JP2018106988A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire for suppressing icicle formation. SOLUTION: In a lighting fixture 1 provided with a light source chamber 58 having a light source portion 50 inside the fixture main body 10, a protruding portion 19 protruding from a top surface 11B is formed along both sides of the light source chamber 58. The base 19B of the protrusion 19 is provided with a drain hole 70 that communicates from the top surface 11B of the instrument body 10 to the bottom surface 11A. [Selection diagram] Fig. 6

Description

  The present invention relates to a lighting fixture.

  2. Description of the Related Art Conventionally, lighting fixtures such as street lights and road lights using LEDs as light sources are known. When these lighting fixtures are used in a snowy region, ice pillars are formed from the fixture main body by snow melting water accumulated on the fixture main body. Therefore, conventionally, there has been known a luminaire having a configuration in which an icy column is hardly generated (see, for example, Patent Document 1). In these lighting fixtures, the heat generated by the LEDs is transferred to the outer surface of the lower end of the fixture body, preventing the snowmelt dripping from the outer surface of the lower end portion from freezing and the root part of the icicle from sticking to the fixture body. doing.

JP 2012-9166 A

  By the way, lighting fixtures, such as a street light and a road lamp, are installed inclining obliquely so that the base end is fixed to a support pole such as a power pole and the tip is higher than the base end. Thereby, the snow melting water flows from the distal end side toward the proximal end side on the top surface of the instrument body, and hangs down from the outer surface of the proximal end portion serving as the lower end portion. In the configuration in which the heat generated by the LED is transmitted to the outer surface of the base end portion of the instrument body, when there is a lot of snow on the upper part of the instrument body, the upper part of the instrument body becomes cold and an ice layer is formed. As described above, when an ice layer is formed on the upper part of the apparatus body, an ice column may be formed from the ice layer.

  Then, this invention is made | formed in view of the situation mentioned above, and it aims at providing the lighting fixture which aimed at suppression of icicle formation.

  The present invention provides a lighting fixture including a light source chamber having a light source portion inside the fixture main body, and protruding portions protruding from the top surface are formed along both sides of the light source chamber. The root is provided with a drainage hole communicating from the top surface to the bottom surface of the instrument body.

  Moreover, the said lighting fixture WHEREIN: The said light source part is thermally connected to the back surface of the top | upper surface of the said light source chamber, It is good also characterized by the above-mentioned.

  Moreover, the said lighting fixture WHEREIN: The upper surface of the said protrusion part is good also as the downward inclination toward the top | upper surface of the said instrument main body, It is good also considering the above-mentioned.

  Moreover, the said lighting fixture WHEREIN: The power supply part which supplies a power supply to the said light source part may be arrange | positioned inside the said protrusion part.

  In the lighting apparatus, a guide portion that is inclined downward toward the drain hole is provided on a top surface of the light source chamber, and the guide portion is inclined toward a center side of the top surface. It may be characterized by being.

  Moreover, the said lighting fixture WHEREIN: The said fixture main body is good also as the connection chamber being provided in the position which opposes the said light source chamber on both sides of the said drain hole.

  Further, in the lighting apparatus, the drainage hole includes a surface on the light source chamber side facing the drainage hole and a surface on the connection chamber side, and the surface on the light source chamber side is on the connection chamber side. It may be characterized in that the slope is formed more gently than the surface.

  Moreover, the said lighting fixture WHEREIN: The said drain hole is good also as characterized by being covered in the bowl shape with the cover body which plugs up the said connection room.

  Further, in the above-mentioned lighting fixture, a diversion part for diverting water to be directed to the drainage holes provided at the bases of the pair of protrusions is provided on the top surface of the light source chamber. Also good.

  Further, in the above-described lighting apparatus, the drainage hole includes a surface on the light source chamber side facing the drainage hole and a surface on the connection chamber side, and a lower end portion of the surface on the light source chamber side is connected to the connection line. It is good also as being located below compared with the lower end part of the room side surface.

  In the present invention, a projecting portion that projects from the top surface is formed along both sides of the light source chamber, and a drainage hole that communicates from the top surface of the instrument body to the bottom surface is provided at the base of the projecting portion. Yes. Thereby, it is possible to prevent the ice column from being generated from the side surface of the device main body and the drain hole, and it is possible to provide a lighting device that suppresses the formation of the ice column.

It is the perspective view which looked at the lighting fixture which concerns on embodiment of this invention from the downward direction. It is the perspective view which looked at the lighting fixture from upper direction. It is the top view which looked at the lighting fixture from the downward direction. It is a perspective view which shows the state which opened the base cover body of the lighting fixture. It is II sectional drawing of FIG. It is a top view which shows the top | upper surface of a housing | casing. It is II-II sectional drawing of FIG. It is III-III sectional drawing of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a perspective view of the luminaire 1 according to the present embodiment as viewed from below, and FIG. 2 is a perspective view of the luminaire 1 as viewed from above. FIG. 3 is a plan view of the luminaire 1 as viewed from below, and shows the luminaire 1 with the front cover 12 and the front frame 13 removed in order to show the inside of the luminaire 1.

  The luminaire 1 is installed outdoors and used, for example, as road lighting. As shown in FIGS. 1 to 3, the lighting apparatus 1 includes an apparatus main body 10, and a base end 10 </ b> A, which is one longitudinal end of the apparatus main body 10, stands outdoors on a roadside, a streetside, a parking lot, a park, or the like. It is installed by being supported on the upper end of a pole-shaped support (not shown). For example, the lighting device 1 is configured such that the direction of the length L from the base end 10A of the device body 10 toward the tip 10B (the other end) is matched with the width direction of the road, and the width W is matched with the lane axis direction of the road. Installed on the side of the road. Moreover, the lighting fixture 1 may be installed by supporting the base end 10 </ b> A of the fixture body 10 on a support member (not shown) extending in an arm shape from the wall surface of the structure. On the side of the base end 10 </ b> A of the fixture body 10, a clamp 5 for supporting the lighting fixture 1 on a support or a support member is attached.

  The instrument body 10 has a substantially rectangular shape in plan view. In addition, the instrument body 10 is a thin instrument in which the length L is longer than the width W and the thickness T in the vertical direction is thinner than the length L and the width W. In addition, the following description will be made assuming that the direction of the width W of the fixture body 10 is the left-right direction of the lighting fixture 1.

  The instrument body 10 includes a housing 11, a front cover 12, and a front frame 13. The housing 11, the front cover 12, and the front frame 13 are formed of members having corrosion resistance and strength that can sufficiently withstand outdoor use. The casing 11 is formed of a material having high thermal conductivity, and is preferably a cast (so-called die-cast) made of, for example, aluminum or an aluminum alloy. The inside of the housing 11 is partitioned by a partition 56 into a connection chamber 21 on the proximal end 10A side of the instrument body 10 and a light source chamber 58 on the distal end 10B side. A clamp 5 described later is disposed in the connection chamber 21, and a light source unit 50 described later is disposed in the light source chamber 58.

The front cover 12 is formed of a material such as glass or polycarbonate having corrosion resistance and strength, and has light transmittance. The front frame 13 may be a casting made of aluminum, an aluminum alloy, or the like, or may be formed of a material other than a metal such as reinforced plastic having corrosion resistance and strength.
The instrument main body 10 includes a base portion 20 on the base end 10A side. The base 20 is formed integrally with the housing 11. A clamp 5 for attaching the instrument main body 10 to a support column or a support member is attached to the base 20.

  The casing 11 is formed in a box shape in which a bottom surface 11A, which is a surface facing the irradiated surface in an installed state, is opened. The light source chamber 58 is exposed to the outside through the open bottom surface 11 </ b> A of the housing 11. The front cover 12 covers the open bottom surface 11 </ b> A of the housing 11 and is configured to waterproof the inside of the light source chamber 58. A packing 18 is attached to the front cover 12 along the entire circumference of the outer ring. The packing 18 seals the space between the front cover 12 and the inner surface of the light source chamber 58 in a watertight manner.

  The front frame 13 is used to fix the front cover 12 to the bottom surface 11 </ b> A of the housing 11, and has an outer ring shape that is substantially the same as the outer ring shape of the housing 11. The front frame 13 is provided with an emission opening 14 that allows the front cover 12 to face the irradiated surface. The packing 18 is interposed between the outer ring of the front cover 12 and the inner surface of the housing 11, and has a substantially U-shaped cross section configured to be interposed between the bottom surface 11 </ b> A of the housing 11 and the front frame 13. It is formed in a shape. As a result, the housing 11 has the front cover 12 fixed to the bottom surface 11A by the front frame 13 so that the bottom surface 11A is closed and the inside of the light source chamber 58 is waterproofed.

A light source unit 50 is housed in the instrument body 10 as shown in FIG. The light source unit 50 includes a plurality of LEDs 53, which are examples of light emitting elements, as light sources. The light source unit 50 includes a mounting substrate 51 on which a plurality of LEDs 53 are mounted, and an optical member 55 that controls light from the LEDs 53. The optical member 55 is provided with a plurality of lenses 54 arranged so as to cover each LED 53 so as to correspond to each LED 53. The light source unit 50 is disposed with the light emitting surface side facing the front cover 12. Accordingly, the lighting fixture 1 is configured such that light from the light source unit 50 is emitted from the emission opening 14 through the front cover 12 and irradiates the irradiated surface.
In addition, a power supply unit 60 is housed inside the housing 11 in line with the light source unit 50. The power supply unit 60 is a device that converts commercial power supplied from the outside of the lighting fixture 1 in accordance with the standard of the light source unit 50.

  FIG. 4 is a diagram illustrating an internal configuration of the base 20. As shown in FIG. 4, the base 20 is formed in a hollow box shape, and the internal space is configured as a connection chamber 21. Inside the connection chamber 21, the wiring drawn into the base 20 through the clamp 5 is connected to the wiring from the light source unit 50 and the power supply unit 60 housed in the instrument body 10. The base 20 is provided with a lid 22 that waterproofs the connection chamber 21. The lid 22 is provided on the top surface 11B of the housing 11 so as to be openable and closable. The connection chamber 21 is configured to be opened to the outside from the top surface 11B side of the housing 11 when the lid body 22 is opened, and to be waterproofed when the lid body 22 is closed.

FIG. 5 is a cross-sectional view of the luminaire 1.
As shown in FIG. 5, the housing 11 is provided with a plurality of heat radiation fins 16 on the top surface 11 </ b> B. A plurality of heat radiation fins 16 are provided on the top surface 11 </ b> B at positions corresponding to the back surface of the attachment surface 15 to which the light source unit 50 is attached inside the housing 11. Accordingly, the heat transferred from the light source unit 50 to the mounting surface 15 is easily transmitted to the heat radiation fins 16 provided on the back surface portion of the mounting surface 15 and is radiated from the heat radiation fins 16 to the atmosphere. Therefore, the light source unit 50 does not become high temperature, and the LED 53 can be configured to be hardly affected by heat.

A recess 30 that houses the power supply unit 60 is provided inside the housing 11. The recess 30 is provided by denting the top surface of the housing 11 to the opposite side of the light emission direction of the light source unit 50 attached to the attachment surface 15. The concave portion 30 extends over the extending range of the mounting surface 15 in the length direction.
The power supply unit 60 includes a power supply board 61 and a plurality of types of electronic components 62 mounted on the surface of the power supply board 61. The power supply substrate 61 is formed in a long plate shape from an insulating material. The power supply unit 60 is housed inside the power supply case 63 and is housed inside the housing 11. The power supply case 63 is formed in a rectangular cylindrical shape from an insulating resin material such as PP resin.

  A pair of recesses 30 is provided at a position sandwiching the mounting surface 15 therebetween. Further, the pair of recesses 30 are provided on both sides of the mounting surface 15 so as to be aligned with the mounting surface 15 along the width direction of the housing 11, that is, the lane axis direction of the lighting fixture 1. The recess 30 is formed by expanding the top surface 11B of the housing 11, and the top surface 11B of the housing 11 is provided with protruding portions 19 along the left and right edges. The protruding portion 19 is formed one step higher than the top surface 11 </ b> B and extends over the length of the light source chamber 58.

  Thus, since the recessed part 30 which accommodates the power supply part 60 is provided along with the lane axis direction, it can prevent that the dimension of the length L of the housing | casing 11 becomes large. As described above, since the lighting fixture 1 supports the base end 10A side of the fixture body 10 with the clamp 5, when the length L of the housing 11 is increased, the force (moment) applied to the clamp 5 is increased. Becomes larger. Therefore, the force applied to the clamp can be reduced by preventing the length of the casing 11 from increasing.

  By the way, as above-mentioned, as for the instrument main body 10, the top | upper surface 11B of the housing | casing 11 is a flat surface, and the protrusion part 19 is formed in the top | upper surface 11B along the both right and left edges of this flat surface. Because it is provided, it is easy to accumulate snow at the top during snowfall. In the installed state, the top surface 11B of the housing 11 is inclined downward from the distal end 10B toward the proximal end 10A. For this reason, rain water and snow water on the top surface 11B flow toward the base end 10A.

The protrusion 19 extends in a bank shape along the left and right side edges on the top surface 11 </ b> B of the light source chamber 58. Further, the upper surface 19 </ b> C of the protruding portion 19 is an inclined surface that is inclined obliquely downward toward the top surface 11 </ b> B of the housing 11. Inside the protruding portion 19, the power supply unit 60 is housed in the recess 30. Heat is transferred from the power supply unit 60 to the protruding portion 19, and the snow accumulated on the upper surface 19 </ b> C of the protruding portion 19 is melted by the heat from the power supply portion 60. The snowmelt generated on the upper surface D of the protrusion 19 flows to the top surface 11B along the inclined upper surface 19C. With this configuration, on the top surface 11B of the light source chamber 58, rainwater or snow water does not drop from the left and right side surfaces 19A of the light source chamber 58 and flows toward the base end 10A on the top surface 11B.
In addition, the structure provided in the front-end | tip 10B side in addition to the left and right side edges of the top | upper surface 11B may be sufficient as a protrusion part. With this configuration, rainwater or snowmelt water is guided from the tip 10B to the top surface 11B, and the generation of ice pillars at the tip 10B can be prevented.

FIG. 6 is a plan view of the housing 11 as seen from the top surface 11B side.
As shown in FIG. 6, the housing 11 is provided with a drain hole 70 that communicates from the top surface 11 </ b> B of the housing 11 to the bottom surface 11 </ b> A at the boundary between the light source chamber 58 and the connection chamber 21. The drain holes 70 are respectively provided at the bases 19 </ b> B of the pair of projecting portions 19. The drain hole 70 is provided at a position sandwiching a connecting portion 79 that connects the light source chamber 58 and the connection chamber 21 at the approximate center of the housing 11. The lid 22 is attached to the connecting portion 79. In addition, a diverting portion 80 protruding from the connecting portion 79 is provided on the top surface 11 </ b> B of the light source chamber 58. The diversion part 80 is formed by raising the top surface 11B in a slope shape inclined upward toward the base end 10A. Rainwater and snowmelt flowing on the top surface 11 </ b> B of the housing 11 toward the base end 10 </ b> A are diverted in the direction toward the left and right drain holes 70 by the inclined surface of the diverter 80.

  On the top surface 11 </ b> B of the housing 11, drainage channels 71 are formed on both sides of the flow dividing portion 80, and between the flow dividing portion 80 and the protruding portion 19, toward the drainage hole 70. Rainwater and snowmelt flowing on the top surface 11 </ b> B of the housing 11 toward the base end 10 </ b> A is guided to the left and right drainage channels 71 by the diverter 80. According to this configuration, since the drainage from the top surface 11B is divided into the two drainage holes 70, the drainage can be performed from either one of the drainage holes 70 that are easily drained. Moreover, the rainwater and the snowmelt flowing along the drainage channel 71 do not sag from the left and right side surfaces 19A by the bank-like protrusions 19. The base 19 </ b> B of the protrusion 19 may be inclined obliquely downward toward the drain hole 70.

The drainage channel 71 is provided with a guide portion 72 that guides water toward the drainage hole 70. The guide portion 72 is provided on a surface continuous from the drainage channel 71 to the drainage hole 70, and is a substantially triangular slope in a plan view formed obliquely downward toward the connecting portion 79 side. Rainwater and snowmelt flowing through the drainage channel 71 toward the base end 10 </ b> A side are guided from the base side of the diversion unit 80 to the drainage hole 70 by the guide unit 72.
According to this configuration, rainwater and snowmelt water can be drained from the portion of the top surface 11 </ b> B of the housing 11 that becomes high temperature due to heat from the light source unit 50 that is a heat source. Therefore, it is possible to prevent the ice column from being generated from the drain hole 70.

  7 is a cross-sectional view taken along the line II-II in FIG. As shown in FIG. 7, in the drain hole 70, one inner wall surface 73A on the light source chamber 58 side has a gentler slope from the top surface 11B to the bottom surface 11A than the other inner wall surface 73B on the connection chamber 21 side. It has become. According to this configuration, rainwater or snowmelt flowing through the drainage channel 71 flows along one inner wall surface 73 </ b> A on the light source chamber 58 side and is drained from the drainage hole 70. Therefore, rainwater or snowmelt water flowing through the drainage channel 71 hits the other inner wall surface 73B on the connection chamber 21 side by the momentum when reaching the drainage hole 70, and does not fall along the other inner wall surface 73B.

In the present embodiment, the instrument body 10 may be installed with an inclination so that the tip 10B is on the upper side. At this time, if the inner wall surface 73 </ b> A is inclined toward the base end 10 </ b> A, rainwater and snowmelt from the guide portion 72 may not be transmitted from the guide portion 72 to the inner wall surface 73 </ b> A. Therefore, the inclination angle of the inner wall surface 73A from the horizontal plane is formed at an angle that does not incline toward the base end 10A even when the instrument body 10 is inclined.
In the present embodiment, the angle of inclination of the inner wall surface 73A from the horizontal plane is formed at 68 °, the tiltable angle of the instrument main body 10 is set at 20 °, and even when the instrument main body 10 is tilted and installed. The inner wall surface 73A is not inclined toward the base end 10A.
Further, the lower end portion of the inner wall surface 73A is configured to be positioned below the lower end portion of the inner wall surface 72B. According to this configuration, rainwater and snowmelt can easily be drained from the inner wall surface 73A having a high temperature, and the generation of ice columns can be suppressed.
In the present embodiment, the angle of the line connecting the lower end portion of the inner wall surface 73A to the lower end portion of the inner wall surface 73B is formed at 21 °. According to this configuration, even when the instrument body 10 is inclined by 20 °, the lower end portion of 73A is positioned below the lower end portion of 73B.
In the drain hole 70, one inner wall surface 73 </ b> A on the light source chamber 58 side is heated by the heat from the light source unit 50. Thereby, it is possible to prevent the ice column from being generated from the drain hole 70 by draining rainwater or snowmelt water along the one inner wall surface 73 </ b> A of the drain hole 70.

The drain hole 70 preferably has an area of at least about 400 mm ² in plan view. Thereby, it is possible to suppress the foreign matter such as dust from being clogged in the drain hole 70.

  FIG. 8 is a cross-sectional view taken along the line III-III in FIG. 2 and shows the positional relationship between the lid 22 and the drain hole 70. As shown in FIG. 8, the guide portion 72 of the drainage channel 71 and the drainage hole 70 are covered with a lid 22 in a bowl shape. The lid 22 has a gap G between the lid 22 and the drainage channel 71 so as to guide it to the drainage hole 70 without hindering the flow of rainwater and snowmelt water flowing through the drainage channel 71. Further, the gap G between the lid body 22 and the drainage channel 71 is dammed so that foreign matter such as dust on the top surface 11B does not flow into the drainage hole 70 together with rainwater and snowmelt water flowing through the drainage channel 71. Has a function to stop. Therefore, the gap G between the lid 22 and the drainage channel 71 is preferably smaller than the gap between the lower end portion of the inner wall surface 73A of the drainage hole 70 and the lower end portion of the inner wall surface 73B.

  Thus, by covering the guide portion 72 of the drainage channel 71 and the drainage hole 70 in a bowl shape with the lid body 22, it is possible to suppress a decrease in temperature in the vicinity of the guide portion 72 and the drainage hole 70. Thereby, it is possible to suppress the generation of ice columns from the drain hole 70. Further, the snow does not go directly to the drain hole 70, and the drain hole 70 can be prevented from being clogged with snow.

As described above, in the present embodiment, the instrument main body 10 that is partitioned into the connection chamber 21 on one end side and the light source chamber 58 on the other end side is provided, and the instrument main body 10 is provided on both sides of the light source chamber 58. The protrusion 19 protrudes from the top surface 11B, and is a base 19B of the protrusion 19 and communicates with the boundary between the connection chamber 21 and the light source chamber 58 from the top surface 11B of the instrument body 10 to the bottom surface 11A. A drain hole 70 is provided.
According to this configuration, water can be drained from the top surface 11 </ b> B of the light source chamber 58 heated by the heat from the light source unit 50 to the bottom surface 11 </ b> A through the instrument main body 10, and snow melting water passes through the drain hole 70. In this case, it is possible to prevent the ice column from being generated from the drain hole 70 by being cooled. Further, the protruding portion 19 prevents snow melting water from dripping from the top surface 11B to the side surface 19A, and can prevent the generation of icicles from the side surface 19A.

  In the present embodiment, the top surface 11 </ b> B of the light source chamber 58 has the light source unit 50 thermally connected to the back surface, and is inclined downward toward the drain hole 70. According to this configuration, the snow melting water can flow toward the drain hole 70 along the top surface 11 </ b> B that is heated by the heat from the light source unit 50. Therefore, it is possible to prevent icicles from being generated from the top surface 11B or the drain hole 70 without melting the snow melting on the top surface 11B or in the drain hole 70.

  In the present embodiment, the upper surface 19 </ b> C of the protrusion 19 is inclined downward toward the top surface 11 </ b> B of the instrument body 10. According to this configuration, snow accumulated on the upper surface 19C of the projecting portion 19 and snow melting water generated on the upper surface 19C can be guided to the top surface 11B. Therefore, it is possible to prevent the snow accumulated on the upper surface 19 </ b> C of the protruding portion 19 and the snow melting water generated on the upper surface 19 </ b> C from falling from the side surface 19 </ b> A side of the protruding portion 19. Therefore, it is possible to suppress the snowfall and the generation of icicles from the instrument body 10.

  In the present embodiment, the top surface 11B of the light source chamber 58 is provided with a guide portion 72 that is inclined downward toward the drain hole 70, and the guide portion 72 is inclined toward the center side of the top surface 11B. doing. According to this configuration, the snow melting water can be efficiently guided from the top surface 11B that is heated by the heat from the light source unit 50 to the drain hole 70, and the top surface 11B is strongly influenced by the heat from the light source unit 50. It is possible to flow snow melting water from the center side to the drain hole 70. Therefore, before the snowmelt water is cooled, the water can be drained from the drain hole 70, and an ice column can be prevented from being generated from the drain hole 70.

In the present embodiment, the drain hole 70 includes the one inner wall surface 73 </ b> A on the light source chamber 58 side facing the drain hole 70 and the other inner wall surface 73 </ b> B on the connection chamber 21 side in the light source chamber. One inner wall surface 73A on the 58 side is formed to have a gentler slope than the inner wall surface 73B on the connection chamber 21 side.
Further, when the instrument body 10 is installed at an inclination, the inner wall surface 73A is formed at an angle that does not incline toward the base end 10A, and the lower end portion of the inner wall surface 73A is lower than the lower end portion of the inner wall surface 73B. It is formed so that it may be located in.
According to this configuration, it is possible to drain snow from the drain hole 70 by flowing the snow melting water along the one inner wall surface 73 </ b> A on the light source chamber 58 side that is heated by the heat from the light source unit 50. Thereby, it is possible to prevent an ice column from being generated from the drain hole 70. Moreover, it can suppress that water flows into the other inner wall surface 73B side at the side of the connection chamber 21, and can prevent an ice column from being generated from the other inner wall surface 73B at the side of the connection chamber 21. it can.

  In the present embodiment, the drain hole 70 is covered in a bowl shape with a lid 22 that closes the connection chamber 21. According to this configuration, the temperature drop of the drain hole 70 can be prevented, and the generation of icicles from the drain hole 70 can be prevented. Further, the drain hole 70 can be prevented from being clogged with foreign matters such as dust.

  In the present embodiment, the top surface 11 </ b> B of the light source chamber 58 is provided with a diverter 80 that diverts water toward the drain holes 70 provided at the roots 19 </ b> B of the pair of protrusions 19. According to this configuration, rainwater and snowmelt flowing on the top surface 11B can be divided into the two drain holes 70 and drained. Therefore, even if one drain hole 70 is clogged, the other drain hole 70 can be drained.

  In the present embodiment, the protrusion 19 is formed by expanding the top surface 11 </ b> B. According to this configuration, heat from the power supply unit 60 can be transferred to the projecting portion 19, and snow accumulated on the projecting portion 19 can be melted. Therefore, it is possible to prevent the ice column from being generated from the protrusion 19.

  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 lighting fixture 1 is used as road lighting has been described as an example. However, the present invention is not limited to this and can be applied to any lighting fixture.

  Moreover, in embodiment mentioned above, although LED53 was illustrated as an example of the light emitting element with which the light source part 50 is provided, other elements, such as an organic EL element instead of LED53, may be sufficient as a light emitting element.

  In the above-described embodiment, the configuration in which the top surface 11B of the housing 11 is bulged to form the protruding portion 19 having the recess 30 therein is not limited to this. It may be provided on the top surface 11 </ b> B without having the recess 30.

DESCRIPTION OF SYMBOLS 1 Lighting fixture 10 Appliance main body 10A Base end 10B Tip 11 Case 11A Bottom surface 11B Top surface 19 Projection portion 19A Side surface 19B Root 19C Top surface 21 Connection chamber 22 Lid 30 Recess 50 Light source portion 58 Light source chamber 60 Power source portion 70 Drain hole 71 Drain Road 72 Guide part 73A Inner wall surface 73B Inner wall surface 80 Dividing part

Claims (10)

In a lighting fixture provided with a light source chamber having a light source portion inside the fixture body,
Protruding portions that protrude from the top surface are formed along both sides of the light source chamber,
A drainage hole that communicates from the top surface to the bottom surface of the fixture body is provided at the base of the protruding portion.   The lighting apparatus according to claim 1, wherein the light source section is thermally connected to a back surface of the top surface of the light source chamber.   The lighting device according to claim 1, wherein an upper surface of the projecting portion is inclined downward toward a top surface of the device main body.   The lighting apparatus according to claim 1, wherein a power supply unit that supplies power to the light source unit is disposed inside the protruding portion.   The top surface of the light source chamber is provided with a guide portion that is inclined downward toward the drain hole, and the guide portion is inclined toward a center side of the top surface. Item 5. A lighting fixture according to any one of Items 1 to 4. The lighting fixture according to any one of claims 1 to 5, wherein the fixture main body is provided with a connection chamber at a position facing the light source chamber across the drain hole.   The surface of the light source chamber facing the surface of the drain hole and the surface of the connection chamber side of the drain hole are more inclined than the surface of the light source chamber than the surface of the connection chamber. The lighting fixture according to claim 6, wherein the lighting fixture is formed as follows.   The lighting apparatus according to claim 6 or 7, wherein the drain hole is covered in a bowl shape with a lid that closes the connection chamber.   The top surface of the light source chamber is provided with a diversion part for diverting water so as to be directed to the drainage holes respectively provided at the bases of the pair of protrusions. The lighting fixture in any one.   The drain hole is a surface on the light source chamber side facing the drain hole, and a surface on the connection chamber side is a lower end portion of the surface on the light source chamber side, and a lower end portion of the surface on the connection chamber side. The luminaire according to claim 6, wherein the luminaire is positioned lower than the luminaire.

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