JP5700288B2 - lighting equipment - Google Patents

Description

  Embodiments described herein relate generally to a lighting fixture using a solid light emitting element such as a light emitting diode.

  In recent years, solid-state light-emitting elements, for example, light-emitting diodes (hereinafter referred to as “LEDs”) have been adopted as light sources for general illumination and various lighting fixtures have been developed due to their improved luminous efficiency. Particularly in recent years, lighting fixtures used outdoors, such as street lights and security lights, have been commercialized.

JP 2010-277828 A

  However, street lamps installed in this kind of parks, etc., need to provide uniform and bright illumination over a wide area around the street lights, and how to effectively obtain this wide range of light distribution characteristics. Has become an important issue.

  This invention is made | formed in view of the said subject, and aims at providing the lighting fixture which can acquire the light distribution characteristic over a wide range of the perimeter of the to-be-irradiated surface.

The lighting fixture according to the embodiment includes a fixture main body, a cover member, a light emitting portion, and a mounting plate . The fixture main body has an opening on one end side, a support hole is integrally formed on the other end side, and a cylinder is formed inside. Shaped cavity. Cover member, the provided equipment main body, which has a spherical shape of the light transmitting portion in which an opening is formed in the upper and lower, with a Hisareru canopy above the opening. A plurality of light emitting portions, Ru solid state light emitters Tona. The attachment plate has a disc shape, and an insertion hole is formed in the center portion so as to face the opening of the instrument body, and supports the light emitting portion so as to surround the insertion hole.

  ADVANTAGE OF THE INVENTION According to this invention, the lighting fixture which can acquire the light distribution characteristic over the wide range of the perimeter of the to-be-irradiated surface can be provided.

The front view which shows the lighting fixture which concerns on embodiment. Similarly, the longitudinal cross-sectional view of a lighting fixture (The light source unit is not cross-sectionalized.). The longitudinal cross-sectional view which similarly cut the lighting fixture along the line 4a-a. The top view which similarly shows a lighting fixture with a canopy removed. The light emission part of a lighting fixture is shown similarly, (a) is sectional drawing which follows the aa line in (b) figure, (b) is a front view. The figure which similarly shows the relationship between the optical axis of a lighting fixture, a light emission part, and a cover member (the light emission part H in the figure was shown with the front view seen from the arrow d direction). The top view equivalent to FIG. 4 which similarly shows the relationship of the tangent of the light emission part and light transmissive part of a lighting fixture. Similarly, the state where the lighting fixtures are installed in the park is shown, (a) is a view seen from the front side, and (b) is a schematic reduced view of the light distribution state in the entire peripheral direction centering on the street light. Light distribution diagram. Sectional drawing equivalent to FIG. 3 which similarly shows the 1st modification of a lighting fixture. The modification of a lighting fixture is similarly shown, (a) is a top view which shows a 2nd modification, (b) is a side view which shows a 2nd modification, (c) is a top view which shows a 3rd modification. (D) is a side view showing a third modification, (e) is a top view showing a fourth modification, (f) is a side view showing a fourth modification, and (g) is a fifth view. The top view which shows a modification, (h) is a side view which shows a 5th modification. The figure equivalent to FIG. 6 which shows the relationship between the optical axis of the lighting fixture which similarly shows a 6th modification, a light emission part, and a cover member.

Hereinafter, an embodiment of a lighting apparatus will be described with reference to the drawings. The lighting fixture of this embodiment comprises the street light installed in a park etc., and the street light 10 is provided in the fixture main body 11 and the fixture main body, as shown in FIGS. It comprises a light-transmitting cover member 12 having a transmission part 12a, a plurality of light-emitting parts 13 made of a solid light-emitting element 13a, and a mounting plate 11d that supports the light-emitting parts .

  As shown in FIG. 2, the instrument body 11 is made of aluminum die-cast with good thermal conductivity, has an opening 11 a on one end side, and integrally forms a support hole 11 b on the other end side. A cylindrical cavity portion 11c is provided, and is configured to function as a holder for supporting the instrument body to the pole P. A ring-shaped support step portion 11a1 is formed on the outer peripheral portion of the opening portion 11a on the one end side, and a mounting plate 11d is fixed to the center portion with a screw n1 (FIG. 3).

The mounting plate 11d is made of a metal having thermal conductivity, in the present embodiment, made of disc-shaped aluminum , and is formed with a wire insertion hole 11d1 that is a circular insertion hole penetrating through a central portion. A flat ring-shaped light source support portion 11d2 for supporting a light emitting portion 13 to be described later is formed around the periphery. The mounting plate 11d has a pair of boss portions formed on the back side of the light source support portion 11d2, and a screw n1 is inserted through the pair of boss portions so that two locations are fixed to the inner surface of the opening 11a of the instrument body 11. .

  At this time, the disk-shaped packing member S1 is interposed between the mounting plate 11d and the instrument body 11, and is configured to be airtight for waterproofing and dustproofing. Further, a cover member 12 to be described later is fitted into the support step portion 11a1 of the appliance main body 11, the lighting device 30 is accommodated in the hollow portion 11c, and the street lamp 10 is inserted into the support hole 11b on the other end side. The tip of the installed pole P is inserted and supported by the bolt b1 so that it can be attached and detached.

  The cover member 12 constitutes the glove of the street light 10, and is a transparent or translucent member such as milky white, for example, a synthetic resin such as glass, acrylic or polycarbonate, and in this embodiment, transparent. The light transmission part 12a which makes | forms the spherical shape which made the inside hollow with an acrylic resin is comprised. In the present embodiment, the light transmitting portion 12a is configured to have a spherical shape around the entire circumference, that is, a shape that divides the sphere into two in the horizontal direction and forms a substantially divided hemisphere below.

  The cover member 12 has a circular opening 12b with a wide open top, a relatively small opening 12c is formed at the apex of the bottom, and the gap between the wide opening 12b and the small opening 12c is substantially the same. The light transmission part 12a is formed in a hemispherical shape. In addition, the wide opening 12b is formed with a cylindrical support ring 12b1 by extending the opening end integrally. A ring-shaped attachment portion 12c1 is integrally formed with the small opening 12c. And the attachment part 12c1 of the cover member 12 is mounted with respect to the ring-shaped support step part 11a1 of the instrument main body 11, and several places are supported so that attachment or detachment is possible by fixing means, such as a volt | bolt and a nut. .

  Further, the canopy 20 is covered and closed in the wide opening 12 b at the top of the cover member 12. The canopy 20 is formed integrally with a metal such as aluminum or stainless steel, in this embodiment in the shape of a dish made of aluminum, and the dish is placed on the support ring 12 b 1 of the wide opening 12 b of the cover member 12. It is supported so that it can be attached and detached by screwing a screw n2 into the outer peripheral surface of the support ring 12b1 of the cover member 12 from the surface.

  A packing S2 made of silicone rubber or the like is fitted between the outer peripheral surface of the support ring 12b1 and the inner peripheral surface of the canopy 20, and is configured to maintain waterproofness and dustproofness. The canopy 20 can inspect and repair the light emitting unit 13 and the lighting device 30 by removing the screw n2.

  As shown in FIG. 5, the light emitting unit 13 includes a solid light emitting element 13 a, and includes a light emitting module 13 b having a planar light emitting surface F on which the solid light emitting element is mounted. The solid-state light emitting element 13a is composed of a large number of LED chips 13a, and each LED chip is composed of an LED chip having the same performance, which is a high-intensity and high-output blue LED chip necessary for a street lamp in this embodiment. A large number of LED chips 13a are mounted on a wiring board 13c made of a flat plate, and further provided with a yellow phosphor 13d, thereby forming a COB-shaped light emitting module 13b having a substantially square shape that emits white light.

  The light emitting module 13b may be a light emitting module having an SMD planar light emitting surface. In addition, the wiring board 13c is formed of a member made of a metal, ceramics, or the like having a rectangular flat surface and a good thermal conductivity, and in this embodiment, a thin flat plate made of ceramics. The wiring board 13c may be made of a nonmetallic member such as a glass epoxy material.

  In the light emitting module 13b having the planar light emitting surface F configured as described above, the wiring substrate 13c is overlaid on a member made of metal, ceramics or the like having good thermal conductivity, in this embodiment, the substrate 14 made of aluminum. And is fixed by fixing means such as screws. Further, the light emitting module 13 b supported by the substrate 14 is supported by the support substrate 15. The support substrate 15 is composed of a steel plate having light reflectivity and thermal conductivity, a metal such as stainless steel and aluminum, and an aluminum plate having good reflectivity and thermal conductivity in this embodiment.

  As shown in FIG. 3, the support substrate 15 is formed in a thin shape having a flat plate shape with a trapezoidal shape, and is bent at a predetermined angle on the short side of one end (the lower end in FIG. 3). The mounting piece 15a is integrally formed and is located on the surface side on the short side of the other end (upper end in FIG. 3), and the light emitting module 13, that is, the light emitting module 13b having the planar light emitting surface F, is a substrate. It fixes by fixing means, such as a screw, through 14 (FIG. 2). At this time, an insulating sheet or an adhesive made of a silicone resin, an epoxy resin, or the like having electrical insulation and thermal conductivity is interposed between the substrate 14 of the light emitting module 13b and the surface of the support substrate 15, and the light emitting module 13b. And the support substrate 15, that is, the instrument body 11 side is electrically insulated. Further, by screwing the screw, the back surface side of the substrate 14 is fixed in close contact with the surface of the support substrate 15.

  As described above, a plurality of trapezoidal support substrates 15 to which a light emitting module 13b having a planar light emitting surface F is attached, in this embodiment, ten are prepared, and the light source unit A for street lamps is prepared. Composed. The support substrate 15 constituting the ten light emitting units 13 can obtain light distribution characteristics over a wide range of the entire periphery of the irradiated surface, and the light emitted from the light emitting unit 13 can be transmitted through the cover member 12. In order to increase the light extraction efficiency during the operation, it is disposed in the cover member 12 and supported by the instrument body 11 as follows.

  That is, as shown in FIG. 4, the ten support substrates 15 are positioned on the imaginary line of the circle centering on the center o of the sphere of the cover member 12, and both the support substrates 15 that form the trapezoid are inclined. The side edges 15b are arranged so as to be adjacent to each other without a gap. Specifically, the short side of one end portion of the support substrate 15, that is, the attachment piece 15a is located on the virtual line cc of the circle having a small diameter, and the virtual line c'-c 'having a large diameter is located. On the other hand, it arrange | positions so that the short side of the other end part of the support substrate 15, ie, the light emitting module 13b side, may be located.

  And in the state arrange | positioned above, the attachment piece 15a which the support substrate 15 inclines is fixed to a flat light source support part 11d3 of the attachment plate 11d by the side of the instrument main body 11 by means, such as a screw or spot welding. Further, the short side of the support substrate 15 to which the light emitting module 13b is fixed is similarly attached to the ring-shaped mounting plate 11d ′ by means of a mounting piece 15a ′ that is integrally inclined, and means such as screws or spot welding. (Fig. 3).

  Thus, the ten support substrates 15 are fixed so as to form a ring shape along the imaginary line of the circle, each inclined at a predetermined angle by the mounting piece 15a. That is, as shown in FIG. 3, the light emitting portion 13, that is, the short side where the light emitting module 13 b of the support substrate 15 is fixed is inclined so as to approach the outside, that is, the inner surface side of the spherical surface of the light transmitting portion 12 a in the cover member 12. Fixed. Thereby, the light source unit A for street lamps in which the ten support substrates 15 to which the light emitting units 13 are attached are arranged symmetrically with respect to the axis vv of the appliance is configured.

  As shown in FIG. 6, the inclination angle α1 formed by the line ff passing through the light emitting surface F of the light emitting unit in the light source unit A and the horizontal line hh of the light source supporting unit 11d2 is about The angle was about 63 ° in the range of 0 ° to 80 °. Thereby, the optical axis xx of the planar light emitting surface F having the LED 13a is inclined downward with respect to the vertical line yy at an angle of about 0 ° to 80 °, in this embodiment, an angle of about 63 °. Are disposed in the cover member 12 (angle α2 in FIG. 6 is 27 °). If the angle α1 is less than 0 °, it is difficult to emit light far away, and if the angle α1 exceeds 80 °, light near the pole is likely to be insufficient and dark. Considering these characteristics, the angle α1 is preferably in the range of 62 ° to 65 °. However, the present embodiment can be used for various purposes such as a crime prevention light and a sidewalk light, and the angle is not limited.

 By arranging the light emitting unit 13 having the planar light emitting surface F at this angle so as to be inclined downward, the light a along the optical axis xx emitted from the light emitting unit 13 is emitted obliquely downward. It is possible to fly bright light along the optical axis to a farther distance, and to obtain a wide range of light distribution characteristics around the irradiated surface, that is, the entire street around the installed street lamp 10. It becomes possible.

  At the same time, as shown in FIG. 6, the light emitting section 13 is arranged so that the line ff passing through the surface formed by the planar light emitting surface F and the tangent line ee of the sphere of the cover member 12 are substantially parallel. Further, as shown in FIG. 7, a plurality of tangent lines ee of the cover member 12 substantially parallel to the line ff of the light emitting surface F are provided around the entire periphery of the cover member 12, 10 in this embodiment. It is arranged so that the tangent line ee of the book is located. In other words, ten light emitting portions 13 are arranged around the entire periphery of the cover member 12.

  As a result, it is possible to obtain light distribution characteristics over a wide range around the entire periphery of the installed street lamp 10. At the same time, the ten support substrates 15 are radially arranged from the center o of the sphere at equal intervals on the circumference at an angle α3, in this embodiment, an angular interval of 36 °. That is, the light emitting portions 13 having the planar light emitting surface F are arranged substantially evenly on the entire circumference so as to face the spherical light transmitting portions 12 a around the entire periphery of the cover member 12, and each of the support substrates 15. The distance dimension l1 (FIG. 6) between the surface and the inner surface of the spherical surface of the light transmitting portion 12a is positioned and opposed so as to be substantially equally spaced over the entire circumference. As a result, it is possible to perform illumination with substantially uniform brightness over a wide area around the entire periphery.

  At the same time, since the LED chips 13a of the light emitting unit 13 are arranged at an angle of 36 ° over the entire circumference, the arrangement interval can be reduced, and one LED chip 13a can be reduced to 36 ° (one side of the flat light emitting surface F). Can be illuminated at an angle of α3 / 2 = 18 °), and it is possible to reduce the brightness and darkness of the light applied to the inner surface of the cover member 12.

  By the way, when the arrangement interval of the LED chips is widened, the brightness and darkness of the light irradiated to the globe can be clearly seen, and it is easy to understand where the LED chips are. On the other hand, according to the present embodiment, the arrangement interval of the LED chips can be narrowed, the brightness of light is reduced, and it becomes difficult to know where the LED chips are, and the glare when directly looking is reduced. It is also possible to do.

  In addition, the LED chip 13a and the support substrate 15 are arranged so as to be symmetric with respect to the axis vv of the instrument, and the both sides 15b of the adjacent support substrate 15 are arranged without a gap. Thereby, since there is no gap between the adjacent support substrates 15, even if light reflected on the inner surface of the cover member 12 is generated, the support substrate is made of aluminum having a reflection function without entering the instrument through the gap. 15 is reflected on the surface 15 and can be radiated outward from the cover member 12, thereby reducing the optical loss and improving the instrument efficiency. In addition, it is preferable that the gap between the both sides 15b of the adjacent support substrate 15 is not completely formed. However, due to a manufacturing error or the like, a gap of, for example, 5 mm or less is formed. In short, what is necessary is that the amount of light entering the inside of the appliance through the gap is reduced and the efficiency of the appliance can be substantially improved.

  Further, as shown in FIG. 6, the optical axis xx of the light emitting unit 13 is slightly from the line zz connecting the contact point p where the spherical surface of the light transmitting unit 12a and the tangent line ee intersect with the center o of the sphere. The light transmitting portion 12a is transmitted at a position shifted upward by the dimension t1. At this time, the dimension t1 is an extremely small dimension and can be substantially ignored, and the light a emitted from the light emitting part 13 is transmitted through the light transmitting part 12a having a spherical shape substantially orthogonally.

  As a result, the light a radiated from the LED chip 13a along the optical axis xx enters the light transmission portion 12a of the cover member 12 at a substantially right angle, and the incident light is hardly reflected. The cover member 12, that is, the transparent globe is efficiently transmitted. Thereby, the globe transmittance by the incident angle of the light to the cover member 12 is improved, and it becomes possible to increase the light extraction efficiency when the light a emitted from the light emitting unit 13 passes through the cover member 12. A wide range of light distribution characteristics (Fig. 8 (b)) around the installed street lamp 10 can be efficiently obtained, and a wide range of bright illumination can be obtained with less light loss. It becomes possible to carry out efficiently. It is also possible to further improve the instrument efficiency.

  By combining these actions, the light a radiated from the light emitting unit 13 can be efficiently extracted, and uniform and bright illumination is performed over a wide range around the pole P where the street lamp 10 is installed. A street light 10 capable of efficiently obtaining a light distribution characteristic that can be obtained is configured.

  In addition, the light emitting module 13b attached to the surface side of each support substrate 15 has each support substrate 15 arranged symmetrically with respect to the axis vv of the instrument, so that the shaft portion is on the back side of each support substrate 15. In the formed space S (FIG. 3), each is connected in series by a lead wire, and the lead wire is provided in the cavity 11c of the instrument body through the electric wire insertion hole 11d1 of the mounting plate 11d. It is connected to the device 30 and power is supplied to each light emitting module 13b. In this embodiment, the external dimensions of the street light 10 are configured as follows (FIG. 2). The diameter dimension Φ1 is about 400 mm, and the height dimension H1 is about 405 mm.

  As described above, in the present embodiment, the support substrate 15 to which the light emitting module 13b is attached has a preferable shape for emitting light obliquely downward toward the entire periphery. The planar shape may be a triangular shape such as a triangle, a quadrangle or a rectangle, a polygonal shape such as a hexagon or an octagon, a circular shape or an oval shape, and the desired light distribution characteristics. All shapes to obtain are acceptable.

  The solid-state light-emitting element 13a of the light-emitting unit 13 is preferably composed of, for example, an LED chip made of a gallium nitride (GaN) -based semiconductor that emits blue light. Light emitting elements are acceptable. Moreover, although it was made to light-emit in white, according to the use of a lighting fixture, you may comprise red, blue, green, etc., and also combining various colors. Further, it may have a light control or color adjustment function.

  Further, although the single light emitting module 13b is configured to be attached to the support substrate 15, a plurality such as two may be attached along the longitudinal direction of the support substrate 15, or may be attached in two rows. It may be. The support substrate 15 is made of a reflective aluminum plate. However, in order to further improve the reflection performance, the support substrate 15 may be mirror-finished or may be made of mirror-finished glass or synthetic resin. .

  Next, the operation when the street light 10 configured as described above is used by being attached to a pole P installed in a park as shown in FIG. 8 will be described. First, as shown to Fig.8 (a), the front-end | tip part of the pole P is inserted and fixed with the volt | bolt b1 with respect to the support hole 11b of the instrument main body 11 which makes a holder. The installation height is about 3 to 10 m.

  As a result, the light source 13 having the planar light emitting surface F is disposed so that the angle α1 formed by the optical axis xx of the light emitting unit 13 and the vertical line yy is obliquely downward at an angle of about 63 °.

  When the street lamp 10 is turned on in the above-described state, the light a radiated from the LED chip 13a of each light emitting unit 13 is transmitted substantially orthogonally over the entire periphery of the transparent cover member 12, and the incident light is efficient. By passing through the cover member 12 well, along the optical axis xx direction of the LED chip 13a, that is, over a wide range of the entire periphery of the park, which is the irradiated surface, the light loss is reduced and evenly and efficiently. It can be illuminated to shine brightly.

  At this time, as described above, the tangent line ee of the cover member 12 parallel to the line ff of the light emitting surface F has a plurality of tangent lines ee on the entire periphery of the cover member 12, in this embodiment, ten tangent lines ee. The light emitting unit 13 is arranged so that ten pieces are located around the entire periphery of the cover member 12, and a wide range of light distribution characteristics around the installed street lamp 10 is obtained. It becomes possible.

  At the same time, since the ten support substrates 15 are arranged at equal intervals on the circumference at an angular interval of 36 °, illumination with substantially uniform brightness is performed over a wide range of the entire circumference. Is possible. Moreover, the brightness of the light irradiated to the inner surface of the cover member 12 can be reduced, it becomes difficult to know where the LED chip 13a is, and the glare when looking up at the street light 10 can be reduced.

  Further, since there is no gap between the adjacent support substrates 15, even if light reflected on the inner surface of the cover member 12 is generated, it is reflected by the surface of the support substrate 15 and radiates outward from the cover member 12. Can be illuminated more brightly. Combined with these actions, as shown in the light distribution diagram schematically shown in FIG. 8B, the light emitted from the light emitting unit 13 is efficiently extracted to improve the illumination rate, and the installed pole P It is possible to perform uniform and bright illumination over a wide area around the entire park including the central part of the park, including directly under the pole P, so that it is possible to reliably perform the illumination necessary as a street light.

  The light emitting module 13b is attached to an aluminum support substrate 15 having good thermal conductivity, and the support substrate 15 is supported by an attachment plate 11d that is also made of aluminum. The heat generated in the step is transmitted from the wiring substrate 13c made of ceramics having good thermal conductivity to the aluminum substrate 14, the aluminum support substrate 15, and the mounting plate 11d, and radiated into the space S of the cover member 12. Is done. The heat dissipated in the space S is dissipated to the outside from the aluminum canopy 20 and the cover member 12, and it is possible to suppress a rise in temperature when the LED is turned on and to suppress a decrease in luminous efficiency. This makes it possible to extend the service life. Further, the substrate 14 to which the light emitting module 13b is attached is fixed to the support substrate 15 and the support substrate 15 to the attachment plate 11d by being securely adhered to each other by screws, and heat generated from the LEDs. Can be effectively transmitted to the support substrate 15 and the mounting plate 11d made of aluminum to dissipate heat.

  Further, since the light emitting unit 13 is configured as a light emitting module 13b having a planar light emitting surface F, a necessary number of light emitting modules are appropriately selected and attached to the support substrate 15 to install a street light. It is also possible to perform illumination having a combined light distribution characteristic. For example, if it is a place where lighting on one side is not required, the light emitting modules arranged around the entire circumference omit one half of the light emitting module, or do not turn on the light, and block neighboring light by preventing light from traveling in unnecessary directions. It is possible to eliminate the risk of adversely affecting agricultural products in the fields and fields, and to provide a versatile street lamp that can be adapted to various installation locations. Moreover, you may make it comprise the lighting fixture match | combined with various functions not only by the number but combining the support substrate 15 of the various shapes mentioned above. Further, the light source unit A having various functions may be configured by combining the support substrates 15 having different configurations and shapes.

  Moreover, although the light emission part 13 was arrange | positioned so that it might face diagonally downward at the angle of 0 degree-80 degrees, and the angle of about 63 degrees in this embodiment, it may become an angle below 0 degree or 80 degrees or more. For example, a security light that intensively brightens the area directly below the pole at an angle of less than 0 °, or a projector function at an angle of 80 ° or more is also possible. It may be. Furthermore, it is also possible to provide a dimming control device in the lighting device 30, and select or turn on or off a plurality of light emitting units as appropriate, and perform illumination according to the conditions of the installation location such as buildings and environments around the road. Become. In addition, a toning control device can be provided to perform illumination with an illumination color that matches the situation of the installation location.

  Moreover, since LED which is a solid light emitting element is used as a light source, the lifetime of an instrument becomes long and it can be used for a long time without incurring maintenance costs such as lamp replacement. At the same time, illumination with a wide range of light distribution can be performed, and it is possible to widen the installation interval of street lamps, so that economical and wide range illumination can be performed. In addition, since an LED is used as the light source, it is not necessary to use a heavy ballast for a lighting device in conventional fluorescent lamps or HID lamps, and the overall fixture can be reduced in size and weight. This makes it easy to install and install it in a certain place.

  In the present embodiment, the heat generated from the LED chip 13a is transmitted from the support substrate 15 to the mounting plate 11d and radiated into the space S of the cover member 12. However, as shown in FIG. The packing member S1 provided between the mounting plate 11d and the instrument main body 11 is omitted, and the space portion S formed on the back side of each support substrate 15 is communicated with the pole P having a hollow inside. You may comprise. In this case, the light emitting module 13b is preferably sealed so as to be waterproof and dustproof with a transparent lens body or the like. The lighting device 30 may be provided in the pole P in order to smooth the flow of outside air. Alternatively, it may be provided in the space S.

  According to this configuration, as shown by a solid arrow in FIG. 9, outside air (including cold air in the vicinity of the ground) is introduced from inside the pipe of the pole P into the instrument body 11, and further enters the space S, By causing convection in the vicinity of the mounting plate 11d on which the support substrate 15 is supported, the aluminum support substrate 15 can be cooled, and the temperature rise of the LED chip 13a can be more effectively suppressed. . Further, by omitting the mounting plate 11d and the packing member S1 provided in the opening 11a of the instrument body 11, heat can be directly transmitted from the attachment plate 11d to the instrument body 11 made of aluminum die casting, and a metal pole It is also possible to transmit heat to the outside and release it to the outside air, and it is possible to more effectively suppress the temperature rise of the LED chip 13a.

  Moreover, in this embodiment, as shown to Fig.10 (a) (b), you may install a lighting fixture with respect to the pole P so that the axis line vv of a fixture may face a horizontal direction. Further, as shown in FIGS. 10C and 10D, the hemispherical cover member 12 is further formed into a half sphere in the vertical direction, and the axis vv of the instrument is horizontal with respect to the pole P. You may install so that it may face. Further, as shown in FIGS. 10E and 10F, the hemispherical cover member 12 is further formed into a ¼ sphere in the vertical direction, and the axis vv of the instrument is horizontal with respect to the pole P. You may install so that it may face. Further, as shown in FIGS. 10 (g) and 10 (h), a spherical cover member 12 may be installed at the tip of the pole P. In this case, the light source unit A to which the light emitting unit 13 is attached may be provided so as to be vertically symmetrical so that light is emitted from the entire circumferential surface of the sphere. Further, the cover member 12 does not have to have a spherical shape as a whole of the light transmission part 12a. As shown in FIG. 11, the cover member 12 has a range in which light passes through at least the optical axis xx of the light emitting part 13. The surface of the angle α4 may be spherical.

  Furthermore, in this embodiment, the lighting device 30 housed in the cavity 11c of the appliance body 11 may be provided separately from the appliance body by providing a dedicated control box or the like below the pole P, for example. . In the above embodiment, the lighting fixture is configured as an outdoor street light, but even if it is configured as a street light such as a crime prevention light, it is further used for indoor lighting that illuminates a wide space such as a gymnasium, factory, warehouse, etc. You may comprise a lighting fixture. When configured as an indoor lighting fixture, packing for waterproofing and dustproofing may be omitted. Furthermore, as lighting fixtures, ceiling-mounted, suspended, and wall-mounting types are permitted in houses and stores, etc., and they constitute large lighting fixtures for offices and other facilities / businesses. May be.

  9 to 11 showing modifications of the present embodiment, the same parts as those in FIGS. 1 to 8 are denoted by the same reference numerals, and detailed description thereof is omitted. The preferred embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and various design changes can be made without departing from the scope of the present invention.

10 Lighting equipment 11 Equipment body
11a opening
11b Support hole
11c cavity
11d Mounting plate
11d1 Insertion hole 12 Cover member 12a Light transmission part
12b opening
12c Opening 13 Light emitting part 13a Solid state light emitting device
20 Canopy
30 lighting device

Claims (2)

An instrument body having an opening on one end, a support hole integrally formed on the other end, and a cylindrical cavity inside ;
Wherein provided on the instrument body, and having a spherical shape of the light transmitting portion in which an opening is formed in the upper and lower, and a cover member having a Hisareru canopy above the opening;
A plurality of light emitting portions comprising solid state light emitting elements;
An insertion plate that has a disc shape and has an insertion hole that is opposed to the opening of the instrument body at the center, and that supports the light emitting unit so as to surround the insertion hole;
The lighting fixture characterized by comprising. The plurality of light emitting portions are electrically connected to a lighting device by inserting electrically connected lead wires into a cavity portion of the instrument body through an insertion hole of the mounting plate. Item 2. A lighting apparatus according to item 1.

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