JP2015144041A - Floodlight device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a floodlight device capable of protecting a radiator from a flying object and a floating object.SOLUTION: A floodlight device 100 according to one embodiment of the invention includes: a housing 10; an optical unit 20; a radiator 5; and a guard member 7. The housing 10 includes a first surface 111 and a second surface 112. The optical unit 20 is disposed on the first surface 111 and includes multiple light emitting elements. The radiator 5 is disposed on the second surface 112. The guard member 7 includes: an internal space which stores the radiator 5; and a through-hole which allows the internal space to communicate with outer air. The guard member 7 is disposed on the second surface 112.

Description

  The present invention relates to a floodlighting illumination device installed in, for example, an illumination tower.

  For example, a lighting tower composed of a plurality of projectors is used for lighting in a baseball field, a soccer field, an athletic field, and the like. As a light source of a projector, a discharge lamp such as a metal halide lamp is widely used. Recently, an illumination device using a light emitting diode (LED) as a light source is known. For example, Patent Document 1 discloses a lighting device including a housing, a plurality of light emitting elements (LEDs) disposed on the front surface of the housing, and a plate-like heat radiation fin provided on the back surface of the housing. ing.

JP 2013-243033 A

  The projector includes a radiator for protecting the device from heat generated from the light source. However, in a projector installed outdoors or in a high place such as a lighting tower, damage to the radiator due to contact with flying objects or floating objects becomes a problem. For example, in an illumination tower installed outdoors, there is a risk that the heatsink may be damaged due to collision with flying objects during strong winds. Also, in lighting towers such as baseball stadiums, balloons used in events, etc. are melted by contact with a radiator, and the melted substance remains attached to the surface of the heat radiation part, so that the desired heat radiation characteristics can be obtained. There is a risk that it will not be obtained.

  In view of the circumstances as described above, an object of the present invention is to provide a floodlighting illumination device capable of protecting a radiator from flying objects and floating objects.

In order to achieve the above object, a floodlight illumination device according to one embodiment of the present invention includes a housing, an optical unit, a radiator, and a guard member.
The housing has a first surface and a second surface.
The optical unit is disposed on the first surface and includes a plurality of light emitting elements.
The heat radiator is disposed on the second surface.
The guard member has an internal space that houses the radiator and a through hole that communicates the internal space with outside air, and is disposed on the second surface.

  In the above-described floodlighting device, the radiator is disposed inside the guard member, so that it can be effectively protected from collision or contact with flying objects and floating objects. Moreover, since the through hole is provided in the guard member, the radiator can be communicated with the outside air through the through hole. Therefore, according to the said floodlighting apparatus, the desired heat dissipation characteristic can be maintained for a long time, and the stable light emission operation | movement of an optical unit can be ensured.

The floodlight illumination device may further include a terminal unit. The terminal unit is configured to supply power to the optical unit. The guard member may be disposed between the second surface and the terminal unit.
Thereby, it is possible to prevent the connection between the terminal unit and the commercial power source from being obstructed by the guard member.

The guard member may further include a side peripheral surface fixed to the housing and a back surface that is connected to the side peripheral surface and faces the terminal unit. The terminal unit may further include a connecting pipe that penetrates the internal space and the back surface and is connected to the second surface.
According to this configuration, since the connecting pipe passes through the back surface of the guard member, even when the guard member is detached from the casing, the connecting pipe prevents the guard member from falling off the casing.

The housing may further include a through hole communicating with the inside of the connection pipe. The optical unit may further include a wiring cable connected to the terminal unit via the through hole and the connection pipe.
Thereby, electrical connection between each light emitting element and the terminal unit can be realized without impairing the light distribution characteristics of the optical unit.

  The said guard member will not be specifically limited if it is a structure which has a through-hole, For example, it is comprised with punch metal. Thereby, the required intensity | strength requested | required as a guard member is ensured.

The optical unit may be composed of an assembly of a plurality of light emitting devices. The plurality of light emitting devices each include, for example, a plurality of light emitting elements and a lens substrate.
The plurality of light emitting elements are arranged in the first plane.
The lens substrate has a plurality of lens portions each including a top portion, a light emitting surface, and a side peripheral surface. The top portion faces each of the plurality of LEDs. The said side peripheral surface is provided between the said top part and the said light-projection surface, and has the rotary body shape of the surroundings of the axial center of the said top part. The lens substrate is formed of a molded body of a light transmissive material.

The optical unit may be equally divided in the circumferential direction within the first plane by the plurality of light emitting devices. In this case, each of the plurality of light emitting devices has a polygonal shape.
Thereby, a plurality of light emitting devices can be efficiently integrated.

Each of the casing and the guard member may have a polygonal shape.
This makes it possible to efficiently array a plurality of the floodlighting devices in the vertical and horizontal directions.

  The plurality of light emitting elements are typically composed of a plurality of LEDs. In addition to this, the light-emitting element may be configured by an organic EL element, an inorganic EL element, or the like.

  As described above, according to the present invention, the radiator can be protected from flying objects and floating objects, and the desired heat radiation characteristics can be maintained over a long period of time.

It is a perspective view showing the whole floodlighting illumination device concerning one embodiment of the present invention. It is a front view of the said floodlighting apparatus. It is a side view of the said floodlighting apparatus. It is a top view of the floodlight illumination device. It is a rear view of the said floodlighting apparatus. It is a disassembled perspective view of the principal part of the said floodlighting apparatus. It is the sectional view on the AA line in FIG. It is a top view of the optical unit in the said floodlighting apparatus. It is a disassembled perspective view of the light-emitting device in the said optical unit. It is a figure which shows the lens board | substrate in the said light-emitting device, A is a front view, B is the side view seen from one direction, C is the side view seen from the other direction. It is a figure which shows the lens part in the said lens board | substrate, A is a schematic perspective view, B is a schematic sectional drawing, C is a ray tracing figure which permeate | transmits a lens part. It is a figure which shows the structure of the guard member in the said floodlighting apparatus, A is a perspective view, B is a rear view.

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

  1 to 5 show an entire floodlighting apparatus according to an embodiment of the present invention. FIG. 1 is a perspective view, FIG. 2 is a front view, FIG. 3 is a right side view, and FIG. FIG. 5 is a rear view. 6 is an exploded perspective view of the main part of the floodlight illumination device, and FIG. 7 is a cross-sectional view taken along line AA in FIG. In each figure, the X axis, the Y axis, and the Z axis indicate three axial directions orthogonal to each other, the X axis corresponds to the left-right direction, the Y axis corresponds to the front-rear direction, and the Z axis corresponds to the height direction.

[Overall configuration of floodlighting device]
The floodlighting illumination device 100 according to the present embodiment includes a housing 10, an optical unit 20, a radiator 5, a terminal unit 6, a guard member 7, and a base 9.

(Casing)
The housing 10 is made of a metal material, and includes a main plate portion 11 and a pair of protruding piece portions 12.

  The main plate part 11 has a first surface 111 on the front side and a second surface 112 on the back side, and is formed in a polygonal shape (hexagonal shape in the present embodiment) as a whole. The pair of projecting piece portions 12 are formed from the peripheral edges of two side portions facing each other in the X-axis direction in the main plate portion 11 toward the back side. The pair of projecting piece portions 12 is configured as a connection portion that connects the housing 10 and the base 9 to each other.

(base)
The base 9 is configured as a fixed part for installing the housing 10 on an illumination tower or an illumination stand. The base 9 has a pair of leg portions 91 connected to the pair of protruding piece portions 12 of the housing 10.

  Each leg 91 is connected to the protruding piece 12 so as to be rotatable about the X axis. The rotation operation of the housing 10 is performed using a lever 92 provided on each leg portion 91. The rotation range is not particularly limited, and the present embodiment is configured to be adjustable within a range of an elevation angle of 60 ° and a depression angle of 80 ° with respect to the horizontal direction. Further, the base 9 is configured to be capable of rotating around the Z axis with respect to the illumination tower or the illumination stand.

  As shown in FIG. 4, the base 9 is provided with a mounting hole 93 through which a fixed shaft for the illumination tower or the illumination stand is inserted. The base 9 is configured to be rotatable over a predetermined angle range around the Z axis around the fixed axis. The rotation range is not particularly limited, and in the present embodiment, the rotation range is configured to be adjustable in the range of 90 ° on the left and right. An arcuate guide hole 94 that restricts the rotation range of the base 9 is provided around the mounting hole 93.

(Optical unit)
FIG. 8 is a plan view of the optical unit 20. The optical unit 20 is configured by an aggregate of a plurality of light emitting devices 21 arranged on the first surface 111 of the housing 10.

  The optical unit 20 is equally divided in the circumferential direction by a plurality (six in this embodiment) of light emitting devices 21 arranged in a ring on the first surface 111 of the housing 10. Each light-emitting device 21 is formed in a polygonal shape (in the present embodiment, approximately triangular), and is arranged in an annular shape to constitute a polygonal (in the present embodiment, approximately hexagonal) optical unit 20. As a result, the plurality of light emitting devices 21 can be efficiently integrated.

  The plurality of light emitting devices 21 have the same configuration. The light emitting device 21 has a laminated structure of an LED substrate 22 on which a plurality of LEDs are mounted and a lens substrate 23 having a plurality of lens portions that collect light emitted from the plurality of LEDs.

  The optical unit 20 is covered with a transparent cover 1 installed on the first surface 111 of the housing 10. The cover 1 is fixed to the first surface 111 of the housing 10 via the seal ring 2 via a plurality of bolts.

  9 is an exploded perspective view showing the configuration of the light emitting device 21, FIG. 10A is a front view of the lens substrate 23, FIG. 10B is a side view as seen from one direction of the lens substrate 23, and FIG. It is the side view seen from.

  The light emitting device 21 includes an LED substrate 22, a lens substrate 23, and a heat dissipation sheet 24. The light emitting device 21 is configured by sequentially stacking a heat dissipation sheet 24, an LED substrate 22, and a lens substrate 23 on the first surface 111 of the housing 10. The LED substrate 22, the lens substrate 23, and the heat dissipation sheet 24 are formed in a substantially triangular shape having the same size when viewed from the front direction (Y-axis direction).

  The LED substrate 22 includes a plurality of LEDs 221 (light emitting elements) and a wiring substrate 222 that supports the plurality of LEDs 221.

  The plurality of LEDs 221 are typically constituted by LED lamps or LED chips, and in this embodiment, the light emitting portions are constituted by LED chips covered with a dome-shaped (convex) lens portion. The plurality of LEDs 221 are mounted on the wiring board 222 at a predetermined interval with each light emitting surface facing in the front direction (+ Y direction).

  The wiring board 222 is composed of a single-layer or multilayer wiring board based on metal, ceramic, or synthetic resin. Through holes 223 through which screw members for fixing the lens substrate 23 and the heat dissipation sheet 24 to each other pass are provided at each corner and predetermined position in the plane of the wiring board 222. A connector 224 connected to a wiring cable for supplying power to each LED 221 is mounted on one top portion of the wiring board 222.

  The lens substrate 23 has a plurality of lens portions 231 disposed to face each of the plurality of LEDs 221 on the LED substrate 22 and is formed of a molded body of a translucent resin material.

  The lens substrate 23 includes a substantially triangular main plate portion 232 parallel to the XZ plane, a side wall portion 233 hanging from each edge of the main plate portion 232 toward the LED substrate 22, and an XZ connected to the side wall portion 233. It is formed in a substantially shallow dish shape having three corner portions 234 parallel to the plane.

  The plurality of lens portions 231 are arranged in the surface of the main plate portion 232 so as to correspond to the LEDs 221, and are formed in a bullet shape protruding from the main plate portion 232 toward the LED substrate 22. The surface of the lens portion 231 is in contact with outside air (air).

  11A is a schematic perspective view of the lens unit 231, FIG. 11B is a schematic cross-sectional view of the lens unit 231, and FIG. 11C is a tracking diagram of light rays that pass through the lens unit 231.

  The plurality of lens portions 231 each have a top portion 231a, a light emitting surface 231b, and a side peripheral surface 231c. The top portion 231a faces each of the plurality of LEDs 221. The light emission surface 231b is formed flush with the surface of the main plate portion 232 and has a bottomed hole 231d along the axis 231y direction passing through the top portion 231a. The side peripheral surface 231c is provided between the top portion 231a and the light emitting surface 231b, and has a rotating body shape around the axis.

  The LED 221 facing the top portion 231a of the lens portion 231 has a light emitting surface 221p that is convex toward the top portion 231a as shown in FIG. 11C. The light emitting surface 221p is configured by, for example, a lens surface formed on the light emitting portion of the LED 221. On the other hand, the top portion 231a has a concave surface portion P1 having a shape facing the light emitting surface 221p and corresponding to the light emitting surface 221p. Thereby, the efficiency of capturing light from the LED 221 into the lens unit 231 is increased, and the amount of light emitted from the light exit surface 231b can be increased.

  The bottomed hole 231d is a round hole formed at a predetermined depth from the light emitting surface 231b toward the top 231a. In the present embodiment, the bottom surface of the bottomed hole 231d is provided with a convex surface portion P2 having a shape that protrudes toward the light emitting surface 231b. By providing the convex surface portion P2 at the bottom of the bottomed hole 231d, a condensing function of light incident on the bottom of the bottomed hole 231d is obtained. Thereby, since the emitted light quantity of a front direction (+ Y direction) increases, the light projection illumination apparatus for narrow angles can be comprised, for example.

  Further, since the bottomed hole 231d is formed along the axis of the lens portion 231 passing through the top portion 231a, the light is emitted from the light emitting surface 231b without hindering the condensing function of the light incident from the top portion 231a. can do.

  The shape of the side peripheral surface 231c is not particularly limited, and can be set as appropriate according to the target irradiation range of emitted light. In the present embodiment, the side peripheral surface 231c has a curved body shape (typically a quadratic curved surface such as a paraboloid) formed of a rotation curve centered on the axis 231y. With this configuration, for example, the present invention can be applied to narrow-angle light distribution illumination with a beam opening of less than 30 °.

  The lens substrate 23 further has a plurality of boss portions 235 fixed to the LED substrate 22. The boss portions 235 are provided at the corner portion 234 and the central portion of the main plate portion 232, and screw insertion holes 235a aligned with the through holes 223 on the LED substrate 22 are formed in the boss portions 235, respectively. Yes.

  Each boss portion 235 protrudes toward the LED substrate 22 from the top portion 231 a of the lens portion 231. Thereby, when the lens substrate 23 is fixed to the LED substrate 22, the top portions 231 a of the plurality of lens portions 231 face each other with the LED substrate 22 through a predetermined gap. At this time, as shown in FIG. 11C, the LED 221 is accommodated in the concave surface portion P1 so that the light emitting surface 221p faces the concave surface portion P1 of the top portion 231a with a gap.

  The corner portion 234 is further provided with positioning pins 236 provided in the vicinity of the boss portion 235. The positioning pins 236 protrude from the corner part 234 toward the LED board 22 with a larger protrusion amount than the boss part 235, and are configured to be fitted in the positioning holes 225 on the LED board 22, respectively.

  The lens substrate 23 having the above-described configuration is formed of an injection molded body made of a translucent resin material. The translucent resin material which comprises the lens board | substrate 23 is not specifically limited, In this embodiment, it is comprised with an acrylic resin. Accordingly, a lens substrate having high mechanical strength and excellent weather resistance can be configured.

  The heat radiating sheet 24 is made of a resin having a predetermined thickness and is disposed between the LED substrate 22 and the first surface 111 of the housing 10. The heat dissipation sheet 24 is fitted with screw holes 241 aligned with the through holes 223 of the LED substrate 22 and screw insertion holes 235a of the lens substrate 23, and alignment pins 236 of the lens substrate 23 aligned with the positioning holes 225 of the LED substrate 22. A mating hole 242 is formed. The heat dissipation sheet 24 is fixed to the first surface 111 of the housing 10 via a plurality of screws in a state where the heat dissipation sheet 24 is laminated with the LED substrate 22 and the lens substrate 23.

(Heatsink)
The radiator 5 is disposed on the second surface 112 of the housing 10. The radiator 5 is for cooling the optical unit 20 to a predetermined temperature or lower, and in this embodiment, a heat pipe heat sink is employed. Thereby, size reduction of the heat radiator 5 can be achieved. Of course, the present invention is not limited to this, and the heat radiator 5 may be constituted by a heat sink having another structure, for example, a structure having only heat radiating fins.

(Guard member)
The guard member 7 is disposed around the radiator 5 so as to protect the radiator 5 from the collision of flying objects or the contact of floating substances. 12A is an overall perspective view of the guard member 7, and FIG. 12B is a rear view of the guard member.

  The guard member 7 is formed of a metal box having an internal space 71 for accommodating the radiator 5 and having one end opened. The guard member 7 has a side peripheral surface 72 and a back surface (top plate) 73 that is connected to the side peripheral surface 72 and faces the terminal unit 6. The side peripheral surface 72 and the back surface 73 are provided with a plurality of through holes 74 that allow the internal space 71 to communicate with the outside air.

  The back surface 73 of the guard member 7 is formed in a polygonal shape (in this embodiment, a hexagonal shape), and the side peripheral surface 72 is a plurality of identical heights bent at right angles to the front direction from the respective edge portions of the back surface 73. It is composed of a flat plate. The plurality of plate members constituting the side peripheral surface 72 are joined to each other by welding, for example.

  The plurality of through holes 74 are configured by round holes provided at a predetermined pitch, but the shape of the holes is not limited thereto, and may be configured by, for example, square holes. In the present embodiment, the guard member 7 is made of punch metal. The metal material which comprises the guard member 7 is not specifically limited, In this embodiment, an aluminum alloy is employ | adopted. Thereby, weight reduction of the guard member 7 can be achieved. The surface of the guard member 7 may be plated for rust prevention.

  The guard member 7 is fixed to the second surface 112 of the housing 10. In the present embodiment, the guard member 7 is screwed to the housing 10 via a plurality of attachment pieces 75 provided at predetermined positions on the side peripheral surface 72. The guard member 7 is fixed to the housing 10 without contact with the radiator 5.

  The guard member 7 is disposed between the housing 10 and the terminal unit 6. A rectangular opening 73 a into which the connecting pipe 61 of the terminal unit 6 can be inserted is provided at a substantially central portion of the back surface 73 of the guard member 7.

(Terminal unit)
The terminal unit 6 includes a main body portion 60 and a connection pipe 61. The main body 60 is disposed outside the guard member 7 and is connected to the second surface 112 of the housing 10 via a metal connecting pipe 61 and an auxiliary plate 62 as shown in FIG.

  The main body 60 is connected to an external power source (commercial power source), and supplies necessary power to the plurality of light emitting devices 21 constituting the optical unit 20. The connecting pipe 61 passes through the internal space 71 of the guard member 7 and the opening 73 a of the back surface 73, and is connected between the second surface 112 of the housing 10 and the main body 60.

  On the other hand, a through hole 113 communicating with the inside of the connection pipe 61 is formed at the center of the housing 10, and a wiring cable is connected to each light emitting device 21 through the through hole 113 and the inside of the connection pipe 61. It is electrically connected to a terminal board arranged inside the part 60. Thereby, electrical connection between each light emitting device 21 and the main body 60 can be realized without impairing the light distribution characteristics.

[Operation of floodlighting device]
In the floodlight illumination device 100 of the present embodiment configured as described above, the plurality of light emitting devices 21 constituting the optical unit 20 are turned on simultaneously. In each light emitting device 21, light emitted from the plurality of LEDs 221 on the LED substrate 22 is collected by the plurality of lens portions 231 of the opposing lens substrate 23, passes through the cover 1, and is irradiated to a predetermined irradiation region. .

  As shown in FIG. 11C, the light emitted from each LED 221 enters the inside of the lens portion 231 from the top portion 231a (concave surface portion P1) of the lens portion 231, and is emitted from the light emitting surface 231b to the outside air. The outgoing light L from the light outgoing surface 231b includes outgoing light L1 going in the front direction (+ Y direction) and outgoing light L2 going in a slightly oblique direction with respect to the front direction. The emitted light L1 mainly includes light totally reflected by the side peripheral surface 231c and light transmitted through the bottom portion (convex surface portion P2) of the bottomed hole 231d. On the other hand, the emitted light L2 is mainly composed of light that reaches the light emitting surface 231b linearly from the top 231a.

  The light distribution of the light emitted from the light emitting surface 231b is adjusted mainly by the cross-sectional shape of the side peripheral surface 231c, thereby realizing desired light distribution control. In the present embodiment, the amount of the outgoing light L1 is larger than the amount of the outgoing light L2, and the outgoing angle of the outgoing light L2 from the light outgoing surface 231b (the angle formed between the normal line of the outgoing light surface 231b and the outgoing light L2). ) Is optimized such that the lens portion 231 is less than or equal to a predetermined value. Accordingly, it is possible to emit a sufficient amount of light in a predetermined narrow angle range while increasing the amount of light emitted in the front direction.

  In the present embodiment, since the plurality of LEDs 221 on the LED substrate 22 and the plurality of lens portions 231 on the lens substrate 23 are provided corresponding to each other, uniform light can be emitted within the surface of the lens substrate 23. it can. Further, since the optical unit 20 is configured by combining a plurality of light emitting devices 21, a floodlighting device having a desired aperture can be easily configured.

  On the other hand, the radiator 5 cools the optical unit 20 to a predetermined temperature or lower in order to stably maintain the operation of the optical unit 20. For this reason, the heat radiator 5 may become high temperature of 100 degreeC or more.

  In the floodlighting illumination device 100 of the present embodiment, the radiator 5 is disposed inside the guard member 7. For this reason, the radiator 5 is protected by the guard member 7 from collision with flying objects during strong winds. Thereby, the fall of the thermal radiation characteristic resulting from damage to the heat radiator 5 is prevented.

  The radiator 5 is protected from contact with floating objects such as balloons by the guard member 7. Thereby, melting of the balloon and contact of the melted product due to contact with the radiator 5 are avoided, so that the desired heat radiation characteristics of the radiator 5 are maintained. In addition, since the surface of the guard member 7 is colder than the radiator 5 (for example, around 60 ° C.), there is no possibility that the balloon is dissolved by contact with the guard member 7.

  As described above, according to the present embodiment, the guard member 7 can protect the radiator 5 from damage or fouling due to contact with flying objects or floating objects. Since the guard member 7 is provided with the through hole 74, the radiator 5 can be communicated with the outside air through the through hole 74. Therefore, according to the floodlighting illumination device 100 of the present embodiment, the desired heat dissipation characteristics of the radiator 5 can be maintained over a long period of time, and the stable light emitting operation of the optical unit 20 can be ensured.

  In addition, since the main body 60 of the terminal unit 6 is disposed outside the guard member 7, it is possible to prevent the guard member 7 from inhibiting the connection between the main body 60 and the commercial power source.

  Moreover, according to the present embodiment, the terminal unit 6 is configured such that the main body portion 60 is connected to the housing 10 via the connecting pipe 61 that penetrates the guard member 7. For this reason, for example, even when the fixing in the mounting piece 75 is in trouble and the guard member 7 is detached from the housing 10, the connection pipe 61 can prevent the guard member 7 from falling off the housing 10. .

  Furthermore, according to the floodlight illumination device 100 of the present embodiment, since the casing 10 and the guard member 7 are formed in a polygonal shape, a plurality of the floodlight illumination devices 100 can be efficiently arranged in the vertical and horizontal directions. It becomes possible.

  The embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

  For example, in the above embodiment, the guard member 7 is made of punch metal, but is not limited thereto, and may be made of a net-like or lattice-like member, for example. Moreover, the guard member 7 is not limited to the example comprised by a polygonal box, A cylindrical shape may be sufficient and a dome shape may be sufficient.

  In the above embodiment, the hexagonal optical unit 20 is configured by arranging the six light emitting devices 21 in a ring shape, but instead of this, eight light emitting devices are arranged in a ring shape to form an octagon-shaped optical unit. A unit may be configured. In addition, the shape of the light emitting device 21 is not limited to a triangular shape, and may be other polygonal shapes such as a rectangular shape, and the arrangement form is not limited to an annular shape.

  Further, in the above embodiment, the floodlighting illumination device suitable for narrow-angle light distribution illumination has been described as an example. For example, a medium-angle light distribution illumination having a beam opening of 30 ° or more and less than 60 ° or more The present invention is also applicable to a floodlight illumination device for wide-angle light distribution illumination. The light distribution of the emitted light can be arbitrarily adjusted according to the shape of each lens portion 231 of the lens substrate 23, for example.

  In the above embodiment, the LED is described as an example of the light emitting element. However, the present invention is not limited to this, and other light emitting elements such as an organic EL element and an inorganic EL element may be used.

DESCRIPTION OF SYMBOLS 5 ... Radiator 6 ... Terminal unit 7 ... Guard member 10 ... Housing 20 ... Optical unit 21 ... Light-emitting device 22 ... LED board 23 ... Lens board 60 ... Main-body part 61 ... Connection pipe 71 ... Internal space 72 ... Side surface 73 ... Back side 100 ... Floodlighting device 221 ... LED

Claims (9)

A housing having a first surface and a second surface;
An optical unit disposed on the first surface and having a plurality of light emitting elements;
A radiator disposed on the second surface;
A floodlighting illumination device comprising: an internal space that houses the heat radiator; and a guard member that is disposed on the second surface and includes a through hole that allows the internal space to communicate with outside air. The floodlight illumination device according to claim 1,
Further comprising a terminal unit configured to supply power to the optical unit;
The guard member is disposed between the second surface and the terminal unit. The floodlight illumination device according to claim 2,
The guard member further includes a side peripheral surface fixed to the housing, and a back surface that is connected to the side peripheral surface and faces the terminal unit.
The terminal unit further includes a connection pipe that penetrates the internal space and the back surface and is connected to the second surface. The floodlight illumination device according to claim 3,
The housing further has a through hole communicating with the inside of the connection pipe,
The optical unit further includes a wiring cable connected to the terminal unit via the through hole and the connection pipe. The floodlight illumination device according to any one of claims 1 to 4,
The said guard member is a floodlighting illumination apparatus comprised with a punch metal. The floodlight illumination device according to any one of claims 1 to 5,
The optical unit is composed of an assembly of a plurality of light emitting devices,
The plurality of light emitting devices are:
A plurality of light emitting elements disposed in the first plane;
Plural parts each including a top part facing each of the plurality of light emitting elements, a light emitting surface, and a side peripheral surface provided between the top part and the light emitting surface and having a rotating body shape around the axis of the top part. And a lens substrate made of a molded body of a translucent material. The floodlight illumination device according to claim 6,
The optical unit is equally divided in the circumferential direction in the first plane by the plurality of light emitting devices,
The plurality of light emitting devices each have a polygonal shape. The floodlight illumination device according to any one of claims 1 to 7,
The housing and the guard member each have a polygonal shape. The floodlight illumination device according to any one of claims 1 to 8,
The plurality of light emitting elements include a plurality of LEDs.

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