JP5868897B2 - lighting equipment - Google Patents

Description

  The present invention relates to a luminaire including a light source such as an LED as a light source.

  In recent years, lighting fixtures having a high-power (high watt) type LED as a light source are also widely known. In a luminaire equipped with an LED as a light source, in order to efficiently dissipate the heat generated by the LED, a housing is formed from a highly thermally conductive material such as a metal or an alloy, and an LED substrate is attached to the housing. There are also instruments that transfer heat to the housing to dissipate heat. In this lighting fixture, when a high voltage is applied during a withstand voltage test or the like, an electrical insulating material such as a ceramic plate is provided between the housing and the LED substrate in order to prevent an excessive voltage application to the LED substrate. It is interposed (see, for example, Patent Document 1).

JP 2010-198952 A

However, since the ceramic plate is interposed between the LED substrate and the housing, there is a problem that heat transfer from the LED substrate to the housing is hindered and heat dissipation performance is deteriorated.
This invention is made | formed in view of the situation mentioned above, and it aims at providing the lighting fixture which can obtain high withstand voltage performance, obtaining the high heat dissipation performance of the light emitting element of a light source.

In order to achieve the above object, the present invention provides a light source including a light source having a light emitting element substrate on which a light emitting element is mounted, and a housing, and the light emitting element substrate includes: And a substrate mounting member made of a high thermal conductivity material to which heat of the light emitting element mounted on the light emitting element substrate is transferred. The housing includes a part of the substrate mounting member. An engagement hole that engages with an edge portion of the substrate mounting member in an exposed state is provided, and the entire periphery of the edge portion of the substrate mounting member is waterproof between the engagement hole of the housing. And an insulating packing for electrical insulation is mounted .

Moreover, the present invention is characterized in that, in the above-described lighting fixture, the substrate attachment member includes a heat radiating portion that protrudes from the engagement hole and radiates heat of the light emitting element substrate outside the housing.
The present invention, in the lighting apparatus, the heat radiating portion of the plurality of the board mounting member is characterized by being arranged along the circumference of the circle except for the inner given circle.

  Moreover, the present invention is characterized in that, in the above-mentioned lighting fixture, the heat radiating portion includes a heat radiating fin disposed outside the housing, and a heat pipe that transfers heat of the light emitting element substrate to the heat radiating fin. To do.

Further, the present invention is the lighting apparatus, wherein the substrate mounting member includes a pipe groove through which the heat pipe passes, and a cross-section of the pipe groove is an outer periphery after heat deformation caused by heating the heat pipe accompanying a surface treatment. It is characterized by being matched to the shape of the surface.

  According to the present invention, the substrate attachment member to which the light emitting element substrate is attached is configured to engage with the engagement hole of the housing in a state where a part is exposed to the outside of the housing. The heat of the light emitting element can be dissipated from the exposed part. Furthermore, since an electrical insulating material is provided at the contact portion between the board mounting member and the engagement hole of the housing to ensure electrical insulation between them, the light emitting element substrate is interposed in the board mounting member. It is possible to directly attach without causing. Thereby, according to the present invention, heat transfer from the light emitting element to the board mounting member is improved, high heat dissipation performance is obtained, and electrical insulation between the board mounting member and the housing is ensured. There is an effect.

It is the perspective view of the sports lighting fixture which concerns on embodiment of this invention, (A) is the perspective view which looked at the sports lighting fixture from front upper direction, (B) is the perspective view which looked at the sports lighting fixture from front lower direction. It is a figure which shows the structure of a sports lighting fixture, (A) is a front view, (B) is a right view, (C) is a left view, and (D) is a bottom view. It is a side view which shows the state which removed the back surface guard member from the sports lighting fixture. It is a perspective view which shows the state which opened the back surface guard member of the sports lighting fixture. It is a perspective view which shows the state which removed the front cover from the instrument main body. It is a perspective view which shows the whole light source module structure. It is a disassembled perspective view of a light source module. It is sectional drawing of a light source module. It is a disassembled perspective view of a reflective mirror. It is a perspective view which shows the structure of the back side of a housing | casing with a back surface guard member. It is explanatory drawing of the engagement structure of a pipe groove and a heat pipe. It is explanatory drawing of the connection structure of a reflective mirror and a coupling body. It is a rear view of the instrument main body which shows the state which removed the opening / closing part of the back surface guard member by the slide movement.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of a sports lighting device 1 according to the present embodiment, FIG. 1A is a perspective view of the sports lighting device 1 as viewed from the front upper side, and FIG. It is the seen perspective view. 2A and 2B are diagrams showing the configuration of the sports lighting apparatus 1. FIG. 2A is a front view, FIG. 2B is a right side view, FIG. 2C is a left side view, and FIG. Is a bottom view.
This sports lighting device 1 is a lighting device that illuminates an outdoor ball game field or an outdoor stadium from the audience seat side. As shown in FIG. 1 and FIG. The power supply box 6 and the back guard member 7 are provided.

The instrument body 2 includes a bottomed cylindrical casing 10 having a shallow depth with respect to a diameter, a plurality of (five in the illustrated example) light source modules 12 provided in the casing 10, and a front cover 14. I have. Each of the light source modules 12 includes an LED as an example of a light emitting element in a light source, and a COB type LED 30 (FIG. 7) as an example of a high output type LED is used as the LED of the light source.
The light outputs of the plurality of light source modules 12 are designed such that the total brightness thereof is equal to or higher than that required by sports performed in a ball game field or a stadium to be illuminated. Of course, the sports lighting apparatus 1 can be used not only for a ball game field and a stadium but also for lighting of other outdoor sports facilities.

  The attachment arm part 4 is an attachment member for fixing the sports lighting apparatus 1 to the installation surface, and has a function of rotatably supporting the apparatus body 2. Specifically, the attachment arm portion 4 includes a U-shaped support frame 18 attached so as to sandwich the housing 10, and a fixing plate 19 is provided on the support frame 18. The fixing plate 19 is provided with a bolt hole 19A and a swinging slit 19B, and the sports lighting apparatus 1 is firmly fixed by fixing the fixing plate 19 to the installation surface through fixing bolts. The swing slit 19B is an arcuate slit centered on the bolt hole 19A, and the irradiation direction can be adjusted by rotating the sports lighting apparatus 1 along the swing slit 19B.

Further, on both the left and right sides of the housing 10, there are provided connecting pieces 20 extending in the back, and end portions 18A of the support frame 18 are pivotally supported by these connecting pieces 20 so that the housing 10 and the support frame 18 rotate. Freely combined.
Further, the mounting arm portion 4 is provided with a stopper mechanism 22 for making the coupling piece 20 unrotatable on the support frame 18, and the casing 10 can be held at a predetermined angle with respect to the support frame 18 by the stopper mechanism 22. . Further, the connecting piece 20 is provided with a scale 24 indicating a rotation angle around the rotation axis of the support frame 18, and the operator can set the angle 24 between the support frame 18 and the housing 10 at the time of installation. It is designed to be able to be adjusted accurately.

The power supply box 6 is a box containing a power supply circuit that receives the input of commercial power supplied from the outside and generates lighting power for each of the light source modules 12, and is disposed outside the housing 10. From the power supply box 6, a power supply line (not shown) for supplying lighting power to the light source module 12 is drawn out, and drawn in from a drawing portion 17 (FIG. 4) provided in the center of the back surface of the housing 10, The light source modules 12 are connected to the COB type LEDs 30.
In this sports lighting apparatus 1, since the power supply box 6 is provided outside the casing 10, the casing 10 can be reduced in size, and the total weight of the apparatus main body 2 is reduced. In particular, in this sports lighting apparatus 1, the power supply box 6 is attached to the mounting arm portion 4, the total weight of the apparatus main body 2 supported by the support frame 18 is reduced, and the connecting portion between the support frame 18 and the apparatus main body 2 is reduced. The load applied to is reduced.

  The power supply box 6 is formed of a light material having excellent heat conductivity (that is, heat dissipation) such as aluminum, and a cooling mechanism such as a fan for air-cooling the power supply circuit is provided therein as needed. ing. Further, the manner of attaching the power supply box 6 to the attachment arm portion 4 is not limited to the illustrated example. The power supply box 6 can also be provided separately from the sports lighting apparatus 1.

FIG. 3 is a side view showing a state in which the back guard member 7 is removed from the sports lighting apparatus 1, and FIG. 4 is a perspective view showing a state in which the back guard member 7 of the sports lighting apparatus 1 is opened. 3, illustration of the power supply box 6 is omitted, and illustration of members is omitted as appropriate in FIG.
The back guard member 7 is a member that is attached to the housing 10 and protects various structures 24 provided on the back surface 15 of the housing 10. As shown in FIGS. 3 and 4, the back guard member 7 includes a cylindrical portion 7A having a diameter substantially the same as that of the housing 10 and an opening / closing portion 7B that covers the opening of the cylindrical portion 7A. . The cylindrical portion 7A and the opening / closing portion 7B are configured by assembling a large number of elongated guide rods 11 in a lattice shape, a radial shape, etc., and ensure sufficient air permeability in combination with rigidity capable of withstanding a collision of a ball or the like. Has been. Further, the gap between the guide rods 11 is narrowed to such an extent that birds cannot enter, thereby preventing a bird's nest or the like from being formed in the structure 24.
The back guard member 7 is provided with a gripping portion 7H that is gripped when the irradiation direction of the instrument body 2 is adjusted.

  The opening / closing part 7B is coupled to the tubular part 7A by a hinge coupling part 9 so as to be opened and closed in the rear direction, and is coupled to the tubular part 7A by a latch mechanism 13 so as not to be opened and closed. By releasing the latch mechanism 13 and opening the opening / closing part 7B, the maintenance work and the like can be performed by accessing the structure 24 on the back surface 15 without removing the entire back guard member 7. The opening / closing part 7B is configured to be removable from the cylindrical part 7A in a direction perpendicular to the opening / closing direction, which will be described later.

Next, the configuration of the instrument body 2 will be described in detail.
As described above, the housing 10 has a bottomed cylindrical shape whose depth is shallow with respect to the diameter, and the front opening is configured as the emission port 23. The casing 10 is made of aluminum, which is a kind of so-called lightweight metal, having a relatively low specific gravity. In addition to the external structure of the power supply box 6, the instrument body 2 is further reduced in weight. Yes.

FIG. 5 is a perspective view showing a state in which the front cover 14 is removed from the instrument body 2.
The front cover 14 is a translucent member that covers the exit port 23 of the housing 10 and is made of polycarbonate resin for weight reduction and prevention of scattering due to a collision with a ball or the like. The front cover 14 is firmly coupled to the flange 23A of the emission port 23 by being screwed with screws 29 (FIG. 4).
Here, since the housing 10 is made of aluminum for weight reduction as described above, the strength of the screw holes is increased when the screw holes for screwing the front cover 14 are provided in the flange 23A. There is a problem that it is too weak.
In order to solve this problem, it is conceivable to reinforce the strength of the screw hole by increasing the thickness of the flange 23A or by overlapping another member, but there is a problem that the manufacturing cost increases.

Therefore, the sports lighting apparatus 1 solves the problem as follows.
That is, as shown in FIGS. 4 and 5, instead of providing a screw hole for screwing the screw 29 in the flange 23A of the housing 10, a hat-shaped bracket 25 to which the front cover 14 is screwed is provided in the flange 23A. It is supposed to be provided. Specifically, metal fitting insertion holes 26 are formed in the flange 23 </ b> A around the emission port 23 at a predetermined interval. The hat-shaped metal fitting 25 has a pedestal portion 25A (FIG. 5) formed by protruding a substantially central portion of the plate-like member, and a screw hole 25B into which a screw 29 is screwed is formed in the pedestal portion 25A. The hat-shaped metal fitting 25 is fixed by, for example, welding or screwing in a state where the pedestal portion 25A is inserted into the metal fitting insertion hole 26 from the back surface of the flange 23A and protrudes to the front side. Then, the front cover 14 is screwed with screws 29 to each of the pedestal portions 25A protruding to the front side (front side) of the flange 23A. Thereby, even if the strength of the housing 10 is weak, the front cover 14 can be firmly screwed to the housing 10 by the hat-shaped fitting 25.

FIG. 6 is a perspective view showing the overall configuration of the light source module 12, FIG. 7 is an exploded perspective view of the light source module 12, and FIG. 8 is a cross-sectional view of the light source module 12.
The light source module 12 is a module that includes a COB LED 30 as an example of a high-power LED in its light source. As shown in these drawings, the light source module 12 is roughly divided into a COB LED 30 (FIG. 7) and the COB LED 30. A base plate 32 serving as a substrate mounting member, a reflecting mirror 34 serving as a light control member, a heat radiating portion 36, and an insulating packing 38 are provided.
As shown in FIG. 7, the COB type LED 30 is a chip-on-board (Chip) in which a large number of LEDs are densely arranged on an LED substrate 31 to form a planar light emitting portion 31 </ b> A having a substantially circular shape (which may be a quadrangle). It is a light-emitting device having an On Board (COB) structure. The COB-type LED 30 is an LED light source with a large light quantity and high brightness because a large number of LEDs are densely arranged.

The base plate 32 is a board attachment member to which the COB type LED 30 is directly attached, and is formed of aluminum which is a high heat conductive material, for example, metal. As shown in FIG. 7, the base plate 32 is formed in a substantially disk shape, and an LED housing recess 40 is provided in the center of the surface 32 </ b> A, and the LED substrate 31 of the COB type LED 30 is formed in the LED housing recess 40. The upper surface is covered with a translucent sheet 45.
The translucent sheet 45 is a resinous sheet having electrical insulation. As will be described in detail later, the COB type LED 30 is directly placed on the base plate 32 in the LED housing recess 40 without using an electrical insulating material or the like.
The insulating packing 38 is a member that is formed of, for example, an electric insulating material such as a resin material and covers at least the entire circumference of the edge portion 56 of the base plate 32, and details thereof will be described later.
In addition, in order to promote heat transfer from the COB type LED 30 to the LED housing recess 40, even if a thermal conductive grease or the like is applied to the contact surfaces of both, or a thermal conductive sheet is interposed, the thermal resistance between the two is reduced. good.

  On the surface 32A of the base plate 32, an annular reflecting mirror fixture 42 surrounding the LED housing recess 40 is fixed with screws, and the reflecting mirror 34 is fixed to the reflecting mirror fixture 42. The reflecting mirror fixture 42 is configured to press the LED substrate 31 of the COB type LED 30 and the translucent sheet 45 from above with screwing and fixing to the base plate 32. As a result, the fixing of the reflecting mirror fixture 42 also serves to fix the COB type LED 30, and it is unnecessary to fix the COB type LED 30 to the base plate 32 with screws.

The reflecting mirror 34 has a rotating body shape such as a rotating paraboloid or a rotating ellipsoid, and is a concave mirror in which a rotating parabolic reflecting surface or a rotating ellipsoid reflecting surface determined according to predetermined light distribution control is formed on the inner surface thereof. . The reflecting mirror 34 is configured by using a resin material as a base material and coating the surface thereof with a reflecting material, and is reduced in weight compared to the case where it is formed from a metal material.
The reflecting mirror 34 is attached and fixed to the reflecting mirror fixture 42 in a screwed manner. Specifically, a flange 33 that engages with the reflector fixing tool 42 is provided at the edge of the base end portion 35 </ b> A of the reflector 34. The reflecting mirror fixture 42 is provided with a threaded groove 42 </ b> A into which the collar portion 33 enters, and the collar portion 33 is engaged with the reflecting mirror 34 so as not to fall off as the reflecting mirror 34 rotates. When the reflecting mirror 34 is fixed, the reflecting mirror 34 can be fixed without using a separate tool by screwing the flange 33 into the screwing groove 42A. Further, the flange portion 33 of the reflecting mirror 34 is also formed of a resin material, and a spring force (elastic force) acts between the screw groove 42A and the flange portion 33, and the coupling force between them is enhanced.

FIG. 9 is an exploded perspective view of the reflecting mirror 34.
As shown in FIG. 9, the reflecting mirror 34 is configured to be split into a base end part 34Pa and a tip end part 34Pb between the base end 35A and the tip 35B. That is, the light source module 12 can be used by removing the front end side part 34Pb from the base end side part 34Pa of the reflecting mirror 34 or by changing the front end side part 34Pb to a part having a different reflecting surface. The orientation pattern can be easily changed.

Specifically, the reflecting mirror 34 is configured such that a medium angle light distribution with a 1/10 beam angle of 62 ° is obtained when only the base end part 34Pa having a mirror-finished reflecting surface is used. (Configuration 1). In addition to the reflector 34 of this configuration 1, the front cover 14 is used in combination with a stamped cover with a light diffusing effect, so that a 1/10 beam angle of 63 ° can be obtained with a medium and wide angle light distribution. (Configuration 2). In the reflecting mirror 34 of this configuration 2, the processing of the reflecting surface of the base end side part 34Pa is replaced with the mirror processing and white coating (that is, light diffusion processing) is performed, thereby wide-angle light distribution with a 1/10 beam angle of 87 °. Is obtained (Configuration 3).
Further, in addition to the reflecting mirror 34 of the above configuration 1, by attaching the tip side part 34Pb having a mirror-finished reflecting surface to the base side part 34Pa, a narrow angle light distribution with a 1/10 beam angle of 38 ° can be obtained. (Configuration 4). In addition to the reflector 34 of the configuration 4, in the same manner as the configuration 2, by using a stamped cover with a light diffusing effect as the front cover 14, a narrow medium angle light distribution with a 1/10 beam angle of 40 ° can be obtained. It is configured to be obtained (Configuration 5).

  For fixing the distal end side part 34Pb to the proximal end side part 34Pa, a screwed structure is used in order to facilitate the attachment / detachment thereof. That is, a flange 37 is provided at the distal end portion of the base end part 34Pa, and a slide groove 39 is provided in the surface of the flange 37. On the other hand, a flange 41 is provided at the proximal end portion of the distal end side part 34Pb so as to meet the flange 37 of the proximal end side part 34Pa on the surface. The flange 41 is provided with a slide locking piece 43. By inserting the slide locking piece 43 into the slide groove 39 of the base end side part 34Pa and rotating the distal end side part 34Pb, the slide locking piece 43 is provided. Is locked to the slide groove 39 so as not to fall off, and both are coupled.

Returning to FIG. 7, the heat radiating portion 36 is a heat radiating mechanism that radiates heat transferred from the COB type LED 30 to the base plate 32. Specifically, the heat radiating unit 36 includes a plurality of heat radiating fins 48 and a plurality of heat pipes 50 that convey the heat of the COB type LEDs 30 transmitted to the base plate 32 to the heat radiating fins 48.
The radiating fins 48 are substantially rectangular plate materials, and are formed of an aluminum plate that is a lightweight metal material having excellent thermal conductivity. Each of the heat pipes 50 penetrates a large number of heat radiation fins 48, and these heat radiation fins 48 are laminated and bundled together so as to be spaced apart from each other. As shown in FIG. 8, these radiating fins 48 are arranged by a support fitting 49 so as to extend vertically from the back surface 32 </ b> B of the base plate 32. The support bracket 49 is supported by providing a predetermined gap δ between the radiating fin 48 and the back surface 32B of the base plate 32. Air can flow through the back surface 32B and the radiating fin 48 through the gap δ, and the heat accumulation of the back surface 32B is achieved. Is suppressed. Note that the length and the number of the radiating fins 48 extending from the housing 10 are determined according to the required radiating performance.

The heat pipe 50 is a tubular body in which a working fluid is sealed, and is bent into a substantially U shape. That is, as shown in FIG. 7, the heat pipe 50 includes one end portion 50 </ b> A extending along the back surface of the base plate 32, a through portion (not shown) penetrating each radiation fin 48, the one end portion 50 </ b> A and the through portion. The linear part 50B (FIG. 8) to connect is integrally provided. Here, since the heat radiating fins 48 extend from the back surface 15 of the housing 10, some heat pipes 50 are linear portions 50 </ b> B so as to transmit the heat of the base plate 32 both near and far from the housing 10. Are different in length.
A plurality of pipe grooves 51 are provided on the back surface 32B of the base plate 32. By passing one end portion 50A of the heat pipe 50 through each pipe groove 51, the heat pipe 50 enters the base plate 32 and efficiently heats. Is recovered.
On the back surface 32B of the base plate 32, a plate portion 49A included in the support metal fitting 49 is attached so as to cover the open portion of the pipe groove 51, so that one end portion 50A of each heat pipe 50 cannot be removed from the pipe groove 51. .

FIG. 10 is a perspective view showing the configuration of the back side of the housing 10 together with the back guard member 7.
The light source module 12 is not entirely housed in the housing 10, but as shown in FIG. 10, an engagement hole 54 is provided in the back surface 15 of the housing 10, and a base plate is formed as shown in FIG. 32 is engaged with the engagement hole 54, and the heat radiating portion 36 is exposed outside the housing 10.
At this time, as shown in FIG. 8, the above-described insulating packing 38 that covers the entire circumference is attached to the edge 56 of the base plate 32. The insulating packing 38 is interposed on the entire contact surface of the back surface 15 of the housing 10 and the surface 32A of the base plate 32, so that water from the engagement hole 54 is prevented and electrical insulation between the two is prevented. Secured.

That is, since the base plate 32 on which the COB type LED 30 is placed and the housing 10 are electrically insulated by the insulating packing 38, even if a high voltage is applied to the housing 10 during a withstand voltage test, for example. No overvoltage is applied to the COB-type LED 30 through 32. As a result, as described above, the COB type LED 30 can be directly attached to the base plate 32 made of a metal material having high heat dissipation. The heat generated by the COB type LED 30 can be efficiently transmitted to the base plate 32 and radiated from the heat radiating portion 36. Can do it.
Further, since the base plate 32 is configured to be engaged with the engagement hole 54, the back surface 32 </ b> B is exposed to the outside of the housing 10, and the heat radiating portion 36 is disposed outside the housing 10. Thereby, the heat of the heat radiating portion 36 can be efficiently radiated to the outside air, and high cooling performance can be obtained.

  However, in the sports lighting apparatus 1 installed outdoors, the heat radiating part 36 is exposed to wind and rain, and corrosion or the like occurs unless any countermeasure is taken. Therefore, in this sports lighting device 1, a corrosion-resistant film is formed on the entire surface of the heat radiating portion 36, and the corrosion resistance is enhanced. Various types of surface treatments such as electrodeposition coating and alumite treatment can be used for the formation of the corrosion resistant film. In this embodiment, black powder electrodeposition coating is used. The surface treatment of the heat radiating portion 36 is performed in a state where the heat radiating portion 36 is assembled to the base plate 32. That is, the surface treatment is performed in a state where one end portion 50A of the heat pipe 50 to which the radiating fin 48 is assembled is passed through the pipe groove 51 of the base plate 32, and the open portion of the pipe groove 51 is closed by the plate portion 49A of the support metal fitting 49. Do.

FIG. 11 is an explanatory diagram of an engagement structure between the pipe groove 51 and the heat pipe 50.
One end portion 50A of the heat pipe 50 has a substantially circular cross section as shown in FIG. 11 (A), and before insertion into the pipe groove 51, as shown in FIG. It is crushed and formed into a substantially elliptical cross section. Thus, even if the cross section 51A of the pipe groove 51 is rectangular, for example, the contact area between the outer peripheral surface 50A1 of the one end portion 50A of the heat pipe 50 and the pipe groove 51 is circular. It can be increased compared to the situation.

However, in the surface treatment, heat is also applied to the one end portion 50A of the heat pipe 50, so that the one end portion 50A is thermally deformed so as to slightly expand in the radial direction as shown in FIG. If no countermeasure is taken, this thermal deformation causes a gap between the outer peripheral surface 50A1 of the one end portion 50A of the heat pipe 50 and the pipe groove 51, resulting in a large thermal resistance.
Also, if the cross section of the one end portion 50A returns to a circular cross section by thermal deformation, although the cross section 51A of the pipe groove 51 can be formed in advance according to this circular shape, both can be brought into close contact after thermal deformation, It does not return to a circular cross section after thermal deformation.
Therefore, in this sports lighting fixture 1, as shown in FIG. 11 (C), the shape of the cross-section 51A of the pipe groove 51 is the same after the heat deformation caused by heating to the one end 50A of the heat pipe 50 accompanying the surface treatment. It is supposed to be formed in advance according to the shape of the outer peripheral surface 50A1. Thereby, the outer peripheral surface 50A1 of the one end portion 50A of the heat pipe 50 can be brought into close contact with the pipe groove 51 after heat deformation accompanying the surface treatment, and heat is efficiently transmitted from the base plate 32 to the heat pipe 50.

By the way, when the sports lighting apparatus 1 is installed in a ball game field, a ball used in the ball game may collide. In particular, in this sports lighting fixture 1, each of the plurality of reflecting mirrors 34 is supported by connecting its base end 35A to the housing 10 and is made of a resin material. The configuration is designed to be simplified. For this reason, compared with the case where each reflecting mirror 34 is formed from a metal material, each of the reflecting mirrors 34 is easily shaken when an impact is applied to the instrument body 2. In particular, when each of the reflecting mirrors 34 swings at random, a positional deviation occurs between the reflecting mirrors 34, thereby causing a deviation in the orientation characteristics of the instrument body 2.
Therefore, in the sports lighting apparatus 1, positional deviation of the reflecting mirror 34 due to impact is prevented as follows.

That is, in this sports lighting apparatus 1, by forming each of the reflecting mirrors 34 that are separate from each other (that is, independent of each other) into the same size and shape, at least the height L (from the base end portion 35A to the tip end portion 35B) 8) and the diameter R (FIG. 8) of the tip opening 60 of the tip 35B are made equal to each other. Then, as shown in FIG. 2A, these reflecting mirrors 34 are arranged at equal intervals along the circumference of the circle D so that the distal end openings 60 are in contact with each other, and the base end portion 35A ( More precisely, the base plate 32) is coupled to the housing 10 and supported.
According to this configuration, even if an impact is applied to the instrument body 2 and each of the reflecting mirrors 34 swings about the base end portion 35A as a fulcrum, it is difficult for each of the mirrors to swing randomly. It can be suppressed.

  Further, since the reflecting mirrors 34 are arranged at equal intervals on the circumference of the circle D, on the back surface 15 of the housing 10, as shown in FIG. Without being aligned on the same straight line extending in the direction, they are arranged so as to be shifted from each other in the lateral direction. That is, when the sports lighting apparatus 1 is installed with the back surface 15 upright with respect to a horizontal plane, the respective heat radiating portions 36 do not align on the same straight line extending in the vertical direction. Thereby, the influence which the hot air heated and raised by the thermal radiation part 36 has on the other thermal radiation part 36 located above the thermal radiation part 36 is suppressed, and the fall of thermal radiation performance can be prevented.

  In this sports lighting apparatus 1, each reflecting mirror 34 includes flanges 37, 41 projecting in the radial direction on the outer peripheral surface. Therefore, as shown in FIG. 41 are connected by a plate-like connecting body 65. Thereby, when each reflecting mirror 34 swings due to an impact or the like, the point connected by the coupling body 65 becomes a supporting point of the swing, so that the supporting point becomes closer to the tip portion 35B, and the tip portion of each reflecting mirror 34 The swing width of 35B is suppressed.

  Here, when each reflecting mirror 34 is connected by the connecting body 65, the base end that is not the flange 41 of the distal end side part 34Pb that is the distal end portion 35B side of each reflecting mirror 34 but the base end portion 35A side. The flanges 37 of the side parts 34Pa are connected by a connecting body 65. Specifically, as shown in FIG. 9, a plurality of bosses 63 are erected on the flange 37, and any one of the bosses 63 is positioned through the positioning through hole 65 </ b> A (FIG. 12B). Each flange 37 is coupled to the coupling body 65 by passing through the coupling body 65. As a result, it is possible to easily attach and detach by rotating only the distal end side part 34Pb while fixing the proximal end side part 34Pa to the housing 10.

However, although the positional deviation between each other due to the shake of each reflecting mirror 34 is suppressed, there is a problem that the tip side part 34Pb rotates due to the occurrence of the shake itself, and the joint portion is loosened. Further, when the reflecting mirrors 34 are not connected by the connecting body 65, the reflecting mirror 34 naturally rotates with respect to the casing 10, so that the casing 10 and the base end portion 35 </ b> A of the reflecting mirror 34 are coupled. Also loosening occurs.
Therefore, in this sports lighting apparatus 1, as shown in FIG. 6, the engaging groove 66 that engages with each other is provided on the edge 60A of the tip opening 60 of each reflecting mirror 34 over the entire circumference. Yes. Thereby, when each reflecting mirror 34 swings, each rotation is suppressed by the engagement of each engaging groove 66, and each reflecting mirror 34 (the tip side part 34Pb in this embodiment) is coupled. Looseness is suppressed.

FIG. 12 is an explanatory diagram of a connecting structure of the reflecting mirror 34 and the connecting body 65.
When the reflecting mirror 34 is assembled to the housing 10, as described above, the base end portion 35 </ b> A of the reflecting mirror 34 is attached to the reflecting mirror fixture 42 of the base plate 32 attached to the engagement hole 54 of the housing 10. It is done. At the time of this attachment, as shown in FIG. 12A, a gap α is provided between the edge portions 60A of the tip openings 60 of the respective reflecting mirrors 34.

A power supply line lead-in hole 17A is provided in the center of the bottom surface of the housing 10 in correspondence with the lead-in part 17, and a connecting member support fitting 67 is provided on the drawing hole 17A. The connecting body 65 is fixed to 67.
When the coupling body 65 is fixed, prior to screwing the coupling body support fitting 67, as shown in FIG. 12B, the boss 63 of the flange 37 of each reflecting mirror 34 is positioned at the position of the coupling body 65. It connects through the final through-hole 65A. By this connection, the tip opening 60 of each reflecting mirror 34 is drawn toward the center of the housing 10. Then, by fixing the coupling body 65 to the coupling body support metal fitting 67 with the two screws 61, the edges 60A of the tip openings 60 of the respective reflecting mirrors 34 are in contact with each other so that the engagement grooves 66 are engaged with each other. Is positioned.
Thereby, the tip opening 60 of each reflecting mirror 34 is positioned at an accurate position, and each rotation when an impact is applied is prevented by the engagement of the engaging grooves 66.

By the way, since this sports lighting apparatus 1 is installed in an outdoor ball game field or the like, a ball or the like may collide as described above. In general, in a sports lighting device, the front surface (front surface) of the device main body is covered with a guard member in order to protect the device main body from the collision of a ball or the like and prevent the front cover from being damaged.
On the other hand, in this sports lighting apparatus 1, since the front cover 14 is made of polycarbonate having excellent impact resistance, it is difficult to be damaged even when a ball or the like collides, and a guard member is unnecessary as in the prior art. .

However, in the sports lighting apparatus 1, the housing 10 is provided with a plurality of heat radiation portions 36 as the structure 24 protruding from the back surface 15. Since each heat radiating portion 36 includes the heat radiating fins 48 made of a metal plate such as aluminum as described above, the heat radiating portions 36 are easily damaged by a collision with a ball or the like. Therefore, in the sports lighting apparatus 1, the housing 10 is provided with the above-described back guard member 7 that protects the structure 24 protruding from the back surface 15.
As described above, the back guard member 7 is attached to the back surface 15 of the housing 10 and surrounds the structure 24, and is joined to the opening end of the tubular portion 7A by the hinge coupling portion 9. And an opening / closing portion 7B that can be opened and closed in the rear direction of the housing 10. At the time of maintenance such as cleaning of the structure 24, maintenance work and the like can be performed by opening the opening / closing part 7 </ b> B toward the back of the housing 10.

However, in an outdoor ball game field, the sports lighting equipment 1 is often installed in a position close to the spectator seats and passages, and a large work space cannot be left behind the equipment body 2. There is. In particular, the space required to open and close the opening / closing part 7B may not be available. In this case, the maintenance of the structure 24 is not easy.
Therefore, in the sports lighting device 1, as described above, the opening / closing part 7B is moved in parallel with the opening surface of the cylindrical part 7A (that is, substantially perpendicular to the opening / closing direction in the rear direction), thereby being removed from the cylindrical part 7A. It is configured to be removable.

FIG. 13 is a rear view of the instrument main body 2 showing a state in which the opening / closing part 7B of the rear guard member 7 is removed from a direction substantially perpendicular to the opening / closing direction.
As described above, the opening / closing portion 7B is connected to the cylindrical portion 7A by the hinge connecting portion 9 so as to be freely opened and closed. As shown in FIG. 3, the hinge connecting portion 9 includes a plurality of hinges 9A. . As the hinge 9A, a so-called insertion / extraction hinge (also referred to as an extraction hinge) in which the shaft portion 72 is divided and the pair of hinge pieces 70, 71 are configured to be freely inserted / removed as shown in FIG. 13 is used. At this time, if the coupling between the cylindrical portion 7A and the opening / closing portion 7B is only the hinge 9A, the opening / closing portion 7B falls off depending on the installation posture of the instrument body 2. On the other hand, in the rear guard member 7, the opening / closing part 7B is locked to the cylindrical part 7A so as not to be opened / closed by the latch mechanism 13 at a position facing the hinge 9A, so that the opening / closing part 7B is prevented from falling off. The

  With such a configuration, even if there is not enough space behind the instrument body 2 to open the opening / closing part 7B, the opening / closing part 7B is opened slightly and the axial direction of the shaft part 72 (removal direction) is such that the hinge 9A is pulled out. By moving, the hinge 9A of the hinge coupling part 9 comes off. Thereby, the opening-and-closing part 7B can be removed from the axial direction of the axial part 72, and the maintenance of the structure 24 can be performed easily.

  In particular, when the equipment body 2 of the sports lighting equipment 1 is installed suspended from an indoor ceiling surface (for example, a high ceiling surface of a gymnasium), the opening / closing part 7B is opened between the equipment body 2 and the ceiling surface. It is difficult to secure a sufficient space. Even in such a case, according to the sports lighting apparatus 1, the opening / closing part 7 </ b> B is slid and removed in a direction perpendicular to the opening / closing direction, and the structure 24 can be maintained.

As described above, according to the present embodiment, the following effects can be obtained.
That is, according to the sports lighting apparatus 1 of the present embodiment, the base plate 32 to which the LED substrate 31 of the COB type LED 30 is attached has a part (the back surface 32 </ b> B) outside the housing 10 in the engagement hole 54 of the housing 10. It was set as the structure engaged in an exposed state. With this configuration, the heat of the COB type LED 30 transmitted to the base plate 32 can be dissipated from a portion exposed to the outside.
In addition, an insulating packing 38, which is an electrical insulating material, is provided at a contact location between the base plate 32 and the engagement hole 54 of the housing 10 to ensure electrical insulation between them. As a result, the COB type LED 30 can be directly attached to the base plate 32 without interposing an electrical insulating material.

Further, according to the present embodiment, the base plate 32 is provided with the heat radiating portion 36 protruding from the engagement hole 54 on the outside of the housing 10.
With this configuration, the heat transmitted from the COB type LED 30 to the base plate 32 can be directly radiated to the outside from the base plate 32 through the heat radiating portion 36, and high cooling performance can be obtained.

  Further, according to the present embodiment, the heat radiating unit 36 includes the heat radiating fins 48 disposed outside the housing 10 and the heat pipes 50 that transmit the heat of the COB type LEDs 30 to the heat radiating fins 48. With this configuration, heat of the base plate 32 can be efficiently transmitted to the heat radiating fins 48 through the heat pipes 50 while extending the heat radiating fins 48 from the casing 10 to the outside by a length corresponding to the required heat radiating performance. .

Further, the base plate 32 includes a pipe groove 51 through which the heat pipe 50 passes, and an outer peripheral surface of the heat pipe is caused by thermal deformation caused by heating of the heat pipe accompanying a surface treatment for improving the corrosion resistance of the surface of the pipe groove 51. It was set as the dimension shape which closely_contact | adheres.
Thereby, even if it heat-treats the heat pipe 50, the adhesiveness of the base plate 32 and the heat pipe 50 can be maintained, and favorable heat dissipation performance is ensured.

Further, according to the present embodiment, the reflecting mirrors 34 are arranged on the circumference, and the edge 60A of each tip opening 60 of the reflecting mirror 34 is in contact with the edge 60A of the tip opening 60 of the adjacent reflecting mirror 34. It joined to the housing | casing 10 so that a contact state might be maintained. As a result, even when an impact is applied to the instrument main body 2, it is possible to suppress the individual reflecting mirrors 34 from being randomly shaken, and thus the positional deviation between them is suppressed.
In particular, even when the reflecting mirror 34 is formed of a resin material, a lightweight instrument can be configured while sufficiently suppressing positional deviation between them.

  Further, according to the present embodiment, the base end portion 35A of the reflecting mirror 34 is screwed to the casing 10 (more precisely, the base plate 32 attached to the casing 10), and each distal end of the reflecting mirror 34 is connected. The edge 60A of the opening 60 is provided with an engagement groove 66 that is an engagement portion that engages with each other to suppress rotation.

  In addition, according to the present embodiment, the heat radiation fins 48 of the heat radiation portion 36 are disposed on the back surface 15 of the housing 10 at positions corresponding to the respective reflectors 34 disposed on the circumference. The radiating fins 48 of the part 36 are not arranged on the same straight line. Thereby, the thermal influence in heat dissipation part 36 is suppressed.

  Moreover, according to this embodiment, the opening / closing part 7B of the back surface guard member 7 provided in the instrument main body 2 is provided detachably in a direction substantially perpendicular to the opening / closing direction (backward direction). Thereby, even when there is not enough space required for opening / closing the opening / closing part 7B of the back guard member 7 behind the instrument body 2, the opening / closing part 7B can be removed from a direction substantially perpendicular to the opening / closing direction, and maintenance work can be performed. Becomes easy.

In particular, even when the heat radiating portion 36 is provided on the back surface 15 of the instrument body 2, it can be protected by the back guard member 7.
Therefore, even when used as a sports lighting device installed indoors on the ceiling surface or outdoors, the heat radiating portion 36 can be protected by the back guard member 7 from the collision of a ball or the like.

  The above-described embodiment is merely an example of the present invention, and can be arbitrarily modified and applied without departing from the spirit of the present invention.

For example, in the above-described embodiment, the case where the sports lighting apparatus 1 is installed and used outdoors is illustrated, but the present invention is not limited thereto. That is, you may use it, fixing the instrument main body 2 of the sports lighting fixture 1 so that it may irradiate directly from a gymnasium or a ceiling surface.
In addition, the present invention is not limited to sports lighting fixtures, but can of course be applied to other outdoor or indoor lighting fixtures. In particular, it can be suitably used for a lighting fixture that is installed on a ceiling surface or a wall surface of a factory and needs to protect the lighting fixture from a collision of a work vehicle.

  Moreover, in embodiment mentioned above, although COB type LED30 was illustrated as an example of LED, it is not restricted to this, Arbitrary LED can be used. Moreover, as a light emitting element, arbitrary light emitting elements, such as organic EL other than LED, can be used.

1 Sports lighting equipment (lighting equipment)
DESCRIPTION OF SYMBOLS 2 Instrument main body 6 Power supply box 10 Case 12 Light source module 15 Back surface 17 Pull-in part 23 Outlet 30 COB type LED (light emitting element)
31 LED substrate (light emitting device substrate)
31A Light emitting unit 32 Base plate (substrate mounting member)
34 Reflector 36 Heat radiation part 38 Insulation packing (electrical insulation)
40 LED housing recess 48 Heat radiation fin 50 Heat pipe 51 Pipe groove 54 Engagement hole

Claims (5)

In a lighting fixture that includes a light source having a light emitting element substrate on which a light emitting element is mounted, and a housing, and illuminates outdoors or indoors,
The light emitting element substrate is mounted, and includes a substrate mounting member made of a high thermal conductivity material to which heat of the light emitting element mounted on the light emitting element substrate is transferred,
The housing is provided with an engagement hole with which an edge of the substrate mounting member engages with a part of the substrate mounting member exposed to the outside of the housing.
An illuminating device characterized in that an insulating packing for waterproofing and electrical insulation is attached to the entire periphery of the edge portion of the board mounting member between the housing and the engagement hole.   The lighting apparatus according to claim 1, wherein the board attaching member includes a heat radiating portion that protrudes from the engagement hole and radiates heat of the light emitting element substrate outside the housing. Radiating portions of the plurality of the substrate mounting member, the lighting instrument according to claim 2, characterized in that it is arranged along the circumference of the circle except for the inner given circle.   4. The illumination according to claim 2, wherein the heat dissipating unit includes a heat dissipating fin disposed outside the housing and a heat pipe that transfers heat of the light emitting element substrate to the heat dissipating fin. 5. Instruments. The substrate mounting member includes a pipe groove through which the heat pipe passes,
The light fixture according to claim 4 in which the cross-section of the pipe groove, characterized in that are matched to the shape of the outer peripheral surface after the thermal deformation caused by heating to the heat pipe due to the surface treatment.

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