JP7022333B2 - lighting equipment - Google Patents

Description

Embodiments of the present invention relate to lighting equipment.

In recent years, LED lighting fixtures that use LEDs (Light Emitting Diodes) as light sources have become widespread. Lighting equipment using LEDs has the advantage of generating less heat than those using halogen lamps, but it is known that when the amount of heat generated increases, the amount of light decreases and the life is adversely affected. For example, spotlights for stages and studios, which are examples of lighting fixtures that use LEDs, generate more heat due to the increasing output of light sources, and the larger radiators make the entire lighting fixtures larger. Tends to grow in size. Therefore, for such a lighting fixture, efficient heat dissipation measures are desired.

Japanese Unexamined Patent Publication No. 2016-110934

An object to be solved by the embodiment of the present invention is to provide a small-sized lighting fixture having good heat dissipation.

The lighting fixture according to the embodiment of the present invention includes a main body, a light source unit provided on the main body to irradiate light on the front surface side, and the light source unit arranged on the front surface side of the light source unit so as to be linearly movable in the front-back direction. From the first heat radiation unit connected to the lens unit that controls the light distribution of the light emitted from the unit, the first heat radiation unit disposed on the back side of the light source unit, and the first heat radiation unit. A lighting fixture comprising a second heat radiating portion provided in a space between the lens portion on the front surface side and the side surface of the main body .

According to the embodiment of the present invention, it is possible to provide a small-sized lighting fixture having good heat dissipation.

It is a perspective view which shows the appearance of the luminaire which is an embodiment of this invention. It is a perspective view which shows the internal mechanism of the luminaire which is an embodiment of this invention. It is sectional drawing which follows the A plane in FIG. 1 of the luminaire which is an embodiment of this invention.

Hereinafter, the lighting fixture according to the embodiment of the present invention will be described with reference to FIGS. 1 to 3.

As shown in FIGS. 1 to 3, the lighting fixture according to the embodiment of the present invention has a main body 1 which is a housing and a light source unit provided inside the main body 1 so as to irradiate light toward the front side of the main body 1. 2, the lens unit 3 that controls the light distribution of the light emitted from the light source unit 2, the first heat dissipation unit 4 that is attached to the back side of the light source unit 2 to dissipate heat, and the heat from the first heat dissipation unit 4. A second heat dissipation unit 5 thermally connected by a pipe 6, a power supply unit 7 that supplies power to the light source unit 2 to light it, an arm unit 8 that is attached to the main body 1 and supports the main body 1, and a main body. 1 It is provided with a moving mechanism 9 provided inside and capable of linearly moving the lens portion 3 in the front-back direction.

The main body 1 is a metal housing having an opening on the front side as shown in FIG. 1 and whose front-back direction is the longitudinal direction. On the outer periphery of the opening on the front surface, banders 11 for adjusting the light distribution of the light emitted from the inside of the main body 1 are provided at four locations on the top, bottom, left, and right. The main body 1 has a ventilation hole 13 formed by mesh processing or the like on a housing surface (one or more of the upper surface, the side surface, the lower surface, and the back surface) on the back surface side of the light source unit 2.

The main body 1 is formed of a member having excellent light-shielding properties so that the light emitted from the light source unit 2 does not leak from other than the opening provided on the front surface side.

In addition, in the stage, studio, etc., preparation work is performed to change and arrange a plurality of lighting fixtures according to the program or program. The main body 1 can change the posture of the luminaire by hooking the luminaire with an operation rod (not shown) that controls the direction of the luminaire at a high place when the luminaire is charged. It has a hooking portion 12. The hook portion 12 is a substantially U-shaped handle or the like provided on the back surface of the main body 1. It is desirable that the hooking portion 12 is provided near the end portion of the main body 1 in the front-back direction. The lighting fixture is provided so that the main body 1 can rotate around the bolt portion 83 described later as a central axis.

As shown in FIGS. 2 and 3, the light source unit 2 has a light emitting unit 21 in which a light emitting element such as an LED is mounted on the front surface side of a base unit 41 described later by a mounting method such as COB (Chip On Board). The light source unit 2 is fixedly provided inside the main body 1 and is arranged so that the irradiation direction of the light from the light emitting unit 21 faces substantially the front direction. In addition, FIG. 2 is one of a power supply unit 7, an arm unit 8, a part of the main body 1, a part of the lens unit 3, and a second heat radiation unit 5 in order to show the internal structure of the lighting equipment according to the embodiment of the present invention. It is a perspective view excluding a part. The light source unit 2 may be provided with a reflector that reflects the light emitted from the light emitting unit 21, a lens that controls the light emitted from the light emitting unit 21, and the like.

As shown in FIGS. 2 and 3, the lens unit 3 has an optical member 31 such as a Fresnel lens or a convex lens capable of controlling the light distribution of the light emitted from the light emitting unit 21, and is screwed to the outer peripheral edge of the optical member 31 or the like. It has a lens frame 32 which is attached by the lens frame 32 and fixes the optical member 31. The optical member 31 is provided so as to face the front surface side of the light source unit 2. Note that FIG. 3 is a cross-sectional view taken along the A plane of FIG. 1 excluding a part of the main body 1 and a part of the arm portion 8. The lens frame 32 is a flat plate-shaped member provided below the optical member 31 so as to face the light emitting portion 21. The optical member 31 and the lens frame 32 are provided inside the main body 1.

As shown in FIG. 3, the lens frame 32 is connected to a moving mechanism 9 described later and is arranged so as to be able to move substantially linearly in the front-back direction inside the main body 1.

Further, as shown in FIG. 2, the first heat radiating portion 4 includes a base portion 41 connected to the back side of the light emitting portion 21 and a heat radiating fin portion 42 provided by being thermally connected to the back side of the base portion 41. Have. The heat radiating fin portion 42 is formed by connecting a plurality of heat radiating fins, which are substantially rectangular metal plates, in parallel to the base portion 41 having a surface facing the light emitting portion 21. The plurality of heat radiating fin portions 42 are provided so as to extend a plane in the front-back direction, and are arranged so that the longitudinal direction intersects the front-back direction at right angles in the vertical direction. The first heat radiating unit 4 is arranged so that outside air can be taken in or radiated to the outside air from the ventilation holes 13 provided on the wall surface of the housing of the main body 1. The first heat radiating portion 4 is arranged so as to be separated from the back surface of the main body 1.

The first heat radiating portion 4 is provided with a heat pipe 6 having one end side connected so as to be embedded in the base portion 41 and the other end side crossing a plurality of heat radiating fin portions 42. The heat pipe 6 is a member excellent in heat transport, which is sealed by putting a hydraulic fluid inside a metal tubular member. The heat pipe 6 is provided so as to enable heat transfer between a member having contact with one end side having a different temperature and a member having contact with one end side. A plurality of heat pipes 6 are provided, and the plurality of heat pipes 6 are attached to the first heat radiating portion 4 so as to radiate from the base portion 41 toward the back surface side of the base portion 41 in a side view. That is, in the first heat radiation unit 4, the hydraulic fluid evaporates inside the heat pipe 6 on one end side connected to the relatively high temperature base unit 41 connected to the light emitting unit 21 which is a heat source. The evaporated hydraulic fluid moves through the internal space of the heat pipe 6 to the other end side, which is the heat radiation fin side at a relatively low temperature, and is condensed there to become a liquid again. Heat is transferred from the base portion 41 to the heat radiating portion 4 due to the movement of these internal hydraulic fluids.

The second heat radiating portion 5 is a plurality of metal radiating fins formed to form a substantially parallelogram in front view connected to the base portion 41 by the heat pipe 6. The second heat radiating unit 5 is provided on the front side of the first heat radiating unit 4. The second heat radiating portion 5 is connected so that one end is embedded in the base portion 41 and the other end is connected to the base portion 41 by a heat pipe 6 provided so as to penetrate the second heat radiating portion 5. That is, the second heat radiating unit 5 is connected to the first heat radiating unit 4 by the heat pipe 6 so that heat is transferred from the base portion 41 having a relatively high temperature to the second heat radiating unit 5 having a relatively low temperature. To.

Further, as another embodiment, the second heat radiating unit 5 may be thermally connected to the first heat radiating unit by a member other than the heat pipe.

As shown in FIGS. 2 and 3, the second heat radiating unit 5 is provided at a position that does not overlap with the range in which the viewing lens unit 3 is moved by the moving mechanism 9. Further, as shown in FIG. 2, the second heat radiating unit 5 is visually provided over the moving range of the lens unit 3 in the front-back direction.

The second heat radiating portion 5 is provided so as to be paired on both upper side surfaces inside the main body 1. In this case, the second heat radiating portion 5 may be provided so as to be paired on both lower side surfaces, or may be provided at any one of the upper and lower four corners or a plurality of portions thereof.

The second heat radiating unit 5 is penetrated so as to cross through the heat pipe 6, and the hydraulic fluid inside the heat pipe 6 evaporated by the heat of the first heat radiating unit 4 moves to the second heat radiating unit 5 side. Heat is transported to the heat dissipation unit 5 of 2. When heat is transferred from the heat pipe 6 to the second heat radiating unit 5, the working liquid inside the heat pipe 6 condenses again to become a liquid, and moves to the first heat radiating unit 4 side. By these mechanisms, the heat pipe 6 transfers heat from the first heat radiating unit 4 to the second heat radiating unit 5. Further, the second heat radiating unit 5 may be in contact with the inner wall of the main body 1.

1 and 2 show an embodiment in which the first heat radiating unit 4, the second heat radiating unit 5 and the heat pipe 6 are provided inside the main body 1, but as another embodiment, the first embodiment is shown. The heat radiating unit 4 of 1 and the second heat radiating unit 5 and the heat pipe 6 connecting them may be provided so as to be exposed to the outside so as not to be covered by the housing of the main body 1. In that case, improvement in heat dissipation performance can be expected.

Further, in that case, for example, the second heat radiating unit 5 may be provided so as to stand on any one of the upper surface and the lower surface of the main body 1, both side surfaces, or any plurality of surfaces thereof. At this time, by arranging a plurality of heat radiation fins of the second heat radiation unit 5 in a direction in which the air flow flows in the front-back direction, the entire lighting fixture can be efficiently cooled, and the heat radiation performance can be expected to be improved.

Further, in that case, a protective member for preventing deformation of the first heat radiation unit 4, the second heat radiation unit 5, and the heat pipe 6 is provided on the outside of the first heat radiation unit 4, the second heat radiation unit 5, and the heat pipe 6, respectively. It may be provided.

Further, the second heat radiating portion 5 may be formed so as to form a substantially right triangle in front view, for example, and the corner portions having a substantially right angle may be provided so as to be aligned with the internal corners of the main body 1.

The power supply unit 7 is provided on the bottom surface side of the main body 1 and includes a control board for lighting the light emitting unit 2 in a housing separate from the main body 1. The power supply unit 7 is electrically connected to an external power source to control lighting of the light emitting unit 2. The power supply unit 7 has a connector unit 71 provided with a terminal hole for connecting to an external power source, and a connection member 72 for connecting the main body 1 and the upper surface of the power supply unit 7 apart from each other.

Further, the power supply unit 7 has a connector 73 capable of electrically connecting the connector unit 71 and an external power source. The connector 73 may be provided integrally with the luminaire, or may be detachably provided as a separate member.

As shown in FIG. 1, the arm portion 8 is formed in a substantially U shape. It has a pair of rising portions 81 attached to the side surface of the main body 1 and extending upward, and a horizontal portion 82 formed so as to extend the upper ends of the pair of rising portions 81 in the side surface direction. Further, in the arm portion 8, the bolt portion 83 is screwed toward the side surface of the main body 1 and the handle portion 84 is tightened, so that the main body 1 centering on the bolt portion 83 and the handle portion 84 (see FIG. 3) in the side view. Rotation is blocked. By loosening the handle portion 84, the main body 1 can rotate again.

Further, the arm portion 8 has a mounting portion 85 extending upward from the substantially center of the horizontal portion 82. The mounting portion 85 is mounted on a support member such as a clamp hanger or a tripod to support and fix the device.

The configuration and operation of the moving mechanism 9 of the lighting fixture according to the embodiment of the present invention will be described with reference to FIGS. 2 and 3.

The moving mechanism 9 is slidable along the inner wall of the main body 1 by connecting a shaft portion 91 that is provided in the front-back direction inside the main body 1 and is rotatable in the circumferential direction of a columnar shape and a lens frame 32. The pair of rail portions 93 provided in the lens frame 93, the pin 94 whose tip is in contact with the inside of the spiral groove 911 provided on the outer peripheral surface of the shaft portion 91, and the pin 94 are fixedly connected to the lens frame 32 and connected to the inner peripheral surface side. It has a tubular portion 92 provided so as to penetrate the shaft portion 91. The tubular portion 92 is fixedly provided below the lens frame 32. Further, the lens frame 32 is attached to the shaft portion 91 via the tubular portion 92. Further, the lens frame 32 is attached to the rail portion 93 slidable in the longitudinal direction of the main body 1 inside the main body 1.

The rail portion 93 has a long-shaped sliding portion that is connected to the lens frame 32 by screwing or the like and whose front-back direction is the longitudinal direction, and a front-back direction in which the sliding portion can slide along the inner peripheral surface. It has a slide receiver formed in a longitudinal shape and a sheath shape in the longitudinal direction. Further, the lens frame 32 is slidably attached to a guide portion 95 which is a pair of columnar members provided below the rail portion 93 and extending in the longitudinal direction of the main body 1.

The shaft portion 91 is provided so as to penetrate to the outside of the back surface of the main body 1. On the rearmost surface of the shaft portion 91, an operation unit (not shown) capable of rotating the shaft portion 91 in the circumferential direction from the outside of the lighting fixture is provided.

The spiral groove 911 provided in the shaft portion 91 is provided at least on the front side of the reflector 23 and on the back side of the front side opening of the main body 1.

The rail portion 93 and the guide portion 95 are connected to the lens frame 32. The rail portion 93 and the guide portion 95 function as guides when the lens frame 32 and the optical member 31 slide along the shaft portion 91, prevent the movement direction from swaying, and enable smooth sliding. ..

Further, the pair of rail portions 93 and the pair of guide portions 95 are formed to have a width shorter than the total length in the lateral direction on the inner surface of the connected main body 1. The rail portion 93 and the guide portion 95 may be provided on, for example, the inner wall of the upper surface or the inner wall of the lower surface of the main body 1, and may not be formed in pairs.

For example, when the lens unit 3 is linearly moved toward the rear surface, the operation unit is rotated clockwise when viewed from the rear surface side. By rotating the shaft portion 91 in conjunction with the operation portion, the position of the pin 94 moves in the rear direction along the spiral groove 911 provided in the shaft portion 91. At this time, the cylinder portion 92, the lens frame 32, and the optical member 31 move in the rearward direction in conjunction with the pin 94. If the lens unit 3 is to be moved in the front direction, the operation unit may be rotated counterclockwise.

By adjusting the position of the optical member 31 in the front-back direction by the moving mechanism 9, the user can arbitrarily change the light distribution control of the light emitted from the light emitting unit 21.

The moving mechanism 9 may be a mechanism that enables movement in the anterior-dorsal direction, and may be a mechanism that bends and stretches a bellows-shaped member, a mechanism that uses a lattice structure, a telescopic structure, or the like.

According to the lighting fixture according to the embodiment of the present invention, in addition to the first heat radiating unit 4 provided on the back surface of the light source unit 2, the second heat radiating unit is thermally connected to the front side of the first heat radiating unit 4. By providing the portion 5, the heat dissipation performance can be provided without forming the first heat dissipation portion 4 long in the rear direction, so that there is an effect that the lighting equipment can be miniaturized.

Further, by providing the second heat radiating unit 5 at a position around the moving mechanism 9 and not overlapping with the moving range of the moving mechanism 9, the internal space of the main body 1 can be effectively used. In addition, since the internal space of the main body 1 can be efficiently utilized, it is possible to miniaturize the lighting equipment without deteriorating the heat dissipation performance.

Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other embodiments, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and variations thereof are included in the scope and gist of the invention, and are also included in the scope of the invention described in the claims and the equivalent scope thereof.

1 ... Main body
2 ... Light source
3… Lens part
4 ... First heat dissipation part
5 ... Second heat dissipation part
6 ... heat pipe
7 ... Power supply
8 ... Arm
9 ... Movement mechanism

Claims (3)

With the main body;
With a light source unit provided on the main body and irradiating light on the front side;
With a lens unit that is arranged on the front side of the light source unit so as to be linearly movable in the front-back direction and controls the light distribution of the light emitted from the light source unit;
With the first heat dissipation part arranged on the back side of the light source part;
A second heat radiating portion connected to the first heat radiating portion and provided in a space between the lens portion on the front side of the first heat radiating portion and the side surface of the main body ;
A lighting fixture characterized by being equipped with. The lighting fixture according to claim 1, wherein the second heat radiating portion is provided inside the main body. The lighting fixture according to claim 1 or 2, wherein the first heat radiating unit and the second heat radiating unit are connected by a heat pipe.

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