JP2022149520A - Lighting device - Google Patents

Abstract

To provide a lighting device capable of reducing its size.SOLUTION: A lighting device 11 includes a power supply part 15, a light source part 16, and an arm part 17, the power supply part 15 having a wiring surface 35 on the front side in a depth direction D, the light source part 16 having a light emission surface 62 and being arranged in a height direction H with respect to the power supply part 15, the arm part 17 being slanting to the corner side in the depth direction D of departing from the wiring surface 35, from one end mounted to the power supply part 15 toward the other end mounted to the light source part 16 for supporting the light source part 16 with respect to the power supply part 15 in the state that the light emission surface 62 is arranged on the corner side in the depth direction D further than the wiring surface 35 and a gravity center C2 of the light source part 16 is arranged on the corner side in the depth direction D further than a gravity center C1 of the power supply part 15.SELECTED DRAWING: Figure 4

Description

An embodiment of the present invention relates to a lighting device in which an arm section supports a light source section with respect to a power supply section.

Conventionally, there is a lighting device in which an arm supports a light source with respect to a power source. In this lighting device, if the light source section is arranged in the height direction with respect to the power supply section, the height dimension between the power supply section and the light source section tends to be large, and miniaturization is desired.

JP 2015-2157 A

A problem to be solved by the present invention is to provide a lighting device that can be miniaturized.

A lighting device according to an embodiment includes a power supply section, a light source section, and an arm section. The power supply unit has a wiring surface on the front side in the depth direction. The light source section has a light exit surface and is arranged in the height direction with respect to the power supply section. The arm portion is inclined in the depth direction away from the wiring surface from one end portion attached to the power supply portion toward the other end portion attached to the light source portion, and the light emitting surface is further in the depth direction than the wiring surface. The light source is supported with respect to the power source in such a state that the center of gravity of the light source is arranged on the far side in the depth direction with respect to the center of gravity of the power source.

According to the lighting device of the embodiment, it can be expected to be miniaturized.

FIG. 4 is a side view of the lower horizon light and the upper horizon light in use, showing an embodiment of the illumination device; Fig. 2 is a perspective view of the same lower horizon light; FIG. 4 is a perspective view of a state in which the light source section of the lower horizon light is rotated upward; Fig. 2 is a side view of the same lower horizon light; FIG. 4 is a side view of the lower horizon light with the light source part rotated upward; FIG. 3 is a plan view showing the internal structure of the power supply section of the lower horizon light; FIG. 3 is a perspective view of an upper horizon light, which is the same illumination device; Fig. 2 is a side view of the same upper horizon light;

An embodiment will be described below with reference to the drawings.

As shown in FIG. 1, in television studios, theaters, and the like, a horizon light is used as a lighting device 11 for illuminating a wall surface (horizont plane) 10 that serves as a background. The horizon lights include a lower horizon light 11a installed on the floor side, and an upper horizon light 11b suspended from a baton or the like on the ceiling side. The lower horizon light 11a is placed in a hollow pit 12 provided on the floor, or if there is no pit 12, it is placed on the back side of a hidden member erected on the floor. is prevented from entering. A plurality of these horizon lights 11a and 11b are arranged at predetermined intervals along the wall surface 10, and are often used with their power systems and signal systems electrically connected in series.

2 to 6 show the lower horizon light 11a. The lower horizon light 11a includes a power supply unit 15, a light source unit 16 arranged above the power supply unit 15 in the height direction H, and an arm unit supporting the light source unit 16 so as to be rotatable with respect to the power supply unit 15. 17. Regarding the lower horizon light 11a, the side facing the wall surface 10 is defined as the front side (wiring surface), and the front side (wiring surface) is used as a reference in the depth direction D, the left and right width direction W, and the height direction. Say H.

The power supply unit 15 controls the lighting of the light source unit 16 and also functions as an installation base installed on the bottom surface or the floor surface of the pit 12 . The power supply unit 15 includes a power supply housing 20 and a power supply unit 21 arranged in the power supply housing 20 .

The power supply housing 20 has a body portion 23 and a wiring portion 24 that protrudes upward from the front side (front side) in the depth direction D on the upper surface side of the body portion 23 .

The body portion 23 is formed in a thin and wide box-like shape in which the dimension in the height direction H is smaller than the dimension in the depth direction D and the width direction W, and the dimension in the depth direction D is smaller than the dimension in the width direction W. . That is, the body portion 23 is formed so that the width direction W is the longitudinal direction. The main body 23 includes a power supply case 26 integrally forming a bottom surface and both side surfaces in the width direction W, a front panel 27 forming a front surface, and an upper surface side on the back side in the depth direction D (rear side facing the front side) and It has a power supply cover 28 integrally formed on the rear side, and a power supply housing space 29 for housing the power supply unit 21 is formed therein. At the four corners of the bottom surface of the power supply case 26, rubber feet 30 are provided for placing on the floor or the like.

The wiring section 24 has a front panel 27 forming the front side, a wiring section cover 32 forming the upper surface side and the rear side, and outer plates 33 forming both side surfaces in the width direction W. As shown in FIG. A wiring space 34 that communicates with the power supply housing space 29 in the main body 23 is formed in the wiring portion 24 . The wiring space 34 is a space surrounded by the front panel 27 , the wiring section cover 32 , and the outer plate 33 , and communicates with the power supply housing space 29 . As with the body portion 23, the wiring portion 24 is also formed such that the width direction W is the longitudinal direction.

A wiring section cover 32 on the upper surface side of the wiring section 24 is inclined downward toward the depth side in the depth direction D. As shown in FIG. That is, the wiring section cover 32 on the upper surface side of the wiring section 24 is configured such that the height of the wiring section cover 32 protruding upward from the main body section 23 becomes lower toward the depth side in the depth direction D. As shown in FIG.

A wiring surface 35 is provided by the front panel 27 on the front side of the wiring portion 24 . The upper side of the wiring surface 35 is inclined toward the depth side in the depth direction D so as to face obliquely upward. The wiring surface 35 includes a power input unit 37 to which a power cable 36 for inputting AC power is connected, a power outlet 38 which is a power output unit for outputting the input AC power to the outside, and a high-level device such as a light control console. A signal input unit 40 to which a signal cable 39 for inputting the signal of is connected, a signal connector 41 which is a signal output unit for outputting the input signal to the outside, an operation unit 42 for performing operations such as various settings, and a setting A display section 43 for displaying the contents and the like is provided. Note that a touch panel may be used to serve as both the operation unit 42 and the display unit 43 . In addition, in the present embodiment, the front panel 27 is composed of one piece extending over the main body portion 23 and the wiring portion 24, but the front panel 27 may be separated. In other words, the front panel 27 may include two panels, a main body side front panel and a wiring section side front panel.

At approximately the middle position in the width direction W on the rear surface side of the wiring portion 24, a recessed portion 44 that opens to the upper surface side and the rear surface side is provided. The front side of the recessed portion 44 is covered with the wiring section cover 32 , the bottom side thereof is covered with the power supply cover 28 , and both inner side surfaces of the recessed portion 44 in the width direction W are covered with inner plates 45 . A wiring insertion portion in which one end side of a connection cable 46 electrically connecting the power source portion 15 and the light source portion 16 is inserted and wired in the width direction W of the wiring portion 24 in the inner plate 45 on one side in the width direction W. 47 is provided. One end of the connection cable 46 is inserted through the wiring space 34 of the wiring portion 24 from the wiring insertion portion 47 and then through the main body portion 23 to be connected to the power supply unit 21 disposed within the main body portion 23 . .

As shown in FIG. 6, the power supply unit 21 includes multiple AC-DC converters 49 and multiple DC-DC converters 50 . In this embodiment, two AC-DC converters 49 and three DC-DC converters 50 are used. The converters 49 are arranged side by side in the width direction W, and three DC-DC converters 50 are arranged side by side in the width direction W on the deep side in the depth direction D inside the main body 23 . Therefore, the plurality of AC-DC converters 49 and the plurality of DC-DC converters 50 are all arranged on the bottom surface of the main body 23 and arranged in the depth direction D and the width direction W without overlapping in the height direction H. are placed in Between the AC-DC converter 49 and the DC-DC converter 50, a metal partition plate is provided to reduce the influence of noise between the AC-DC converter 49 and the DC-DC converter 50. are placed.

AC power input to the power supply input unit 37 is input to two AC-DC converters 49 in parallel. Each AC-DC converter 49 converts the input AC power into a predetermined DC power and supplies it to the corresponding DC-DC converter 50 .

The DC power output from one AC-DC converter 49 is input to one DC-DC converter 50 on the left, and the DC power output from the other AC-DC converter 49 is two DC-DCs at the center and right. They are input in parallel to the converter 50 . A signal input to the signal input unit 40 from a host device (eg, a light control console, a baton, a node, etc.) is input to each DC-DC converter 50 . Then, each DC-DC converter 50 converts the input DC power into lighting power, which is DC power necessary for lighting each corresponding light source of the light source unit 16, supplies the light source unit 16 with the input signal dimming control based on

The lighting power output from each DC-DC converter 50 is supplied to the light source section 16 through the connection cable 46 .

The light source unit 16 also includes a light source housing 53 and a light source and optical components arranged in the light source housing 53 .

The light source housing 53 is thin in the depth direction D and formed in the shape of a rectangular box that is larger in the width direction W than the power supply housing 20 . The light source housing 53 has a square frame-shaped frame portion 54 , a light source cover 55 attached to the front side of the frame portion 54 , and a radiator 56 attached to the rear side of the frame portion 54 .

Support members 57 projecting rearward from the light source housing 53 and supported by the arm portions 17 are attached to both sides in the width direction W on the rear side of the frame portion 54 .

A cable receiving portion 58 protrudes from the center of the width direction W on the lower surface side of the frame portion 54 . The cable receiving portion 58 is provided corresponding to the region of the recessed portion 44 of the wiring portion 24 in the width direction W, and at least a portion of the cable receiving portion 58 is located within the recessed portion 44 of the wiring portion 24 according to the angle adjustment of the light source portion 16 . placed movably in the

A wiring insertion portion 59 is provided on one side surface of the cable receiving portion 58 , through which the other end of the connection cable 46 is inserted and wired in the width direction W of the cable receiving portion 58 . The other end of the connection cable 46 is electrically connected to the light source arranged inside the light source housing 53 .

The wiring insertion portion 47 of the wiring portion 24 and the wiring insertion portion 59 of the cable receiving portion 58 are provided facing the same direction in the width direction W, and one end side of the connection cable 46 is wired to the wiring portion 24 in the width direction W. In addition, the other end side is wired to the cable receiving portion 58 from the width direction W, and the intermediate portion between the one end side and the other end side of the connection cable 46 is bent in a substantially U shape, and at least part of the connection cable 46 is bent. are arranged in the recessed portion 44 of the wiring portion 24 .

An opening 60 is formed in the light source cover 55 , and a light diffusing plate 61 having light transmittance and light diffusing properties is provided to cover the opening 60 . The opening 60 and the light diffusion plate 61 constitute a light emission surface 62 from which the light from the light source section 16 is emitted.

A light-emitting module in which a plurality of light-emitting elements are mounted on a substrate is used as the light source. The light emitting module is arranged on the front side of the radiator 56 inside the light source housing 53 so that the light emitting element faces the light exit surface 62 . The light-emitting elements include light-emitting elements emitting six colors such as white, red, green, blue, cyan, and amber for color illumination. The other end of the connection cable 46 is electrically connected to the light emitting module. For example, for a light emitting element having a large number of elements, such as white, which is provided in a light emitting module, it is connected to the left DC-DC converter 50 connected solely to one AC-DC converter 49, and the element provided in the light emitting module is connected. For fewer light emitting elements, it is connected to the center or right DC-DC converter 50 which is connected in parallel with the other AC-DC converter 49 .

The optical component includes a reflecting component that reflects the light emitted by the light emitting element so that the light is emitted upward from the light emitting surface 62 .

The radiator 56 is provided on the rear side of the light source housing 53, and attached to the front side in a state in which the light emitting module is thermally connected. A plurality of heat radiation fins 64 protrude from the rear side of the radiator 56 .

Further, the arm portion 17 rotatably supports both side portions of the light source portion 16 in the width direction W with respect to both side portions of the power source portion 15 in the width direction W. As shown in FIG. The arm portion 17 includes an attachment portion 67 at one end to be attached to the power source portion 15 , a raised portion 68 raised from the attachment portion 67 above the power source portion 15 , and the light source portion 16 at the leading end of the raised portion 68 . It has a support portion 69 on the other end side for supporting.

The attachment portion 67 is formed to have a substantially L-shaped cross section, is arranged on the bottom surface and the side surface of the power supply housing 20, and is attached by screws 70, respectively.

The rising portion 68 is inclined toward the depth side in the depth direction D as it goes from the mounting portion 67 on the one end side to the supporting portion 69 on the other end side. The inclination angle is, for example, about 30° with respect to the vertical direction.

A support member 57 protruding from the back side of the light source section 16 is arranged inside the support portion 69 and is rotatably attached by a bolt 71 that is inserted through the support portion 69 and screwed to the support member 57 . The bolt 71 serves as the center of rotation in the horizontal direction along the width direction W of the light source section 16 .

Inside the support portion 69, a fixing metal fitting for fixing the light source portion 16 at the rotating position is arranged. The fixing bracket is fixed by screwing using a mounting hole 72 provided in the raised portion 68, and a fixing screw is screwed through an insertion hole 73 provided in the raised portion 68. The support member 57 is sandwiched and fixed between the upper portion 68 and the upper portion 68 .

A front edge portion of the rising portion 68 of the arm portion 17 is provided with a first restricting portion 74 that abuts against the rear side of the light source portion 16 to restrict the rotation of the light emitting surface 62 in the forward direction. A second restricting portion 75 is provided at the tip of the light source portion 16 to restrict the rotation in the direction in which the light emitting surface 62 faces upward. Therefore, the light source section 16 is rotatable within the angular range restricted by the first restriction section 74 and the second restriction section 75 .

Further, in the side view of the lower horizon light 11a, the center of gravity of the power supply unit 15 is located at C1, and the center of gravity of the light source unit 16 is located at C2. The light emitting surface 62 of the arm portion 17 is disposed further in the depth direction D than the wiring surface 35, and the position of the center of gravity C2 of the light source portion 16 is located further back in the depth direction D than the position of the center of gravity C1 of the power supply portion 15. The light source unit 16 is supported with respect to the power supply unit 15 so as to be arranged on the side.

The lower horizon light 11a is arranged on the bottom surface or floor surface of the pit 12 on the back side of the hidden member in a state in which the wiring surface 35 of the power supply unit 15 and the light emitting surface 62 of the light source unit 16 face the wall surface 10. and the power supply system and signal system are wired for use. When a plurality of lower horizon lights 11a are arranged, the power systems and signal systems of the plurality of lower horizon lights 11a are electrically connected in series and used.

The light source unit 16 of the lower horizon light 11a has a forward angle of the light exit surface 62 shown in FIGS. 2 and 4 and a light exit surface shown in FIGS. The angle can be adjusted between the angle at which 62 faces upward. 2 and 4, the position of the light source housing 53 is restricted while the back side of the light source housing 53 is in contact with the first restriction portion 74 of the arm portion 17. As shown in FIG. 3 and 5, the position of the light source housing 53 is regulated with the back side of the light source housing 53 in contact with the second regulating portion 75 of the arm portion 17. As shown in FIG.

The connection cable 46 that electrically connects the power supply unit 15 and the light source unit 16 is connected between the wiring unit 24 of the power supply unit 15 and the light source unit 16 when the light emitting surface 62 is oriented forward as shown in FIGS. Although the distance to the cable receiving part 58 is short and slack occurs, the slack is accommodated in the recessed part 44 of the wiring part 24 and is not caught between the power supply part 15 and the light source part 16.例文帳に追加On the other hand, when the light emitting surface 62 faces upward as shown in FIGS. 3 and 5, the distance between the wiring portion 24 of the power source portion 15 and the cable receiving portion 58 of the light source portion 16 is increased, but the connection cable 46 is slackened. is extended, the angle of the light source unit 16 can be adjusted.

In addition, when power is supplied to the power supply unit 15 and a signal instructing lighting is input, lighting power is supplied from the power supply unit 15 to the light source unit 16, the light emitting elements of the light source unit 16 are lit, and the light source unit 16 is turned on. The wall surface 10 is irradiated with the light emitted from the light emitting surface 62 of .

In the lower horizon light 11a of the present embodiment, the number of AC-DC converters 49 and DC-DC converters 50 in the power supply unit 15 increases as the number of colors increases and the output increases. Since the DC converter 49 and the plurality of DC-DC converters 50 are arranged on the bottom surface of the main body 23 side by side in the depth direction D and the width direction W without overlapping in the height direction H, the height dimension of the main body 23 is is prevented from increasing, thereby preventing the height dimension of the lower horizon light 11a from increasing.

Further, the arm portion 17 allows the light exit surface 62 to be arranged further in the depth direction D than the wiring surface 35, and the position of the center of gravity C2 of the light source portion 16 is located further in the depth direction D than the position of the center of gravity C1 of the power supply portion 15. By supporting the light source unit 16 with respect to the power source unit 15 so as to be arranged on the inner side of the lower horizontal light 11a, the lower horizon light 11a can be made smaller and the height can be reduced.

In this way, the lower horizon light 11a can be reduced in height by downsizing. , the light source part 16 can be suppressed from protruding upward from the inside of the pit 12 or the hidden member, and the light source part 16 can be kept out of sight. Moreover, since the height of the lower horizon light 11a can be reduced by downsizing, the center of gravity can be lowered, and a stable posture can be maintained even when the light source unit 16 is adjusted to any angle.

In addition, since the power supply unit 15 is provided with the wiring unit 24 that protrudes upward toward the near side in the depth direction D and has the wiring surface 35, the dimension in the depth direction D is increased without interfering with the light source unit 16. Wiring function can be secured without Therefore, it is possible to easily accommodate the placement of the lower horizon light 11a in the pit 12 having a limited width between the wall surface 10 and the pit 12 .

The wiring portion 24 protrudes upward from the front side of the power supply portion 15 in the depth direction D, but the light source portion 16 is supported by the arm portion 17 inclined toward the depth side in the depth direction D. It can be adjusted to any angle without interfering with the portion 24 .

In addition, since one end of the connection cable 46 is wired in the width direction W with respect to the wiring section 24 and the other end side is wired in the width direction W with respect to the light source section 16, the connection cable 46 is irradiated from the light source section 16. The power source section 15 and the light source section 16 can be electrically connected to each other without interrupting the light emitted from the light source section 16 or hindering the angle adjustment of the light source section 16, and miniaturization can also be achieved.

Moreover, by providing a recessed portion 44 in the wiring portion 24 and wiring the connection cable 46 from this recessed portion 44, the intermediate portion of the connection cable 46 can be accommodated in the recessed portion 44 according to the angle of the light source portion 16, and the connection cable can be 46 can be prevented from being sandwiched between the power source section 15 and the light source section 16.例文帳に追加

7 and 8 show the upper horizon light 11b.

The power supply unit 15 and the light source unit 16 use common parts with the lower horizon light 11a. The power supply unit 15 is provided with a structure for suspending it from a baton or the like. The light source section 16 is supported with respect to the power supply section 15 by the arm section 17 so that the light emitting surface 62 faces the wiring surface 35 of the power supply section 15 .

The arm portion 17 protrudes downward from the center of the power source portion 15 in the depth direction D, so that the center of gravity C1 of the power source portion 15 and the center of gravity C2 of the light source portion 16 approach each other and the center of gravity of the lower horizon light 11a as a whole. to ensure stability in the suspended state.

The upper horizon light 11b can share parts such as the power supply unit 15 and the light source unit 16 with the lower horizon light 11a.

The arm portion 17 may also be shared with the lower horizon light 11a. In this case, the suspension structure of the power supply unit 15 may be used to suspend and support the lower horizon light 11a in consideration of the center of gravity of the entire lower horizon light 11a.

The illumination device 11 is not limited to the horizon light, and can be applied to a projector or the like.

While several embodiments of the invention have been described, these embodiments have been presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and modifications can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the scope of the invention described in the claims and equivalents thereof.

REFERENCE SIGNS LIST 11 Lighting device 15 Power supply unit 16 Light source unit 17 Arm unit 24 Wiring unit 35 Wiring surface 46 Connection cable 62 Light exit surface C1, C2 Center of gravity D Depth direction H Height direction W Width direction

Claims (3)

A power supply unit having a wiring surface on the front side in the depth direction;
a light source unit arranged in a height direction with respect to the power supply unit and having a light exit surface;
are arranged on both sides in the width direction of the power supply unit, and are inclined in the depth direction away from the wiring surface from one end attached to the power supply unit toward the other end attached to the light source unit; The light source unit is placed in a state in which the light emitting surface is arranged on the back side in the depth direction from the wiring surface and the center of gravity of the light source unit is arranged on the back side in the depth direction from the center of gravity of the power source unit. an arm portion supporting against the portion;
A lighting device comprising: The lighting device according to claim 1, wherein the power source section has a wiring section that protrudes in the height direction from the front side in the depth direction and is provided with the wiring surface. A connection cable having one end wired in the width direction with respect to the wiring section and the other end side wired in the width direction with respect to the light source section, and electrically connecting the power supply section and the light source section. 3. The illumination device of claim 2, comprising: a.

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