WO2012032928A1

WO2012032928A1 - Lighting device

Info

Publication number: WO2012032928A1
Application number: PCT/JP2011/068985
Authority: WO
Inventors: 山上　真司
Original assignee: シャープ株式会社
Priority date: 2010-09-07
Filing date: 2011-08-23
Publication date: 2012-03-15
Also published as: JP2012059455A

Abstract

In a pendant lighting device having a light source provided with a power supply system and two systems formed from a white LED and an incandescent bulb colored LED, power supply lines connected to an input terminal indicated by a plus sign (+) or an output terminal indicated by a minus sign (-) are shared. Thus, a lighting device in which the number of power supply lines supplying electric power to the light source can be reduced can be provided.

Description

Lighting device

The present invention relates to an illumination device including a light source including a plurality of power supply systems.

Conventionally, a lighting device (so-called pendant light) suspended from a ceiling by a wire has been widely used (for example, Patent Document 1). FIG. 16 is a view showing the lighting device described in Patent Document 1, (a) is a cross-sectional view of the lighting device, and (b) is an XX of an electric cord provided in the lighting device of (a). It is a line end view.

As shown to (a) of FIG. 16, the illuminating device 100 of patent document 1 suspends the illumination part (main body) 101 and the illumination part 101 from a ceiling, and supplies the electricity from a power supply to the illumination part 101. The electric cord 102 is provided. As shown in FIG. 16B, the electric cord 102 includes two

conductive wires

103 and 103 as power supply lines for supplying power to the illumination unit 101, and a support line that substantially supports the illumination unit 101. 104 and an insulator 105 that covers the

conductive wires

103 and 103 and the support wire 104. The supporting wire 104 is disposed between the two conducting

wires

103 and 103, and the conducting

wires

103 and 103 and the supporting wire 104 extend in the vertical direction.

Japanese Patent Publication “JP 2002-367423 A (published on December 20, 2002)”

However, the hanging type illumination device described in Patent Document 1 has a problem that the number of power supply lines increases when light sources of a plurality of power supply systems (hereinafter referred to as systems) are provided.

Specifically, since the lighting device 100 includes one system of the light source 106, two

conductors

103 and 103 connected to the input terminal and the output terminal of the light source are necessary. For this reason, for example, when two light sources 106 are provided, four conductive wires 103 are required. That is, when a plurality of light sources 106 are provided, the number of conducting wires 103 corresponding to twice the number of systems is required. Therefore, there is a problem that as the number of systems of the light sources 106 increases, the number of conducting wires 103 as power supply lines increases.

The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to provide an illumination device that can reduce the number of power supply lines that supply power to a light source.

An illuminating device according to the present invention is an illuminating device including an illuminating unit including a light source including a plurality of power supply systems and a power supply line that supplies power to the light source in order to solve the above-described problem. Among the light sources, any one of an input terminal and an output terminal of a light source including at least two power supply systems is connected to the common power supply line.

According to the above configuration, among the light sources having a plurality of power supply systems, the input terminals or output terminals of the light sources having at least two power supply systems are connected to the common power supply line. Thereby, the power supply line connected to the input terminal or the output terminal is shared. Therefore, it is possible to provide an illumination device that can reduce the number of power supply lines.

Other objects, features, and superior points of the present invention will be fully understood from the following description. The advantages of the present invention will become apparent from the following description with reference to the accompanying drawings.

As described above, according to the present invention, it is possible to provide an illumination device capable of reducing the number of power supply lines.

It is a perspective view of the illuminating device which concerns on this invention. It is a disassembled perspective view of the fixing | fixed part in the illuminating device of this invention. It is sectional drawing of the fixing | fixed part in the illuminating device of this invention. It is a disassembled perspective view of the illumination part in the illuminating device of this invention. It is sectional drawing of the wire in the illuminating device of this invention. It is a top view of the fixing | fixed part in the illuminating device of this invention. In the illuminating device of this invention, it is an enlarged view which shows the state by which the wire was fixed to the rotation angle. In the illuminating device of this invention, it is a top view which shows the state in which the rotation cover was latched by the rotation angle. In the illuminating device of this invention, it is sectional drawing which shows the state by which the latching of the rotation angle and the rotation cover was cancelled | released. It is a perspective view of the adjustment mechanism in the illuminating device of this invention. Two power supply systems are provided, and the input terminal indicated by plus (+) and the output terminal indicated by minus (−) are connected to independent power supply lines for LEDs each having a color tone of white and light bulb color, respectively. FIG. It is the schematic which shows the wiring which provided the electric power supply line of the output terminal side which is provided with two electric power supply systems, and is a color tone with white and a light bulb color, respectively, and is shown by minus (-) in common. . It is a perspective view which shows another rotation cover in the illuminating device of this invention. It is a perspective view which shows another rotation cover in the illuminating device of this invention. It is a perspective view which shows another rotation cover in the illuminating device of this invention. It is a figure which shows the illuminating device of patent document 1, (a) is sectional drawing of an illuminating device, (b) is an XX line end view of the electric cord provided in the illuminating device of (a). is there.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

(Lighting device 10 according to the present invention)
FIG. 1 is a perspective view of a lighting device 10 according to the present invention. The illuminating device 10 is connected to the fixing unit 1 fixed to the ceiling as an installation unit, the illuminating unit 2 including an LED as a light source, and a plurality of units that are connected to the fixing unit 1 and the illuminating unit 2 and suspend the illuminating unit 2 from the ceiling. The wire 3 as a suspension member (here three) is provided. That is, the illuminating device 10 of the present embodiment is a pendant luminaire in which the illuminating unit 2 is suspended by three wires 3. Since the illuminating device 10 includes an LED as a light source, a long life and low power consumption can be realized. In the following description, for the sake of convenience, the ceiling side (fixed portion 1 side) is described as an upper portion (upper), and the floor side (illumination portion 2 side) is described as a lower portion (lower). In addition, in this embodiment, although the fixing | fixed part 1 is being fixed to the ceiling, the installation part which installs the fixing | fixed part 1 is not restricted to a ceiling, The support bar which can fix the fixing | fixed part 1 and can suspend the illumination part 2 Etc.

(Fixed part 1)
FIG. 2 is an exploded perspective view of the fixing unit 1 in the lighting device 10. FIG. 3 is a cross-sectional view of the fixing portion 1 in the lighting device 10.

As shown in FIG. 2, the fixing unit 1 includes a chassis 11, a rotation angle (holding unit) 12, a substrate angle 13, a substrate support 14 a, a power supply substrate 15, a substrate support 14 b, a rotation cover (winding unit) 16, and a substrate cover 17. , And a bottom cover 18.

The rotation angle 12 serves as a guide for holding the rotation cover 16 and rotating the rotation cover 16. The outer edge portion of the rotation angle 12 has a comb-teeth shape and functions to lock the rotation cover 16 and assist the rotation of the rotation cover 16. A hooking claw 12 a for hooking the tip of the wire 3 is formed on the outer surface of the rotation angle 12.

The substrate angle 13 is inserted into the rotation angle 12. A plurality of screw holes 13a for fixing the power supply substrate 15 are formed in the substrate angle 13, and the power supply substrate 15 sandwiched between the substrate supports 14a and 14b is fixed.

The rotation cover 16 is disposed outside the rotation angle 12. The rotary cover 16 winds the wire 3 and adjusts the height of the illumination unit 2 (the distance from the illumination unit 2 to the fixed unit 1). A winding path 16a (first winding path) for winding the three wires 3 in the same path is formed on the outer surface of the rotary cover 16. The rotation cover 16 winds the wire 3 along the winding path 16 a by rotating along the rotation angle 12. Locking claws 16 b and ribs 16 c are formed on the inner surface of the rotary cover 16. The locking claw 16 b locks the rotary cover 16 to the outer edge portion of the rotation angle 12 when the rotary cover 16 is not rotated. The rib 16 c contacts the outer edge of the rotation angle 12 when rotating the rotation cover 16, and rotates the rotation cover 16 along the outer edge of the rotation angle 12. An adjustment mechanism 4 is provided on the outer surface of the rotary cover 16 corresponding to each wire 3. The adjustment mechanism 4 adjusts the length of the wire 3 (the length of the wire 3 from the fixing unit 1 to the illumination unit 2). Although not shown, the tip of the wire 3 is fixed to the inner surface of the rotary cover 16. Details of the adjustment mechanism 4 will be described later.

The substrate cover 17 is fixed to the flange portion 13 b of the substrate angle 13. A one-touch adapter 17 a for connecting the fixing portion 1 to the ceiling is provided on the ceiling side surface of the substrate cover 17. The bottom cover 18 becomes the bottom of the fixed portion 1 and covers the chassis 11.

On the other hand, as shown in FIG. 3, the rotation angle 12, the substrate angle 13, the substrate support 14 a, the power supply substrate 15, the substrate support 14 b, the rotation cover 16, and the substrate cover 17 are accommodated in the chassis 11. Further, each member of the fixing portion 1 is directly or indirectly fixed to the chassis 11 except for the rotating cover 16.

The chassis 11, the substrate supports 14a and 14b, and the power supply substrate 15 each have an opening at the center. These openings are connected, and the rosette 5 attached to the ceiling is inserted into the openings. Then, the one-touch adapter 17 a formed on the substrate cover 17 is connected to the rosette 5. Thereby, the fixing | fixed part 1 is fixed to a ceiling. The power supply board 15 is surrounded by the chassis 11, the board angle 13, and the board cover 17 in case a trouble such as a fire occurs.

(Lighting part 2)
FIG. 4 is an exploded perspective view of the illumination unit 2 in the illumination device 10. The illuminating unit 2 includes heat sinks 21a to 21e, LED angles 22, LED units 23, an outer cover 24, a light guide plate 25, a diffuser plate 26, a heat sink 21f, a cushion 27, a heat sink 21g, and a DEC cover 28. . Each part of the illumination part 2 is fixed to the heat sink 21a directly or indirectly. In FIG. 4, the heat sink 21a side is the ceiling side. Although not shown, the wires 3 are evenly connected to the heat sink 21a at intervals of 120 degrees.

The heat sinks 21a to 21e dissipate heat when the LED unit 23 emits light. The LED unit 23 has a plurality of LEDs mounted as a light source in the lighting device 10. The LED unit 23 is attached to the LED angle 22. The light guide plate 25 emits light emitted from the LEDs in the floor direction (downward). The diffusion plate 26 diffuses the light emitted from the LED that has passed through the light guide plate 25 in the surface direction. Specifically, a scatterer print pattern (not shown) is formed on the diffusion plate 26. Thereby, wide-angle and uniform light can be emitted by irregularly reflecting the light emitted from the LED. In other words, uniform light with less luminance unevenness can be emitted. The

heat radiating plates

21f and 21g radiate the heat generated in the diffusion plate 26 and the light guide plate 25. A cushion 27 is provided between the

heat radiating plates

21f and 21g. The DEC cover 28 becomes the bottom of the illumination unit 2.

(Wire 3)
The wire 3 has a function of suspending the illumination unit 2 and a function of supplying power to the illumination unit 2. Specifically, one end of the wire 3 is equally connected to the rotation angle 12 of the fixed part 1 and the other end is connected to the heat radiating plate 21a of the illuminating part 2, respectively, and the illuminating part 2 is suspended from the ceiling. Further, the wire 3 supplies power to the LED mounted on the LED unit 23. FIG. 5 is a cross-sectional view of the wire 3.

As shown in FIG. 5, the wire 3 is composed of a reinforcing cable (supporting part) 3a, a conductor (power supply line) 3b, and an insulator (insulating part) 3c. The wire 3 has a three-layer structure in which a reinforcing cord 3a disposed in the center is covered with a conductor 3b, and further, the conductor 3b is covered with an insulator 3c.

The reinforcing cord 3a is a portion that substantially supports the illumination unit 2. For this reason, the reinforcing cord 3a is formed of a material (for example, Kevlar (trade name: Kevlar), etc.) having a higher strength against the load than the conductor 3b and the insulator 3c. The reinforcing cord 3a is not particularly limited as long as the reinforcing cord 3a is formed of a material that can withstand the hanging of the illumination unit 2. The conductor 3b is a power supply line that supplies power to the illumination unit 2, and is formed of a metal wire such as a copper wire.

The insulator 3c is made of an insulating material such as vinyl chloride. The insulator 3c is preferably formed from a transparent material. As a result, the apparent thickness of the wire 3 appears to be thinner than the actual thickness. That is, the actual thickness of the wire 3 should be the outer diameter X of the insulator 3c. However, if the insulator 3c is transparent, the thickness of the insulator 3c is not substantially recognized. As a result, the apparent thickness of the wire 3 becomes the outer diameter Y of the conductor 3b, and the wire 3 looks thinner than the actual thickness. Therefore, it is possible to realize the lighting device 10 having excellent design.

Thus, in this embodiment, the conductor (electric power supply line) 3b is provided on the wire 3 as a hanging member. That is, the conductor 3b is integrated with the wire 3, and it is not necessary to provide the conductor 3b and the wire 3 separately. Therefore, it is possible to provide the wire 3 with a function of suspending the illumination unit 2 and a function of supplying power to the light source.

(Adjusting the height of the illumination unit 2)
Next, height adjustment of the illumination part 2 in the illuminating device 10 is demonstrated. FIG. 6 is a top view of the fixing portion 1 in the lighting device 10. However, the chassis 11 is omitted in FIG. FIG. 7 is an enlarged view showing a state in which the wire 3 is fixed to the rotation angle 12 in the lighting device 10. FIG. 8 is a top view showing a state in which the rotation cover 16 is locked to the rotation angle 12 in the lighting device 10. FIG. 9 is a cross-sectional view illustrating a state where the locking between the rotation angle 12 and the rotation cover 16 is released in the lighting device 10.

When adjusting the height of the illumination unit 2 in the illumination device 10, first, the bottom cover 18 is removed. And the position of the illumination part 2 is adjusted by rotating the rotation cover 16 and changing the length from the fixing | fixed part 1 of the wire 3 to the illumination part 2. FIG. In the illuminating device 10, only the rotating cover 16 of the fixed portion 1 is rotated. The wires 3 are connected at equal intervals in the circumferential direction of the rotary cover 16.

Specifically, FIG. 6 shows a state in which the length between the fixing portion 1 of the wire 3 and the illumination portion 2 is the longest, that is, the illumination portion 2 is suspended at the lowest position (floor side). Show. As shown in FIG. 6, the wire 3 extends along a winding path 16 a formed on the outer surface of the rotary cover 16. The end of the wire 3 is a notch 16 d formed in the rotary cover 16, which changes direction from the winding path 16 a into the rotary cover 16 and is fixed to the rotary angle 12. Specifically, as shown in FIG. 7, the tip of the wire 3 has a loop shape and is hooked by hook claws 12 a formed at equal intervals in the circumferential direction of the outer surface of the rotation angle 12. Yes. Thereby, the end portion of the wire 3 is fixed to the fixing portion 1.

When the height of the illumination unit 2 is not adjusted (normal state), the rotation cover 16 is locked (fixed) to the rotation angle 12 at a plurality of locations. That is, in the normal state, the rotary cover 16 is not rotated. Specifically, as described above, the outer edge portion of the rotation angle 12 has a comb-teeth shape (see FIG. 2). As shown in FIG. 8, the locking claw 16 b formed on the inner surface of the rotary cover 16 is locked to the protruding portion 12 b of the outer edge portion of the rotation angle 12. A rib 16 c is also formed on the inner side surface of the rotary cover 16. However, the rib 16c is formed above the locking claw 16b. For this reason, in a state where the rotary cover 16 is not rotated, the rib 16c is not in contact with the outer edge portion (projecting portion 12b) of the rotation angle 12.

On the other hand, when adjusting the height of the illuminating unit 2, first, the rotating cover 16 is manually rotated to unlock the locking claw 16b and the protruding portion 12b. Specifically, in the case of FIG. 8, when the rotary cover 16 is rotated clockwise, the locking claw 16b moves from the protruding portion 12b of the rotation angle 12 to the depressed portion 12c. Thereby, the latching | locking with the latching claw 16b and the protrusion part 12b is cancelled | released. Next, as shown in FIG. 9, the rotary cover 16 is lowered until the rib 16 c formed above the locking claw 16 b comes into contact with the outer edge portion of the rotation angle 12. The rib 16c is formed around the inner surface of the rotary cover 16 except for the region where the locking claw 16b is formed. Thereby, the rotation cover 16 is moved (rotated) along the outer edge portion of the rotation angle 12, and the length between the fixing portion 1 of the wire 3 and the illumination portion 2 can be adjusted. Specifically, when the rotary cover 16 is rotated clockwise, all the wires 3 are wound up simultaneously with the rotation. As a result, the fixing unit 1 and the illumination unit 2 gradually approach each other, and the illumination unit 2 can be installed at a high position. On the contrary, when the rotation cover 16 is rotated counterclockwise, all the wires 3 are simultaneously wound down. As a result, the fixing unit 1 and the illumination unit 2 are gradually separated, and the illumination unit 2 can be installed at a low position. As described above, the height of the illumination unit 2 is adjusted by adjusting the length between the fixing unit 1 and the illumination unit 2 of the wire 3 according to the rotation amount (movement amount) of the rotary cover 16. Can do. In addition, when adjusting the height of the illumination part 2, the latching claw 16b is not in contact with the outer edge part (projection part 12b) of the rotation angle 12. When the height adjustment of the illuminating unit 2 is completed, the rotary cover 16 is lifted and rotated, and the locking claw 16b of the rotary cover 16 is again locked to the protrusion 12b of the rotation angle 12. In the lighting device 10, the locking claw 16b is provided below the rib 16c. For this reason, it is possible to easily lock the locking claw 16b to the protruding portion 12b while visually confirming.

As described above, the lighting device 10 adjusts the height of the lighting unit 2 by rotating the rotary cover 16 clockwise or counterclockwise and winding or lowering the wire 3 in conjunction with the rotation. Is possible.

In addition, the space | interval (interval of the depression part 12c) of the protrusion part 12b in the outer edge part of the rotation angle 12 is not specifically limited. If this interval is narrowed, a large number of protrusions 12b and depressions 12c are provided, so that the height of the illumination unit 2 can be adjusted more strictly. Therefore, for example, it is preferable to provide the depressed portions 12c at intervals of 15 degrees.

Moreover, the illuminating device 10 suspends the illuminating unit 2 with three wires 3 that are evenly connected to the fixing unit 1 and the illuminating unit 2. One end of the wire 3 is fixed to the hooking claw 12 a of the rotation angle 12. The hooking claws 12a are provided on the outer surface of the rotation angle 12 at intervals of 120 degrees. On the other hand, the other end of the wire 3 is connected to the heat radiating plate 21a of the illumination unit 2 at intervals of 120 degrees. Thus, by arranging the wires 3 evenly, the illumination unit 2 can be stably suspended in a balanced manner.

Here, the rotation amount (movement amount) of the rotation cover 16 is not particularly limited. However, when winding a plurality of wires 3 in the same winding path, if the rotation amount of the rotary cover 16 is too large, the wires 3 may overlap each other and may become entangled. Therefore, when winding a plurality of wires 3 on the same winding path, it is preferable to set the rotation amount of the rotary cover 16 so that the windings between the wires 3 do not interfere with each other by overlapping the plurality of wires 3.

Specifically, in the lighting device 10, three wires 3 are evenly arranged on the rotation angle 12, and a winding path 16a for winding the three wires 3 in the same path is formed. Further, the respective winding paths 16a are provided on the outer surface of the rotary cover 16 at the same height and in parallel to the direction perpendicular to the suspension direction (see FIG. 6). In this case, it is preferable that the maximum value of the rotation angle of the rotary cover 16 is 120 degrees. Thereby, when the wire 3 is wound up by rotating the rotary cover 16, the winding of another wire 3 is not interfered. That is, since the wire 3 is not wound at a rotation angle of 120 degrees or more, the wires 3 do not overlap and do not get entangled. Therefore, even if the three wires 3 are wound using the winding path 16 a that is wound on the same path, the length between the fixing portion 1 of the wires 3 by the winding of the wire 3 and the illuminating portion 2. Can be reduced.

In addition, since the lighting device 10 uses three wires 3, it is preferable to set the maximum rotation angle of the rotary cover 16 to 120 degrees so that the wires 3 do not overlap each other. Therefore, when n wires (n is an integer of 2 or more) of wires 3 are used, it is preferable that the maximum value of the rotation angle of the rotation cover 16 is 360 / n degrees.

As described above, in the lighting device 10, when the rotating cover 16 is rotated, each wire 3 is wound along the side surface of the rotating cover 16 in conjunction with the rotation. Thereby, according to the rotation amount of the rotation cover 16, the length between the fixing | fixed part 1 of the wire 3 and the illumination part 2 can be adjusted (expanded / contracted) simultaneously. Therefore, the dispersion | variation in the length between the fixing | fixed part 1 of the wires 3 by the winding of the wire 3 from the illumination part 2 can be reduced.

Further, in the lighting device 10, the rotary cover 16 is manually rotated. For this reason, in order to wind up the wire 3, mechanical means, such as a motor, are unnecessary. Therefore, it is possible to achieve downsizing (space saving), weight reduction, and cost reduction of the fixing unit 1.

Further, in the lighting device 10, only the rotating cover 16 of the fixed part 1 is rotated. That is, it is possible to adjust the length between the fixed portion 1 of the wire 3 and the illumination portion 2 by rotating only the rotary cover 16. For this reason, even if the rotation cover 16 is rotated, no extra force acts on the fixed portion 1. Therefore, it is possible to prevent the fixing portion 1 from coming off the ceiling. Moreover, since only the rotation cover 16 is rotated, the user can adjust the length between the fixing part 1 of the wire 3 and the illumination part 2 (height of the illumination part 2) with a small force.

(Adjustment mechanism 4)
The illuminating device 10 suspends the illuminating unit 2 with the three wires 3 and maintains the horizontal posture of the illuminating unit 2. For this reason, if the lengths of the wires 3 from the fixing unit 1 to the illumination unit 2 are different, an inclination is generated with respect to the hanging direction of the illumination unit 2. In particular, the lighting device 10 winds the rotary cover 16 and adjusts the height of the lighting unit 2. For this reason, if each wire 3 is wound differently, the length between the fixing portion 1 and the illumination portion 2 tends to vary between the wires 3. In particular, when the three wires 3 are wound by 120 degrees or more along the same route, the wires 3 overlap each other, so that the illumination unit 2 is likely to be inclined. Further, when the installation part such as the ceiling for fixing the fixing part 1 is inclined with respect to the hanging direction, the lighting part 2 is inclined even if the length from the fixing part 1 to the lighting part 2 of the wire 3 is equal. Occurs.

Therefore, the lighting device 10 includes an adjustment mechanism 4 that adjusts the length between the fixing portion 1 of the wire 3 and the lighting portion 2 independently of the other wires 3. FIG. 10 is a perspective view of the adjustment mechanism 4.

The adjusting mechanism 4 is provided in the vicinity of the entrance of the winding path 16a formed on the outer surface of the rotary cover 16. The adjustment mechanism 4 includes a movable part 41, a screw (moving part) 42, a nut 43, and a cover 44.

The movable part 41 adjusts the length from the fixed part 1 of the wire 3 to the illumination part 2 by moving in contact with the wire 3. Moreover, the movable part 41 contacts the wire 3 and guides the wire 3 extending in the vertical direction to the winding path 16a. That is, the movable portion 41 serves as a guide for changing the direction of the wire 3 extending in the vertical direction in the horizontal direction along the outer surface of the rotary cover 16.

The screw 42 is provided in the cover 44 and is fixed to the movable portion 41 via a nut 43 fixed in the cover 44. Accordingly, when the screw 42 is rotated, the screw moves in the hanging direction, and the movable portion 41 is moved up and down (in the hanging direction) via the nut 43. As a result, the movable part 41 abuts on the wire 3 and moves, whereby the wire 3 can be moved in the hanging direction. Thereby, the length from the fixing | fixed part 1 of the wire 3 to the illumination part 2 is adjusted independently of the other wire 3, and the inclination of the illumination part 2 can be adjusted. Therefore, it can adjust so that the illumination part 2 may be kept horizontal. Moreover, the illumination part 2 can also be inclined to a desired angle with respect to the hanging direction. In addition, the method of moving the movable part 41 is not limited to the method of rotating the screw 42 to move it, and may be a method of moving the movable part 41 by changing the fixing position of the movable part 41 itself to the rotary cover 16.

In the lighting device 10, an adjustment mechanism 4 is provided for each of the three wires 3. Thereby, the length from the fixing | fixed part 1 of all the wires 3 to the illumination part 2 can be adjusted, and it can be made the same length. However, the adjustment mechanism 4 adjusts the length between the fixing portion 1 of the wire 3 including the adjustment mechanism 4 and the illumination portion 2 independently of the other wires 3 and varies the length of the other wires 3. Even if it is not, it is possible to balance the length with the other wires 3. Therefore, it is not necessary to provide for all the wires 3, and the adjusting mechanism 4 may be provided for one or two of the three wires 3. When the adjustment mechanism 4 is provided for each of the two wires 3, the length of the two wires 3 provided with the adjustment mechanism 4 is based on the length of the wire 3 where the adjustment mechanism 4 is not provided. Adjust. Thereby, the length from the fixing | fixed part 1 of all the wires 3 to the illumination part 2 can be made the same, and the illumination part 2 can be kept horizontal.

In FIG. 10, the length of the wire 3 is adjusted by moving the movable portion 41 in the hanging direction (thickness direction of the rotating cover 16). However, the movable direction of the movable portion 41 is not limited to the hanging direction, and may be moved in the horizontal direction. In this case, a guide for moving the wire 3 in the hanging direction by moving the movable portion 41 in the horizontal direction may be provided separately from the movable portion 41. Thereby, the length of the wire 3 can be adjusted and the inclination of the illumination part 2 can be corrected similarly to the case where it is made to move in the hanging direction.

As described above, since the illumination device 10 includes the adjustment mechanism 4, the length between the fixing portion 1 and the illumination portion 2 of at least one wire 3 of the plurality of wires 3 is the other wire 3. Are adjusted independently. Thereby, even if there is a difference in the length between the fixed portion 1 of the three wires and the illumination portion 2 and the illumination portion 2 is inclined, the distance between the fixed portion 1 of the wire 3 and the illumination portion 2 The length of can be adjusted. Therefore, the illuminating device 10 which can adjust the inclination of the illumination part 2 can be provided.

(Common use of power supply line for wire 3)
In the illuminating device 10, the LED mounted on the LED unit 23 may be a single color or a plurality of colors. When a plurality of colors of LEDs are mounted, various tonings can be enjoyed, so that the usage of the lighting device 10 is diversified. For example, in the illumination device 10 using LEDs as light sources, white LEDs and bulb-colored LEDs having different color temperatures may be mounted. The illuminating device 10 of this embodiment is provided with a light source provided with two power supply systems of white LED and light bulb color LED. FIG. 11 includes two power supply systems, in which an input terminal indicated by a plus (+) and an output terminal indicated by a minus (−) are independent of each other for LEDs whose color tones are white and light bulb color, respectively. It is the schematic which shows the wiring connected to the line. FIG. 12 shows wiring in which two power supply systems are provided, and the power supply lines on the output terminal side indicated by minus (−) are connected in common to LEDs having a color tone of white and light bulb color, respectively. FIG. Here, the power supply system is a system comprising a light source such as an LED as shown in FIG. 11 and an input terminal and an output terminal that are connected to the light source and supply power.

When two systems of LEDs are provided, as shown in FIG. 11, a power supply line connected to an input terminal indicated by a plus and an output terminal indicated by a minus is required for each of a white LED and a light bulb color LED. . For this reason, a total of four power supply lines (two connected to the input terminal and two connected to the output terminal) are required. That is, four wires 3 (conductors 3b) are required.

Therefore, in the lighting device 10, it is preferable to share a power supply line connected to one of the input terminal and the output terminal. In FIG. 12, the power supply line connected to the output terminal is shared. By sharing a power supply line connected to one of the input terminal and the output terminal of the two light sources consisting of a white LED and a light bulb color LED, the power from one power source is white LED and the light bulb color LED. And emit light. That is, light is emitted so that the output of the dimming rate is 100% in total of the white LED and the light bulb color LED. In normal use of a lighting device, it is only necessary to change the color temperature ratio between white and bulb color by changing the ratio of the dimming rate of the white LED and the bulb-colored LED. It is not necessary for the LED and the bulb-colored LED to emit light at 100% output simultaneously. Therefore, even if a common power supply line is connected to the input terminal or output terminal of the two light sources, there is no inconvenience in lighting and using. For this reason, even if wiring is performed with a total of three power supply lines, it is possible to turn on, dimm, and adjust the white LED and the light bulb color LED. Thereby, while being able to simplify the circuit structure of white LED and a light bulb color LED, the number of power supply lines can be reduced. Therefore, an inexpensive lighting device 10 can be provided. Furthermore, if the power supply lines are not shared, the number of wires 3 that are four suspension members that are required in total can be reduced to three. That is, the illumination unit 2 can be suspended by the three wires 3 each having one conductor 3b that is a power supply line.

In order to suspend the illuminating unit 2 so that force is applied to all of the four or more wires 3, all the one ends connected to the heat radiation plate 21a of the four or more wires 3 pass on the same surface. The length from the fixed part 1 to the illumination part 2 must be adjusted. When there are four or more wires 3, the one end of all the wires 3 may not pass on the same surface, but when suspended by three wires 3, the one end of all the wires 3 is always on the same surface. Pass through. Therefore, when suspending with the three wires 3, it becomes possible to suspend the illumination part 2 so that force may be applied to all the wires 3 reliably. In addition, by suspending with three wires 3, the inclination of the illumination unit 2 can be adjusted simply by adjusting the length between the fixing unit 1 and the illumination unit 2 of the two wires 3 at most. The tilt can be adjusted. Therefore, the number of adjustment mechanisms 4 can also be reduced.

In FIG. 12, the power supply line connected to the output terminal is shared, but the power supply line connected to the input terminal may be shared. In addition to white LEDs and bulb-colored LEDs, LEDs of different colors, LEDs of different capacities regardless of color difference, fluorescent lamps, EL (Electro Luminescence), etc. may be used, and light sources having a plurality of power supply systems I just need it. Also in this case, by sharing the power supply lines, the number of power supply lines can be reduced as compared with the case where the power supply lines are not shared.

As described above, when the lighting device 10 includes light sources of two power supply systems, it is preferable that the power supply line connected to one of the input terminal and the output terminal is shared. Accordingly, the number of wires 3 is only one more than the number of light source systems. Therefore, the circuit structure of the pendant illumination device 10 can be simplified, and the number of power supply lines can be reduced. If the power supply lines connected to the input terminals or output terminals of all the light sources are shared, the number of power supply lines can be reduced most. However, the configuration is not limited thereto, and among the light sources having a plurality of power supply systems, the input terminals or output terminals of the light sources having at least two power supply systems are connected to a common power supply line. Just do it. Thereby, the number of power supply lines can be reduced as compared with the case where each input terminal and each output terminal are connected to independent power supply lines.

(Modification of lighting device 10)
The lighting device 10 of the present embodiment can also be configured as follows.

In the present embodiment, the lighting device 10 that can adjust the height of the lighting unit 2 by rotating the rotary cover 16 has been described. However, in the illumination device of the present invention, it is not essential to adjust the height of the illumination unit 2. Even in an illuminating device that does not require adjustment of the height of the illuminating unit 2, the adjustment mechanism 4 adjusts the attachment error of the length from the fixing unit 1 to the illuminating unit 2 of the wire 3, so that the illuminating unit 2 is leveled. Can be kept in. Moreover, the illumination part 2 can also be inclined to a desired angle with respect to the hanging direction. In this case, of course, it is not necessary to rotate the rotary cover 16.

The lighting device 10 of the present embodiment is configured to wind the wire 3 in conjunction with the rotation of the rotary cover 16. However, the winding of the wire 3 may be performed mechanically using a winding device. For example, it is possible to connect the wire 3 to a drum connected to a motor, rotate the drum, and automatically wind the wire 3.

Further, the illumination device 10 of the present embodiment is configured to manually rotate the rotary cover 16. The rotary cover 16 may be automatically rotated by a motor or the like. Thereby, the length between the fixing | fixed part 1 of the wire 3 and the illumination part 2 is adjusted mechanically. Therefore, the length of the wire 3 (the height of the illumination unit 2) can be strictly managed.

Further, in the lighting device 10 of the present embodiment, the rotary cover 16 can be configured as follows. FIGS. 13 to 15 are perspective views showing modifications of the rotating cover 16 (rotating covers (winding portions) 16A, 16B, 16C). Below, it demonstrates centering on difference with the rotation cover 16. FIG. 13 to 15 show only the main parts of the rotary covers 16A, 16B, and 16C, the basic shape and members are the same as those of the rotary cover 16.

13 is formed with a single groove 16e (first winding path) instead of the winding path 16a in the rotating cover 16. As shown in FIG. The groove 16e also has a function similar to that of the winding path 16a. The groove 16e makes one round of the outer surface of the rotary cover 16A. The rotary cover 16A can also wind the wire 3 along the groove 16e in the same manner as the rotary cover 16 in which the winding path 16a is formed. The maximum value of the rotation angle of the rotary cover 16A is preferably less than 120 degrees in order to avoid the wires 3 from getting tangled.

14 is formed with three grooves 16e in the rotary cover 16A. That is, a plurality of grooves 16f (second winding paths) are formed on the outer surface of the rotary cover 16B. For this reason, when the rotation cover 16B is rotated, each wire 3 is wound up along the predetermined groove 16e. As a result, when winding the wire 3, the wire 3 is wound in different paths, so that the winding of another wire 3 is not interfered. That is, the wires 3 are not overlapped with each other. Therefore, the dispersion | variation in the length between the fixing | fixed part 1 between the wires 3 by the winding-up of the wire 3 from the illumination part 2 can be reduced. Furthermore, since the groove 16e is independent so as to be wound up separately for each wire 3, the rotation angle of the rotary cover 16B is not restricted. That is, when three wires 3 are used, the maximum value of the rotation angle of the rotation cover 16B can be set to 120 degrees or more. Thereby, the length between the fixing | fixed part 1 of the wire 3 and the illumination part 2 can be expanded / contracted largely. Therefore, the height adjustment width of the illuminating unit 2 can be expanded as compared with the case where the wire 3 is wound around the same path and wound around the rotary cover 16.

In the rotating cover 16C of FIG. 15, the side surface of the rotating cover 16C is curved in a wave shape. In other words, the rotating cover 16 </ b> C has an uneven surface on the contact surface with the wire 3. When the contact surface is flat (planar), the wire 3 and the rotary cover 16 are in surface contact or line contact. On the other hand, when the unevenness is formed on the contact surface, the wire 3 and the rotary cover 16 are in point contact. As a result, the contact area between the wire 3 and the rotary cover 16 is lower than when the uneven surface is not formed. Therefore, the friction between the wire 3 and the rotary cover 16C can be reduced, and the wire 3 can be wound with a smaller force.

Further, even if Teflon (registered trademark) is coated on at least one of the contact surface of the rotating cover 16C with the wire 3 and the insulator 3c, the friction between the wire 3 and the rotating cover 16C can be reduced. is there. Thus, in the rotating cover 16C, it can be said that the contact surface with the wire 3 is subjected to a process (smoothing process) for reducing friction between the wire 3 and the rotating cover 16C. Thereby, the wire 3 can be wound up with a small force compared with the case where the smoothing process is not performed. Such a smoothing process may be performed on at least one of the contact surface with the wire 3 and the surface of the wire 3 (insulator 3c) in the rotating cover 16C.

In the present embodiment, an illumination device using an LED as a light source has been described. However, the light source is not limited to the LED, and various light sources such as a fluorescent lamp, a halogen bulb, and an EL can be applied.

In the lighting device 10, the adjustment mechanism 4 is provided on the fixed portion 1 (the rotation cover 16). However, the adjustment mechanism 4 may be provided in the illumination unit 2. In the present embodiment, the pendant illumination device 10 has been described. However, even in the case of a ceiling illumination device, the number of power supply lines can be reduced.

As described above, the lighting device according to the present invention is a lighting device including a lighting unit including a light source including a plurality of power supply systems, and a power supply line that supplies power to the light source, One of an input terminal and an output terminal of a light source including at least two power supply systems is connected to the common power supply line.

In the illumination device according to the present invention, it is preferable that a suspension member for suspending the illumination unit is provided, and the suspension member includes the power supply line.

The lighting device is a pendant type lighting fixture provided with a hanging member for hanging the lighting unit. According to said structure, the electric power supply line is provided in the suspension member. That is, the power supply line is integrated with the suspension member, and it is not necessary to provide the power supply line and the suspension member separately. Therefore, it is possible to provide the suspension member with a function of suspending the illumination unit and a function of supplying power to the light source.

The lighting device according to the present invention includes a light source including two power supply systems and three suspension members, and the three suspension members are connected to the two power supply systems. Preferably, each of the power supply lines is provided one by one.

According to the above configuration, since the light source having two power supply systems is provided, a total of four power supply lines (two connected to the input terminal and two connected to the output terminal) are originally provided. I need it. However, since the power supply line connected to the input terminal or the power supply line connected to the output terminal is shared, the number of power supply lines can be reduced to three. That is, the illumination unit is suspended using the three suspension members. One of these three power supply lines is provided for each of the three suspension members. Therefore, it is possible to suspend the illumination unit with a good balance using the three suspension members, rather than suspending the illumination unit using the four suspension members.

In the lighting device, the light source having a plurality of power supply systems is a light source having two power supply systems, and there are three suspension members, and each suspension member has the two power systems. It can be said that it is the structure provided with three electric power supply lines connected to a supply system one by one.

In the lighting device according to the present invention, the suspension member may further include a support portion covered with the power supply line and an insulating portion covering the power supply line while supporting the illumination portion. preferable.

According to the above configuration, the suspension member has a three-layer structure in which the support portion disposed in the center is covered with the power supply line, and further, the power supply line is covered with the insulator. Therefore, the suspension member can be made thinner than the electric cord 102 described in Patent Document 1.

In the lighting device according to the present invention, it is preferable that the insulating portion is formed of a transparent material.

According to the above configuration, the insulating portion formed from the transparent material is not substantially recognized. As a result, the apparent thickness of the wire becomes the outer diameter of the power supply line, and the wire looks thinner than the actual thickness. Therefore, it is possible to realize an illumination device that is excellent in design.

In the illumination device according to the present invention, it is preferable that the light source is two types of LEDs having different power supply systems and color temperatures.

According to the above configuration, the light source is composed of two types of LEDs having different power supply systems and different color temperatures. Therefore, a long-life and low power consumption lighting device can be realized while enjoying various light adjustments and color adjustments.

The present invention is not limited to the above-described embodiment, and various modifications can be made within the scope indicated in the claims. That is, embodiments obtained by combining technical means appropriately modified within the scope of the claims are also included in the technical scope of the present invention. That is, the specific embodiments or examples made in the detailed description of the invention are intended to clarify the technical contents of the present invention, and are limited to such specific examples in a narrow sense. It should be understood that the invention can be practiced with various modifications within the spirit of the invention and the scope of the following claims.

The present invention can be applied to various lighting devices including a light source including a plurality of power supply systems.

DESCRIPTION OF SYMBOLS 1 Fixed part 2 Illumination part 3 Wire (hanging member)
3a Reinforcing cord (supporting part)
3b Conductor (power supply line)
3c Insulator (insulating part)
4 Adjustment mechanism 10 Illumination device 16 Rotating cover (winding part)
16A Rotating cover (winding part)
16B Rotating cover (winding part)
16C Rotating cover (winding part)
16a Winding path (first winding path)
16e Groove (first winding path)
16f groove (second winding path)
23 LED unit (light source)
41 Moving parts

Claims

An illumination unit including a light source including a plurality of power supply systems;
A lighting device comprising a power supply line for supplying power to the light source,
Of the light sources, any one of an input terminal and an output terminal of a light source provided with at least two power supply systems is connected to the common power supply line.
A suspension member for suspending the illumination unit,
The lighting device according to claim 1, wherein the suspension member includes the power supply line.
A light source comprising two power supply systems,
Including the above three suspension members,
The lighting device according to claim 2, wherein the three suspension members include the three power supply lines connected to the two power supply systems one by one.
The suspension member is
While supporting the illumination unit, a support unit covered with the power supply line,
The lighting device according to claim 2, further comprising an insulating portion that covers the power supply line.
The lighting device according to claim 4, wherein the insulating portion is made of a transparent material.
The lighting device according to any one of claims 3 to 5, wherein the light source is two types of LEDs having different power supply systems and color temperatures.