JPH04329202A - Lighting device - Google Patents

Abstract

PURPOSE:To convert the irradiation direction of the light of a lamp over a wide range having a constant extent. CONSTITUTION:A shaft 15 is supported freely to be inclined forward, backward, right and left. A lighting fitting 7 comprising a lamp 10 is fitted to the lower end of this shaft 15, and a first slider 25, which can reciprocate forward and backward, and a second slider 26, which can reciprocate right and left, are located vertically so as to be opposite to each other. Long holes 27, 28 prolonged in the direction at a right angle against the movement direction of the sliders 25, 26 are formed in these first and second sliders 25, 26 so as to be opposite to each other. The described shaft 15 is inserted through these long holes 27, 28, and this shaft 15 is inclined by the reciprocating movement of the described first and second sliders 25, 26 to convert the irradiation direction of the lamp 10.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device capable of converting the direction of light irradiation into various directions.

0002

[Prior Art] As this type of lighting equipment, Japanese Patent Application Laid-Open No. 63-
As seen in Japanese Patent No. 188814, a lighting device is known in which a lighting device including a lamp is provided so as to be rotatable around a single rotating shaft so that the direction of light irradiation can be changed.

0003

However, in such a conventional structure, since the lamp only rotates in a direction around one axis, there is a drawback that the conversion range of the direction of light irradiation is narrow.

[0004] The present invention has been made with attention to these points, and its purpose is to provide a lighting device that can change the direction of light irradiation over a wide range with a constant spread. It's about doing.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the present invention supports a shaft so that it can tilt forward, backward, left and right, and attaches a lamp equipped with a lamp to the lower end of this shaft, so that it can tilt forward and backward. A first slider capable of reciprocating in a direction and a second slider movable reciprocating in a left-right direction are arranged vertically facing each other, and each of the first and second sliders is provided at a right angle to the direction of movement thereof. The shaft is inserted into these long holes, and the shaft is tilted by the reciprocating motion of the first and second sliders. A recess is formed, an opening is formed at the upper end of the recess, a lamp having an outer peripheral surface corresponding to the curved surface of the recess and a lamp is provided in the recess, and a shaft is attached to the upper end of the lamp. and protrude upwardly from the opening;
A slide guide plate having an inner surface corresponding to the curved surface of the recess is attached to the shaft, the slide guide plate is brought into contact with the outer peripheral surface of the upper end of the recess to support the lamp within the recess, and the slide guide plate is attached to the shaft. A plate is brought into pressure contact with the outer circumferential surface of the recessed portion by a plate spring, and in this state, the shaft is tilted forward, backward, left and right.

[0006]

[Operation] When the shaft tilts back and forth, the direction of irradiation by the lamp of the lamp is changed back and forth, and when the shaft tilts left and right, the direction of irradiation by the lamp of the lamp is changed back and forth. Therefore, by selecting the angle of inclination of the shaft in the front, back, left, and right directions, it is possible to set the position of the lamp's irradiation direction at any point within a rectangular range with a sufficiently large extent below the lighting fixture. .

[0007]

Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

A first embodiment is shown in FIGS. 1 to 6. In the figures, 1 is a chassis, and a shade 2 is attached to the lower surface of the chassis 1. Annular fluorescent lamps 3, 3 are disposed on the lower surface of the chassis 1, and a frame 4 is horizontally attached to the center of the lower surface of the chassis 1.

As shown in FIGS. 2 and 3, a recess 5 having a substantially hemispherical shape is formed on the lower surface of the frame 4. An opening 6 is formed at the upper end of the recess 5, and an opening 6 is formed inside the recess 5. A lamp 7 is provided. This lamp 7 has a reflective lamp 10 housed inside a substantially spherical cover 9 having an opening 8 on the lower surface. Specifically, a socket 11 is provided on the inside upper part of the cover 9, a reflective lamp 10 is attached to the socket 11, and a light emitting part 10a at the lower end of the lamp 10 projects downward from the opening 8 of the cover 9. It is supported to do so. The lower end of the lamp 7 is exposed below through an opening 12 formed in the center of the shade 2.

A hollow shaft 15 having a substantially square cross section is attached to the upper end surface of the cover 9.
protrudes upward through the opening 6 of the recess 5, and the slide guide plate 1 is attached to the shaft 15 at this protruding portion.
6 is installed. This slide guide plate 16 is formed into a spherical shape with a curvature corresponding to the recess 5, and this slide guide plate 16 comes into slidable contact with the outer peripheral surface of the upper end of the recess 5, and this contact allows the lamp 7 to contact the outer peripheral surface of the upper end of the recess 5. It is supported within the recess 5 with a slight gap 17 between it and the inner peripheral surface of the recess 5 .

A plurality of leaf springs 20 are evenly attached to the inner surface of the frame 1 so as to be located around the outer periphery of the recess 5, and these leaf springs 20 cause the slide guide plate 1 to
6 is elastically pressed against the outer peripheral surface of the upper end of the recess 5 with appropriate pressure.

Furthermore, the inner surface of the frame 1 is provided with the recess 5.
A plurality of columns 21 are vertically provided evenly around the outer circumference of the column, and a support plate 2 is attached to the upper end of these columns 21.
2 are installed horizontally, and guide grooves 23..., 24 are provided in upper and lower two stages on the outer periphery of the middle part of these supports 21..., respectively.
...is being formed. As shown in FIG. 4, a pair of first and second sliders 2 are installed inside these pillars 21.
5 and 26 are arranged so as to be vertically overlapped.

The first slider 25 on the upper side is horizontally supported by having its both side edges slidably fitted into the guide grooves 23 on the upper stage side of the pillars 21, and the second slider 26 on the lower side is supported horizontally. Its both side edges are slidably fitted into the lower guide grooves 24 and supported horizontally, allowing the first and second sliders 25 and 26 to slide in directions perpendicular to each other. ing. Elongated holes 27 and 28 are formed in the first and second sliders 25 and 26 so as to face each other in a direction perpendicular to the sliding direction, and the intersection of these elongated holes 27 and 28 The shaft 15 is inserted into the space from below to above. A lead wire 29 for supplying electricity to the lamp 10 is inserted into the shaft 15.

A pair of motors 3 are mounted on the upper surface of the support plate 22.
0, 31 are attached between the rotating shafts 30a, 31a of these motors 30, 31 and the sliders 25, 26, and the rotational force of the rotating shafts 30a, 31a is transferred to the sliders 25, 31.
Crank mechanisms 32 and 33 are provided for transmitting information to 26 and reciprocating the movement.

As shown in FIG. 5, a power cord 36 is led out from the top surface of the chassis 1 through a cord holder 35, and a hook ceiling 37 is provided at the tip of the power cord 36. A power cord 36 is detachably connected to a ceiling surface 38 in the room through the power cord 36. A cylindrical sealing cover 4 is attached to the outer periphery of the power cord 36.
0 is vertically movably locked via locking pieces 41, and furthermore, a decorative tube 42 is locked to the outer periphery of this ceiling cover 40 via locking pieces 43 so as to be vertically movable.

Then, the hook ceiling 37 of the power cord 36 is connected to the ceiling surface 38, and the ceiling cover 4 is connected to the ceiling surface 38.
After pushing up the power cord 36 upward and bringing its upper end into contact with the ceiling surface 38, as shown in FIG. If the decorative tube 42 is pulled down and brought into contact with the upper surface of the chassis 1, the lighting device can be supported like a so-called pendant, and as shown in FIG. 6(B),
By adjusting the cord holder 35 to shorten the length of the power cord 36 led out from the chassis 1, and by placing the decorative tube 42 between the ceiling cover 40 and the top surface of the chassis 1, the lighting fixture can be installed in a so-called direct-mounted manner. can be supported.

As shown in FIG. 1, a remote control receiving section 45 is provided in a part of the shade 2. As shown in FIG. A remote control transmitter 46 is provided for sending a predetermined signal to this remote control receiving section 45.
, 3, 10, operation buttons 47a, 4 for dimming operation
7b and operation buttons 48a and 48b for drive control of the motors 30 and 31 are provided.

[0018] In the lighting fixture configured in this way,
When the remote control transmitter 46 is pointed toward the remote control receiver 45 and the operation button 48a is pressed, one of the motors 30 is activated and the rotating shaft 30a rotates, and this rotational force is transmitted to the first slider 25 via the crank mechanism 32. This first
The slider 25 reciprocates in the front-rear direction in FIG. By reciprocating the first slider 25 in the front and back direction, the shaft 15 inserted through the elongated holes 27 and 28 is
is pressed by both edges of the elongated hole 27, moves along the other elongated hole 28, and tilts back and forth.

The shaft 15 is supported by the contact between the slide guide plate 16 and the recess 5, so that the shaft 15
When the recess 5 is tilted, the slide guide plate 16 slides on the upper end surface of the recess 5. Since the lamp 7 is attached to the lower end of the shaft 15, the lamp 7 also inclines in accordance with the inclination of the shaft 15. Here, since the inner surface of the slide guide plate 16, the outer peripheral surface of the recess 5, and the outer peripheral surface of the lamp 7 have the same curved surface shape, the lamp 7 is tilted about the center point p of the lamp 7 shown in FIG. This inclination changes the irradiation direction of the lamp 10 in the front-back direction.

[0020] In this manner, when the lamp 7 is tilted at a desired angle with respect to the front-rear direction, the pressing operation of the operation button 48a is released. This causes the motor 30 to stop and the lamp 7 to be at its desired tilt angle.

Next, the other operation button 48b is pressed. In response, the other motor 31 starts to rotate the rotating shaft 31a, and this rotational force is transmitted to the second slider 26 via the crank mechanism 33.
6 reciprocates in the left-right direction in FIG. By reciprocating the second slider 26 from side to side, the elongated hole 27
, 28, the shaft 15 is pushed by both side edges of the elongated hole 28 while tilting in the front-rear direction, and the shaft 15 is inserted into one of the elongated holes 2.
7 and tilt left and right. Therefore, lamp 7
The lamp 10 also tilts left and right, and the irradiation direction of the lamp 10 in the left and right direction is changed. When the irradiation direction in the left and right direction of the lamp 10 is directed to a desired direction, the operation button 48
Cancel operation b. In response to this, the motor 31 is stopped and the lamp 7 is set at its desired tilt angle. Furthermore, in this state, if the one operation button 48a is operated, the lamp 7
The longitudinal inclination angle of can be changed again.

In this way, the lamp 7 can be tilted arbitrarily in the front-rear direction and the left-right direction, so that the lamp 10
The position in the irradiation direction can be determined at any point in a rectangular range with a sufficiently large extent below the lighting fixture.

By the way, although the lamp 7 tilts forward, backward, left, and right as described above, since the shaft 15 has a square cross section, the lamp 7 does not rotate around the shaft 15, and therefore the lamp When replacing the lamp 10 by rotating it relative to the socket 11, the rotation of the lamp 7 can be prevented and the work can be carried out efficiently.
Also, a lead wire 29 is placed inside the shaft 15 which does not rotate.
Since the lead wire 29 is inserted through the lead wire 29, there is an advantage that twisting of the lead wire 29 can be reliably prevented.

Note that, as shown by the chain line in FIG. 2, the lamp 7
The spherical lamp 10a may be arranged at the center point p of the lamp 7. In such a case, the lamp 10a is always arranged at a constant position regardless of the inclination of the lamp 7. Furthermore, in the above description, the motors 30 and 31 are operated alternately, but they may be operated simultaneously.

FIG. 7 shows a second embodiment of the present invention. In this second embodiment, a ball 50 is provided in the middle of the shaft 15, and this ball 50 is attached to a ball receiver 51 attached to the frame 4. A lamp 7 having a cover 9 and a lamp 10 is provided at the lower end of the shaft 15, and the shaft 15 is moved back and forth with the ball 50 as a fulcrum by the movement of the first and second sliders 25 and 26. It is designed to tilt left and right. Note that the ball 50, which serves as a fulcrum for tilting the shaft 15, may be placed above the sliders 25 and 26.

[0026]

[Effects of the Invention] As described above, according to the present invention, by selecting the angle of inclination of the shaft in the front, rear, left and right directions,
There is an advantage that the light of the lamp can be irradiated to any point within a sufficiently large area below the lighting fixture.

[Brief explanation of drawings]

FIG. 1 is a front view of a lighting fixture according to a first embodiment of the invention.

FIG. 2 is a cross-sectional view of the main parts of the lighting fixture.

FIG. 3 is a perspective view of the main parts in an exploded state.

FIG. 4 is a plan view of the main parts thereof.

FIG. 5 is a sectional view showing the support structure of the lighting fixture.

FIG. 6 is a front view showing the support form of the lighting fixture.

FIG. 7 is a cross-sectional view of the main parts of a lighting fixture according to a second embodiment of the invention.

[Explanation of symbols]

4...Frame 5...Concave part 6...Aperture 7...Lighting equipment 10...Lamp 15...shaft 16...Slide guide plate 20...Plate spring 25...First slider 26...Second slider 27...Long hole 28...Long hole

Claims (2)

[Claims] Claim 1: A shaft is supported so as to be tiltable in the front, back, right and left directions, and a lighting device including a lamp is attached to the lower end of the shaft, and a first slider that can reciprocate in the front and rear directions and a first slider can reciprocate in the left and right directions. and a second slider are arranged vertically facing each other, and elongated holes facing each other are formed in each of the first and second sliders in a direction perpendicular to the direction of movement thereof, and these elongated holes A lighting device characterized in that the shaft is inserted through the shaft, and the shaft is tilted by reciprocating movements of the first and second sliders. 2. A lamp comprising a substantially hemispherical recess formed on the lower surface of the frame, an opening formed at the upper end of the recess, an outer peripheral surface corresponding to the curved surface of the recess within the recess, and a lamp. A shaft is attached to the upper end of the lamp and projects upward from the opening, a slide guide plate having an inner surface corresponding to the curved surface of the recess is attached to the shaft, and the slide guide plate is attached to the upper end of the recess. The lamp is supported in the recess by being brought into contact with the outer peripheral surface of the recess, and the slide guide plate is pressed against the outer peripheral surface of the recess by a leaf spring, and in this state, the shaft is tilted back and forth and left and right. lighting equipment.