up the central wire 22 and externally fitted and fixed to the shaft 27 and an end wire 23 that can be freely drawn out. It is provided with a pair of end drums 31 to be wound up, and the diameter of the central drum 30 is smaller than the diameter of the end drum 31.

The fourth technical means is that the lamps 14 are attached to the lower surfaces of the pair of diffuse reflection blades 16 of the diffuse reflection plate 13, respectively. The fifth technical means is the lamp 14
A cord reel 33 for accommodating a power supply cord 34 for supplying power to the power supply is provided.

[0009]

When the luminaire main body 12 is raised, the diffuse reflection plate 13 is bent into a V-shape so as to descend from both ends toward the center, and the whole lighting is evenly illuminated. Further, when the luminaire main body 12 is lowered, the diffuse reflection plate 13 is in a local illumination state in which it is bent in an inverted V shape so as to descend from the center side to both end sides, and only a necessary portion is effectively turned on. Illuminate.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. In FIGS. 1 and 2, reference numeral 11 is a ceiling. 12
Is a main body of the lighting device, and the diffuse reflection plate 13 and the diffusion reflection plate 13
And a pair of lamps 14 provided on the lower surface side of the. As shown in FIGS. 3 and 4, the diffuse reflection plate 13 is provided with a pair of diffuse reflection blade pieces 16, and the pair of diffuse reflection blade pieces 16 are flexibly connected by a hinge 17. As a result, the diffuse reflection plate 13 is bent in a V shape so as to descend from both ends toward the center side, and in an inverted V shape so as to descend from the center side toward both ends. It is configured to be bendable depending on the local illumination state.

As shown in FIGS. 4 and 5, the diffuse reflection plate is provided by mounting the lamp sockets 18 on the lower surface of each diffuse reflection blade piece 16 and fitting the lamp (fluorescent lamp) 14 between the lamp sockets 18. 13 pairs of diffuse reflection wings 16
The lamps 14 are attached to the lower surfaces of the respective lamps. 22
Is a central wire that hangs down the central side of the diffuse reflection plate 13. As shown in FIG. 3, the lower end of the central wire is bifurcated and connected to the central hinge. Reference numeral 23 denotes an end wire that hooks both ends of the diffuse reflection plate 13, and a pair of left and right ends are provided. The lower end of each end wire 23 is connected to the center of the outer end of each diffuse reflection blade piece 16.

Reference numeral 24 denotes an elevating mechanism provided on the ceiling 11, which winds up the central wire 22 and the end wire 23 to raise the main body 8 of the luminaire, and pays out the central wire 22 and the end wire 23 to extend the main body 8 of the luminaire. It is configured to lower. The lifting mechanism 24 supports a shaft 27, a motor 28 that drives the shaft 27 to rotate about an axis through a gear head 26, and one end of the shaft 27 opposite to the motor 28 so as to be rotatable about the axis. Bearing 29, and a central drum 30 that is externally fitted and fixed to the shaft 27 to wind the central wire 22 freely.
And a pair of end drums 31 that are externally fitted and fixed to the shaft 27 and that wind up the end wire 23 so that the end wire 23 can be paid out. The diameter of the central drum 30 is formed smaller than the diameter of the end drum 31, whereby the lifting mechanism 24 winds up the end wire 23 more than the central wire 22 when the lighting fixture body 12 is lifted. The diffuse reflection plate 13 is set to the general illumination state, and when the lighting fixture body 12 is lowered, the end wire 23 is extended more than the central wire 22 so that the diffusion reflection plate 16 is locally illuminated. There is.

A cord reel 33 accommodates a power cord 34 for supplying electric power to the lamp 14 so that it can be drawn out. The cord reel 33 has a leaf spring inside, and the power cord 34 is automatically wound by the biasing force of the leaf spring.

[0014]

According to the present invention, when the luminaire main body 12 is raised, the diffuse reflection plate 13 is bent in a V shape so as to descend from both end sides toward the center side. The whole can be illuminated evenly. Also, the main body 1 of the luminaire
When 2 is lowered, the diffuse reflection plate 13 is in a local illumination state in which it is bent in an inverted V shape so as to descend from the center side toward both end sides, and it is possible to effectively illuminate only a necessary portion, and a lighting fixture. When the main body 8 is lowered, the inconvenience of illuminating even unnecessary places is eliminated.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a front view showing a state where the lighting fixture body is lowered.

FIG. 3 is a perspective view of the same lighting fixture body.

FIG. 4 is a perspective view of the luminaire main body in the lowered state.

5 is a cross-sectional view taken along the line AA of FIG.

FIG. 6 is a front view of a conventional lighting fixture.

FIG. 7 is a front view of a conventional lighting fixture.

[Explanation of symbols]

 12 Lighting Equipment Main Body 13 Diffuse Reflecting Plate 14 Lamp 16 Diffuse Reflecting Wing Piece 17 Hinge 22 Central Wire 23 End Wire 24 Lifting Mechanism 33 Cord Reel 34 Power Cord

Claims (5)

[Claims] 1. A luminaire main body 12 having a diffuse reflection plate 13 and a lamp 14 provided on a lower surface side of the diffusion reflection plate 13.
In a general lighting state in which the diffuse reflection plate 13 is bent in a V shape so as to descend from both end sides toward the center side And a central wire 22 which is configured to be bendable in a local illumination state in which it is bent in an inverted V shape so as to descend from the center side toward both ends, and a diffused reflection with a central wire 22 hanging down the central side of the diffuse reflection plate 13. Board 13
And an end wire 23 that hooks both end sides of
An elevating mechanism 24 is provided that winds up the central wire 22 and the end wire 23 to raise the luminaire main body 12 and extends the central wire 22 and the end wire 23 to lower the luminaire main body 12.
The end wire 23 is wound up more than the central wire 22 in order to put the diffuse reflection plate 13 into the general illumination state when the lighting fixture body 12 is raised, and the lighting fixture body 12
The vertical lighting fixture is characterized in that the end wire 23 is extended more than the central wire 22 so that the diffuse reflection plate 13 is locally illuminated when the light is lowered. 2. The diffuse reflection plate 13 includes a pair of diffuse reflection blade pieces 16, and the pair of diffuse reflection blade pieces 16 are hinges 17.
The lifting illuminator according to claim 1, wherein the lifting illuminator is flexibly connected by the. 3. The elevating mechanism 24 includes a shaft 27, a motor 28 for rotationally driving the shaft 27 around an axis, and a central drum 30 which is externally fitted and fixed to the shaft 27 and winds the central wire 22 so that the central wire 22 can be paid out. A pair of end drums (31) fitted and fixed to wind up the end wire (23) so that the end wire (23) can be drawn out freely is provided, and the diameter of the central drum (30) is formed smaller than the diameter of the end drum (31). The elevating lighting fixture according to 1 or 2. 4. The elevator lighting fixture according to claim 2, wherein the lamps 14 are attached to the lower surfaces of the pair of diffuse reflection blades 16 of the diffuse reflection plate 13, respectively. 5. The elevating and lowering illumination according to claim 1, further comprising a cord reel 33 for accommodating a power cord 34 for supplying electric power to the lamp 14 so that the power cord 34 can be paid out. Equipment.