JP2011154785A - Outdoor lighting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an outdoor lighting fixture capable of efficiently radiating heat from a light source and reducing frequency of maintenance work. <P>SOLUTION: The outdoor lighting fixture 1000 comprises a case 1100, a fitting part 1200, and radiating fins 1500. The case 1100 houses light emitting diodes 1400. The fitting part 1200 is connected to the case 1100 and is for fitting the case 1100 on a pole 1001. The radiating fins 1500 are placed on an outer side upper face 1110 of the case 1100. The fitting part 1200 includes a fitting shaft P extending from the pole 1001 toward the case 1100. The radiating fins 1500 extend along a direction Q crossing at right angles an extension direction of the fitting shaft P. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention generally relates to an outdoor lighting fixture, and more particularly to an outdoor lighting fixture including a light emitting diode as a light source.

  In recent years, the technology of light emitting diodes (LEDs) has progressed dramatically. Some lighting fixtures used outdoors use a light emitting diode (LED) as a light source.

  For example, Utility Model Registration No. 3131462 (Patent Document 1) describes a security light provided with a warning light composed of a plurality of light emitting diodes as light sources.

  Japanese Unexamined Patent Application Publication No. 2008-305768 (Patent Document 2) discloses a light source unit including a plurality of LEDs that illuminate white light and a plurality of LEDs that illuminate blue light. A lighting fixture is described.

  Thus, by using a light emitting diode as a light source for a security light or an outdoor lighting fixture, the light source can have a long life, and the risk of turning off the outdoor lighting fixture can be reduced. In addition, since the light source has a long life, the frequency of maintenance of the outdoor lighting fixture can be reduced.

Utility Model Registration No. 3131462 JP 2008-305768 A

  However, a light-emitting diode is used as a light source, such as a security light described in Utility Model Registration No. 3131462 (Patent Document 1) and an outdoor lighting apparatus described in Japanese Patent Application Laid-Open No. 2008-305768 (Patent Document 2). As compared with the case of using other light sources, there is a problem that the output is large and it is difficult to dissipate heat. If it is difficult to dissipate heat from the light source, it is conceivable to reduce the power consumption of the light source so that the temperature of the light source does not rise. However, if the power consumption of the light source is reduced, sufficient brightness may not be obtained for outdoor lighting.

  On the other hand, when a light source other than a light emitting diode is used, the life of the light source is shortened, and frequent maintenance is required to replace the light source.

  Accordingly, an object of the present invention is to provide an outdoor lighting apparatus that can efficiently dissipate heat from a light source and can reduce the frequency of maintenance.

  An outdoor lighting fixture according to the present invention includes a housing, a mounting portion, and a heat radiating fin. The housing accommodates the light emitting diode. The attachment portion is connected to the housing and is used for attaching the housing to the support column. The heat radiating fins are disposed on the outer upper surface of the housing. The attachment portion includes an attachment shaft that extends from the support toward the housing. The radiating fin extends along a direction orthogonal to the direction in which the mounting shaft extends.

  By providing the heat radiating fins on the outer upper surface of the housing, the heat radiation area can be increased and heat can be efficiently radiated from the inside of the housing housing the light emitting diode to the outside of the housing.

  By the way, when the heat radiating fins are arranged on the outer upper surface of the housing, dust such as dust, dust, and sand tends to be collected on the housing and the heat radiating fins. In particular, dust tends to accumulate between the housing and the attachment portion for attaching the housing to the column. If dust accumulates on the housing or the heat radiating fins, it is necessary to maintain an outdoor lighting fixture in order to remove the dust. Even if a long-life light emitting diode is used as a light source, if maintenance is required to remove dust, frequent maintenance must be performed.

  Therefore, in this outdoor lighting fixture, the heat radiating fins are arranged so as to extend along a direction orthogonal to the direction in which the mounting shaft of the mounting portion extends. For this reason, the dust on the housing and the radiation fins flows along the direction in which the radiation fin extends due to wind and rain, and flows down from the housing, so that the dust is less likely to accumulate between the housing and the mounting portion.

  By doing in this way, the outdoor illuminating device which can radiate | emit efficiently from a light source and can reduce the frequency of a maintenance can be provided.

  In the outdoor lighting fixture according to this invention, it is preferable that the outer upper surface of the housing is inclined along a direction orthogonal to the direction in which the mounting shaft extends.

  By doing in this way, the dust on a housing becomes easy to flow along an outer side upper surface by wind or rain.

  In the outdoor lighting fixture according to the present invention, the distance between the radiating fin and the mounting portion is relatively large at the central portion side of the radiating fin and relatively small at the end portion side of the radiating fin. Is preferably bent.

  By doing in this way, the dust on a housing | casing becomes easy to flow from the center part side of a housing to the outer peripheral part side, and becomes easy to flow down from a housing | casing.

  The outdoor lighting fixture according to the present invention preferably includes a plurality of heat radiation fins. The plurality of radiating fins are arranged side by side in the direction in which the mounting shaft extends, and the interval between the plurality of radiating fins is relatively small on the central portion side of the radiating fin and relatively large on the end portion side of the radiating fin. Is preferred.

  By doing in this way, the dust on a housing | casing becomes easy to flow from the center part side of a housing to the outer peripheral part side, and becomes easy to flow down from a housing | casing.

  The outdoor lighting fixture according to the present invention preferably includes two power supply units that supply power to the light-emitting diodes housed in the housing. The two power supply units are preferably arranged side by side along the direction orthogonal to the direction in which the mounting shaft extends in the center of the housing.

  By placing two power supply units in the center of the enclosure, one power supply unit is arranged at one end of the enclosure and the other power supply unit is arranged at the other end of the enclosure so The size of the housing can be made smaller than in the case where a wide interval is provided. In addition, it is possible to make it difficult to collect dust on the housing by arranging the two power supply units side by side along the direction orthogonal to the direction in which the attachment shaft extends in the center of the housing.

  As described above, according to the present invention, it is possible to provide an outdoor lighting apparatus that can efficiently dissipate heat from a light source and can reduce the frequency of maintenance.

It is a figure showing typically the whole outdoor lighting fixture concerning a 1st embodiment of the present invention. It is a perspective view showing the whole outdoor lighting fixture concerning a 1st embodiment of the present invention. It is sectional drawing when the outdoor lighting fixture which concerns on 1st Embodiment of this invention is seen from the direction of the III-III line | wire shown in FIG. It is sectional drawing when the outdoor lighting fixture which concerns on 1st Embodiment of this invention is seen from the direction of the IV-IV line | wire shown in FIG. It is a figure which shows typically the example of arrangement | positioning of a power supply part, and the shape of a housing. It is a figure which shows the example of arrangement | positioning of a power supply part typically. It is a perspective view which shows the whole outdoor lighting fixture which concerns on 2nd Embodiment of this invention. It is sectional drawing when the outdoor lighting fixture which concerns on 2nd Embodiment of this invention is seen from the direction of the VIII-VIII line shown in FIG. It is sectional drawing when the outdoor lighting fixture which concerns on 2nd Embodiment of this invention is seen from the direction of the IX-IX line | wire shown in FIG. It is a figure which shows typically another example of the outdoor lighting fixture which concerns on 2nd Embodiment of this invention. It is a top view which shows the whole outdoor lighting fixture which concerns on 3rd Embodiment of this invention. It is a perspective view which shows the whole outdoor lighting fixture which concerns on 3rd Embodiment of this invention. It is a top view which shows the whole outdoor lighting fixture which concerns on 4th Embodiment of this invention. It is a top view which shows the whole outdoor lighting fixture which concerns on 5th Embodiment of this invention.

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

(First embodiment)
As shown in FIG. 1, the outdoor lighting apparatus 1000 according to the first embodiment of the present invention mainly includes a housing 1100 and a mounting portion 1200. In the housing 1100, for example, a power supply unit 1300 and a light emitting diode (LED) 1400 are accommodated. The housing 1100 is attached to the support column 1001 via the attachment portion 1200. The support column 1001 stands on the ground 1002 outdoors. A wiring 1003 is arranged in the support column 1001. The wiring 1003 supplies power to the power supply unit 1300 in the housing 1100. The power supply unit 1300 supplies power to the light emitting diode 1400.

  As shown in FIG. 2, a plurality of radiating fins 1500 are arranged on the outer upper surface 1110 of the housing 1100 of the outdoor lighting fixture 1000. The radiating fin 1500 extends along a direction Q orthogonal to a mounting axis P extending from the support column 1001 toward the housing 1100.

  As shown in FIG. 3, a light emitting diode 1400 is disposed on the inner upper surface of the housing 1100 of the outdoor lighting fixture 1000. The light emitting diode 1400 is mounted on a light emitting diode substrate 1410 installed on the inner upper surface of the housing 1100. The light emitting diode 1400 is covered with a lens 1420 from below. The lower surface of the housing 1100 is formed by a glass plate 1600.

  Two power supply units 1300 are accommodated in the housing 1100. The two power supply units 1300 are arranged at the center in the left-right direction inside the housing 1100.

  As shown in FIG. 4, the heat radiation fins 1500 of the outdoor lighting fixture 1000 are arranged on the outer upper surface 1110 of the housing 1100 so as to extend in the vertical direction. A column fixing bracket 1210 for housing a column 1001 (FIG. 1) to which the housing 1100 is mounted is accommodated in the mounting portion 1200 of the outdoor lighting fixture 1000. By fixing the column 1001 to the column fixing bracket 1210, the entire outdoor lighting fixture 1000 is fixed to the column 1001. The wiring 1003 (FIG. 1) inside the column 1001 is connected to the column fixing bracket 1210. Power is supplied to the power supply unit 1300 from the wiring 1003 through the support fixture 1210.

  As shown in FIGS. 1 to 4, when power is supplied from the wiring 1003 to the power supply unit 1300 through the support fixture 1210, the power supply unit 1300 supplies the supplied power to the light emitting diode 1400. At this time, the power supply unit 1300 converts the AC voltage into a DC voltage and supplies it. When power is supplied to the light emitting diode 1400, the light emitting diode 1400 and the light emitting diode substrate 1410 generate heat. The light emitting diode 1400 is attached to the inner upper surface of the housing 1100 via the light emitting diode substrate 1410. A plurality of heat radiation fins 1500 are arranged on the outer upper surface 1110 of the housing 1100. Heat generated from the light emitting diode 1400 and the light emitting diode substrate 1410 is transmitted to the heat radiating fins 1500 through the housing 1100 and radiated from the heat radiating fins 1500 to the outside. Compared with the case where the heat dissipating fins 1500 are not disposed, the heat dissipating area is increased and heat is efficiently radiated.

  The outdoor lighting fixture 1000 is disposed outdoors. Therefore, dust such as dust, dust, and sand may be placed on the radiation fin 1500 or the casing 1100. However, since the radiating fin 1500 extends along the direction Q perpendicular to the mounting axis P, dust on the radiating fin 1500 and the housing 1100 flows along the surface of the radiating fin 1500 due to rain and wind. Drops down from the enclosure 1100. Dust is less likely to accumulate between the housing 1100 and the attachment portion 1200.

  As described above, the outdoor lighting fixture 1000 includes the housing 1100, the attachment portion 1200, and the heat radiating fins 1500. The housing 1100 houses the light emitting diode 1400. The attachment portion 1200 is connected to the housing 1100 to attach the housing 1100 to the support column 1001. The radiating fin 1500 is disposed on the outer upper surface 1110 of the housing 1100. The mounting portion 1200 includes a mounting shaft P that extends from the support column 1001 toward the housing 1100. The radiating fin 1500 extends along a direction Q orthogonal to the direction in which the mounting shaft P extends.

  By providing the heat radiation fins 1500 on the outer upper surface 1110 of the housing 1100, the heat radiation area can be increased, and heat can be efficiently radiated from the inside of the housing 1100 housing the light emitting diode 1400 to the outside of the housing 1100.

  When the radiating fins 1500 are arranged on the outer upper surface 1110 of the housing 1100, dust such as dust, dust, and sand is likely to be collected on the housing 1100 and the radiating fins 1500. In particular, dust tends to accumulate between the housing 1100 and the attachment portion 1200 for attaching the housing 1100 to the support column 1001. When dust accumulates on the housing 1100 or the heat radiating fins 1500, the outdoor lighting fixture 1000 needs to be maintained in order to remove the dust. Even when the light-emitting diode 1400 having a long life is used as the light source, frequent maintenance is required if maintenance for removing dust is necessary.

  Therefore, in the outdoor lighting fixture 1000, the heat radiating fins 1500 are arranged so as to extend along a direction Q orthogonal to the direction in which the mounting shaft P of the mounting portion 1200 extends. For this reason, the dust on the casing 1100 and the radiation fin 1500 flows along the direction in which the radiation fin 1500 extends due to wind and rain, and flows down from the casing 1100. It becomes difficult to collect.

  By doing so, it is possible to provide an outdoor lighting apparatus 1000 that can efficiently dissipate heat from the light source and can reduce the frequency of maintenance.

  Next, the relationship between the arrangement of the power supply unit 1300 and the efficiency of heat dissipation, the difficulty of collecting dust, and the ease of light irradiation will be described. As shown in (A) of FIG. 5, the two power supply units 1300 of the outdoor lighting fixture 1000 (FIGS. 1 to 4) are disposed in the central portion in the left-right direction within the housing 1100. The outer upper surface 1110 of the housing 1100 is highest and protrudes upward in the central portion where the power supply unit 1300 is disposed, and is lower than the central portion at the left and right end portions. By doing so, the dust on the housing 1100 and the radiation fin 1500 is likely to flow down due to rain or wind, as indicated by the two-dot chain line arrow in the figure. Further, since the light emitting diode 1400 and the light emitting diode substrate 1410 are directly attached to the housing 1100, heat generated in the light emitting diode 1400 and the light emitting diode substrate 1410 is easily transmitted to the housing 1100, and is efficiently radiated. In addition, light emitted from the light emitting diode 1400 is not blocked by the power supply unit 1300 or the like.

  As shown in FIG. 5B, in the outdoor lighting fixture 1010, the power supply unit 1300 is disposed near the left and right ends of the housing 1101, and the outer upper surface 1111 of the housing 1101 is shaped into the shape of the power supply unit 1300. It is along. In this case, the left and right end portions of the outer upper surface 1111 of the casing 1101 protrude upward from the center portion. Also in the case shown in FIG. 5B, since the light emitting diode 1400 and the light emitting diode substrate 1410 are directly attached to the housing 1101, heat generated in the light emitting diode 1400 and the light emitting diode substrate 1410 is easily transmitted to the housing 1101. , Efficiently dissipate heat. In addition, light emitted from the light emitting diode 1400 is not blocked by the power supply unit 1300 or the like. However, when the left and right end portions of the outer upper surface 1111 of the casing 1101 are raised, dust on the casing 1101 and the radiation fins 1501 is less likely to be washed away by rain or wind as indicated by the two-dot chain arrows in the figure.

  As shown in FIG. 5C, in the outdoor lighting fixture 1020, the power supply unit 1300 is disposed near the left and right ends of the housing 1102, and the outer upper surface 1112 of the housing 1102 is shaped into the shape of the power supply unit 1300. It is flat without being along. In this case, dust on the casing 1102 and the radiating fins 1502 flows down from the casing 1102 due to rain or wind as indicated by a two-dot chain arrow in the drawing. Further, since the light emitting diode 1400 and the light emitting diode substrate 1410 are directly attached to the housing 1102, heat generated in the light emitting diode 1400 and the light emitting diode substrate 1410 is easily transmitted to the housing 1102, and is efficiently radiated. However, as shown in FIG. 5C, since the light emitting diode 1400 is mounted on the upper side of the lower surface of the power supply unit 1300, a part of the light emitted from the light emitting diode 1400 is blocked by the power supply unit 1300. .

  As shown in FIG. 5D, in the outdoor lighting fixture 1030, the power supply unit 1300 is arranged in the vicinity of the left and right ends of the housing 1103, and the outer upper surface 1113 of the housing 1103 has the shape of the power supply unit 1300. Further, the light emitting diode 1400 is disposed below the lower surface of the power supply unit 1300. The light emitting diode 1400 is supported in the housing 1103 by the inner fin 1430. In this case, dust on the casing 1103 and the radiation fins 1503 flows down from the casing 1103 due to rain or wind as indicated by a two-dot chain arrow in the drawing. In addition, by disposing the light emitting diode 1400 below the lower surface of the power supply unit 1300, part of light emitted from the light emitting diode 1400 is not blocked by the power supply unit 1300. However, the light emitting diode 1400 and the light emitting diode substrate 1410 are not directly attached to the inner upper surface of the housing 1103. Therefore, compared with the case shown in FIGS. 5A to 5C, the heat generated in the light emitting diode 1400 cannot be efficiently radiated.

  As described above, in the outdoor lighting fixture 1000 illustrated in FIG. 5A, heat dissipation efficiency is high, dust easily flows down, and light emitted from the light-emitting diode 1400 is not blocked by the power supply unit 1300. On the other hand, in the outdoor lighting fixture 1010 shown in FIG. 5B, the efficiency of heat dissipation is high, and the light emitted from the light emitting diode 1400 is not blocked by the power supply unit 1300, but the dust hardly flows down. In the outdoor lighting fixture 1020 illustrated in FIG. 5C, heat dissipation efficiency is high and dust easily flows down, but light emitted from the light emitting diode 1400 is blocked by the power supply unit 1300. In the outdoor lighting fixture 1030 shown in FIG. 5D, dust easily flows down, and light emitted from the light emitting diode 1400 is not blocked by the power supply unit 1300, but heat dissipation efficiency is not good.

  In this manner, by arranging the two power supply units 1300 in the central portion in the left-right direction in the housing 1100, heat dissipation is efficient, dust easily flows down, and light emitted from the light emitting diode 1400 is blocked by the power supply unit 1300. You can make things disappear.

  Moreover, as shown to (A) of FIG. 6, in the outdoor lighting fixture 1040, the two power supply parts 1300 of width W1 are arrange | positioned so that the width W1 may extend along the direction Q where the radiation fin 1504 extends. . In this way, the width along the direction Q on the outer upper surface 1114 of the housing becomes the width W1 of the power supply unit 1300. On the other hand, as shown in FIG. 6B, in the outdoor lighting fixture 1000 according to the first embodiment, the two power supply units 1300 having the width W1 are attached in a direction orthogonal to the direction Q in which the radiating fin 1500 extends, that is, attached. By arranging the width W1 to extend in the direction in which the axis P extends, the width W2 along the direction Q on the outer upper surface 1110 of the housing can be made smaller than the width W1 of the power supply unit 1300. By arranging the power supply unit 1300 as shown in FIG. 6B and reducing the width along the direction Q on the outer upper surface 1110 of the housing, dust on the outer upper surface 1110 of the housing can easily flow down from the housing. .

  As described above, the outdoor lighting fixture 1000 includes the two power supply units 1300 that supply power to the light emitting diode 1400 housed in the housing 1100. The two power supply units 1300 are arranged side by side along a direction Q orthogonal to the direction in which the mounting shaft P extends in the center of the housing 1100.

  By arranging the two power supply units 1300 in the center of the housing 1100, one power supply unit 1300 is arranged at one end of the housing 1100, and the other power supply unit 1300 is arranged at the other end of the housing 1100. Thus, the size of the housing 1100 can be made smaller than when a wide space is provided between the power supply units 1300. Further, by arranging the two power supply units 1300 side by side along the direction Q orthogonal to the direction in which the mounting shaft P extends in the center of the housing 1100, it is possible to make it difficult to collect dust on the housing 1100.

(Second Embodiment)
As shown in FIG. 7, in the outdoor lighting fixture 2000 of the second embodiment, a plurality of radiating fins 2500 are arranged on the outer upper surface 2110 of the housing 2100. The radiating fin 2500 extends along a direction Q orthogonal to the mounting axis P extending from the column 2001 toward the housing 2100.

  As shown in FIG. 8, a light emitting diode 2400 is housed inside a housing 2100 of the outdoor lighting fixture 2000. The light emitting diode 2400 is mounted on the light emitting diode substrate 2410. The light emitting diode substrate 2410 is attached to the aluminum plate 2710. The aluminum plate 2710 is supported by a plurality of inner fins (ribs) 2711 extending downward from the inner upper surface of the housing 2100. Each inner fin 2711 is connected almost directly above the light emitting diode 2400. The lower surface of the housing 2100 is formed by a glass plate 2600.

  Two power supply units 2300 are accommodated in the housing 2100. The two power supply units 2300 are arranged at the left and right ends in the housing 2100.

  The outer upper surface 2110 of the housing 2100 is inclined from the horizontal plane in a curved shape so that a convex surface is formed on the upper surface along a direction Q perpendicular to the attachment axis P (FIG. 7).

  As shown in FIG. 9, the radiation fins 2500 of the outdoor lighting fixture 2000 are arranged on the outer upper surface 2110 of the housing 2100 so as to extend in the vertical direction. Inside the attachment portion 2200 of the outdoor lighting fixture 2000, a support fixture 2210 for storing a support 2001 to which the housing 2100 is attached is stored. By fixing the column 2001 to the column fixing bracket 2210, the entire outdoor lighting fixture 2000 is fixed to the column 2001. The wiring inside the column 2001 is connected to the column fixing bracket 2210. Power is supplied to the power supply unit 2300 (FIG. 8) from the wiring via the support fixture 2210.

  As shown in FIGS. 7 to 9, when power is supplied from the wiring to the power supply unit 2300 through the column fixing bracket 2210, the power supply unit 2300 supplies the supplied power to the light emitting diode 2400. At this time, the power supply unit 2300 converts the AC voltage into a DC voltage and supplies it. When power is supplied to the light emitting diode 2400, the light emitting diode 2400 and the light emitting diode substrate 2410 generate heat. Heat generated from the light emitting diode 2400 and the light emitting diode substrate 2410 is transmitted to the heat radiating fins 2500 through the aluminum plate 2710, the inner fins 2711, and the housing 2100, and is radiated to the outside from the heat radiating fins 2500. Since each inner fin 2711 is arranged almost directly above the light emitting diode 2400, heat generated from the light emitting diode 2400 is easily transmitted to the inner fin 2711. Thus, heat generated from the light emitting diode 2400 can be efficiently transmitted to the housing 2100 and the heat radiating fins 2500 and radiated to the outside of the housing 2100.

  The outdoor lighting fixture 2000 is disposed outdoors. Therefore, dust such as dust, dust, and sand may be placed on the radiation fin 2500 or the housing 2100. However, since the radiating fin 2500 extends along the direction Q perpendicular to the mounting axis P, the dust on the radiating fin 2500 and the housing 2100 flows along the surface of the radiating fin 2500 due to rain and wind. Drops down from the enclosure 2100. The outer upper surface 2110 of the housing 2100 is inclined in a curved shape so that a convex surface is formed on the upper surface along a direction Q orthogonal to the direction in which the attachment axis P extends. In addition, the dust placed on the central portion in the direction along the direction Q also flows along the curved upper surface and easily falls down from the housing 2100.

  As described above, in the outdoor lighting fixture 2000 of the second embodiment, the outer upper surface 2110 of the housing 2100 is inclined along the direction Q orthogonal to the direction in which the attachment axis P extends.

  By doing in this way, the dust on the housing 2100 is likely to flow along the outer upper surface 2110 by wind or rain.

  In the second embodiment, the outer upper surface 2110 of the housing 2100 is inclined in a curved shape, but the outer upper surface 2110 may be inclined in an inclined shape. The outer upper surface 2110 of the housing 2100 is formed of, for example, a flat plate, and may be inclined in a slope shape so that a convex surface is formed on the upper surface along a direction Q orthogonal to the attachment axis P. As described above, the outer upper surface 2110 may be curved or inclined as long as it is inclined from the horizontal plane. By doing in this way, the dust on the housing 2100 is likely to flow along the convex surface by wind or rain.

  As shown in FIG. 10A, as another example of the outdoor lighting fixture 2000 (FIG. 7) of the second embodiment, in the outdoor lighting fixture 2010, the outer upper surface 2111 of the housing 2101 is flat. It is formed and inclined from the horizontal plane in a slope shape. The outer upper surface 2111 is inclined so that the right end is relatively high and the left end is relatively low in FIG. The heat radiating fins 2501 are mounted on the inclined outer upper surface 2111. As described above, the outer upper surface 2111 is inclined, so that dust on the housing 2101 is likely to flow along the outer upper surface 2111 by wind or rain as indicated by a two-dot chain line arrow in the drawing.

  As shown in FIG. 10B, as another example of the outdoor lighting fixture 2000 (FIG. 7) of the second embodiment, in the outdoor lighting fixture 2020, the outer upper surface 2112 of the casing 2012 is formed by a curved surface. It is inclined from the horizontal plane in a curved shape. The outer upper surface 2112 is inclined so that the right end is relatively high and the left end is relatively low in FIG. The radiating fins 2502 are mounted on the inclined outer upper surface 2112. As described above, the outer upper surface 2112 is inclined, so that dust on the housing 2102 is likely to flow along the outer upper surface 2112 by wind or rain as indicated by a two-dot chain line arrow in the drawing.

  As shown in FIG. 10C, as still another example of the outdoor lighting fixture 2000 (FIG. 7) of the second embodiment, in the outdoor lighting fixture 2030, the outer upper surface 2113 of the housing 2013 is a flat surface. And is inclined in a slope shape from a horizontal plane. The outer upper surface 2113 is inclined so as to be relatively low at both the left and right ends in FIG. 10C and relatively high at the center, and a convex surface is formed on the upper surface of the outer upper surface 2113. The heat radiating fins 2503 are mounted on the inclined outer upper surface 2113. As described above, the outer upper surface 2113 is inclined, so that dust on the housing 2103 is likely to flow along the outer upper surface 2113 by wind or rain as indicated by a two-dot chain line arrow in the drawing.

  As described above, as long as the outer upper surfaces 2111, 2112, and 2113 are inclined from the horizontal plane, a convex surface may not be formed on the upper surface, and a convex surface may be formed on the upper surface. Further, the outer upper surfaces 2111, 2112, and 2113 may be formed in a curved surface shape or may be formed in a planar shape.

  Other configurations and effects of the outdoor lighting fixture 2000 of the second embodiment are the same as those of the outdoor lighting fixture 1000 (FIGS. 1 to 6) of the first embodiment.

(Third embodiment)
As shown in FIG. 11, the outdoor lighting fixture 3000 of the third embodiment mainly includes a housing 3100, a mounting portion 3200, and a plurality of heat radiation fins 3500 arranged on the housing 3100. The radiating fins 3500 are arranged so as to extend along a direction Q perpendicular to the direction in which the mounting shaft P extends. In the radiation fin 3500, the distance D1 between the radiation fin 3500 and the mounting portion 3200 on the center side of the radiation fin 3500 is larger than the distance D2 between the radiation fin 3500 and the attachment portion 3200 on the end side of the radiation fin 3500. In this way, the heat radiating fin 3100 is bent at the center.

  As shown in FIG. 12, the outdoor lighting fixture 3000 may be attached to the column 3001 so that the attachment portion 3200 side is low and the opposite side to the attachment portion 3200 is high. When the outdoor lighting fixture 3000 is attached in this way, the heat radiating fins 3500 form slopes, so that dust is likely to flow down from the housing 3100 as indicated by the two-dot chain arrows in the figure.

  As described above, in the outdoor lighting fixture 3000 according to the third embodiment, the distance between the radiating fin 3500 and the mounting portion 3200 is relatively large on the center side of the radiating fin 3500, and the end side of the radiating fin 3500. That is, the radiating fin 3500 is bent so as to be relatively small on the outer peripheral side of the housing 3100.

  By doing in this way, the dust on the housing 3100 easily flows from the central portion side to the outer peripheral portion side of the housing 3100 and easily flows down from the housing 3100.

  Other configurations and effects of the outdoor lighting fixture 3000 of the third embodiment are the same as those of the outdoor lighting fixture 1000 (FIGS. 1 to 6) of the first embodiment.

(Fourth embodiment)
As shown in FIG. 13, the outdoor lighting fixture 4000 according to the fourth embodiment of the present invention mainly includes a housing 4100, a mounting portion 4200, and a plurality of radiating fins 4500 arranged on the housing 4100. The plurality of radiating fins 4500 are arranged side by side in the direction in which the mounting shaft P extends. Each radiating fin 4500 is arranged so as to extend along a direction Q orthogonal to the direction in which the mounting shaft P extends. The plurality of radiating fins 4500 are also configured so that the distance D3 between the radiating fins 4500 on the center side of the radiating fins 4500 is smaller than the distance D4 between the radiating fins 4500 on the end side of the radiating fins 4500. Is formed so as to be thicker at the center portion side and thinner at the end portion side of the radiating fin 4500, that is, at the outer peripheral portion side of the housing 4500.

  As described above, the outdoor lighting fixture 4000 of the fourth embodiment includes the plurality of heat radiation fins 4500. The plurality of radiating fins 4500 are arranged side by side in the direction in which the mounting shaft P extends, and the interval between the plurality of radiating fins 4500 is relatively small on the center side of the radiating fins 4500, and on the end side of the radiating fins 4500. Relatively large.

  By doing in this way, the dust on the housing 4100 easily flows from the central portion side to the outer peripheral portion side of the housing 4100 and easily flows down from the housing 4100.

  Other configurations and effects of the outdoor lighting fixture 4000 of the fourth embodiment are the same as those of the outdoor lighting fixture 1000 (FIGS. 1 to 6) of the first embodiment.

(Fifth embodiment)
As shown in FIG. 14, the outdoor lighting fixture 5000 of the fifth embodiment mainly includes a housing 5100, a mounting portion 5200, and a plurality of heat radiation fins 5500 arranged on the housing 5100. The radiating fins 5500 are arranged so as to extend along a direction Q orthogonal to the direction in which the mounting shaft P extends. In the heat dissipation fin 5500, the distance D5 between the heat dissipation fin 5500 and the mounting portion 5200 on the center side of the heat dissipation fin 5500 is larger than the distance D6 between the heat dissipation fin 5500 and the mounting portion 5200 on the end side of the heat dissipation fin 5500. Thus, it is bent at the central portion side of the radiating fin 5500.

  The plurality of radiating fins 5500 are arranged side by side in the direction in which the mounting shaft P extends. Each radiating fin 5500 is arranged so as to extend along a direction Q orthogonal to the direction in which the mounting shaft P extends. The plurality of radiating fins 5500 are also configured such that the distance D7 between the radiating fins 5500 on the center side of the radiating fins 5500 is smaller than the distance D8 between the radiating fins 5500 on the end side of the radiating fins 5500. It is formed so as to be thicker at the center side and thinner at the end side of the radiating fin 5500.

  As described above, in the outdoor lighting fixture 5000 of the fifth embodiment, the distance between the radiating fin 5500 and the mounting portion 5200 is relatively large on the central portion side of the radiating fin 5500, and the end side of the radiating fin 5500 is. That is, the radiating fin 5500 is bent so as to be relatively small on the outer peripheral side of the housing 5100.

  Moreover, the outdoor lighting fixture 5000 of the fifth embodiment includes a plurality of heat radiation fins 5500. The plurality of radiating fins 5500 are arranged side by side in the direction in which the mounting shaft P extends, and the interval between the plurality of radiating fins 5500 is relatively small on the center side of the radiating fins 5500, and the end side of the radiating fins 5500, That is, it is relatively large on the outer peripheral side of the housing 5100.

  By doing in this way, the dust on the housing 5100 easily flows from the central portion side to the outer peripheral portion side of the housing 5100, and easily flows down from the housing 5100.

  Other configurations and effects of the outdoor lighting fixture 5000 of the fifth embodiment are the same as those of the outdoor lighting fixture 1000 (FIGS. 1 to 6) of the first embodiment.

  The embodiment disclosed above should be considered as illustrative in all points and not restrictive. The scope of the present invention is shown not by the above embodiments but by the scope of claims, and includes all modifications and variations within the meaning and scope equivalent to the scope of claims.

  1000, 1010, 1020, 1030, 2000, 2010, 2020, 2030, 3000, 4000, 5000: outdoor lighting equipment, 1001, 2001: support, 1100, 1101, 1102, 1103, 2100, 2101, 1022, 2103, 3100 4100, 5100: Housing, 1110, 1111, 1112, 1113, 2110, 2111, 2112, 2113: Outer upper surface, 1200, 2200, 3200, 4200, 5200: Mounting part, 1300, 2300: Power supply part, 1400, 2400: Light-emitting diodes, 1500, 2500, 3500, 4500, 5500: radiating fins.

Claims (5)

A housing for housing the light emitting diode;
An attachment portion connected to the housing for attaching the housing to a support;
A heat dissipating fin disposed on the outer upper surface of the housing;
The attachment portion includes an attachment shaft extending from the support column toward the housing,
The said heat radiating fin is an outdoor lighting fixture extended along the direction orthogonal to the direction where the said attachment axis | shaft extends.   The outdoor lighting fixture according to claim 1, wherein an outer upper surface of the casing is inclined along a direction orthogonal to a direction in which the attachment shaft extends.   The radiating fin is bent so that a distance between the radiating fin and the mounting portion is relatively large on a central portion side of the radiating fin and relatively small on an end portion side of the radiating fin. The outdoor lighting fixture of Claim 1 or Claim 2. A plurality of the heat dissipating fins;
The plurality of radiating fins are arranged side by side in a direction in which the mounting shaft extends,
The interval between the plurality of heat radiation fins is relatively small on a central portion side of the heat radiation fins, and is relatively large on an end portion side of the heat radiation fins. The outdoor lighting apparatus as described. Comprising two power supply units for supplying power to the light emitting diodes housed in the housing;
5. The outdoor according to claim 1, wherein the two power supply units are arranged side by side along a direction orthogonal to a direction in which the attachment shaft extends in the center of the housing. Lighting equipment.

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