JP2014170621A - Pole type illuminating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pole type illuminating device which enables the entire light emitting section to emit light in a substantially uniform manner.SOLUTION: A pole type illuminating device 10 includes: a body 11; a cover member 12; a light source body 13; and a lighting device 18. The body 11 is formed by a cylindrical body. The cover member 12 is connected with one end opening 11a of the body and is formed by a cylindrical body which has light transmissivity and a pole shape. The light source body 13 includes: a light emitting diode 14; and a reflection body 15, which reflects light emitted from the light emitting diode from the one end opening of the body into the cover member, and is housed in the body. The lighting device 18 controls lighting of the light emitting diode.

Description

  Embodiments described herein relate generally to a pole-type lighting device having a pole-like light emitting unit.

  In recent years, large-scale shopping centers and the like have been installed with a lot of pole-shaped lighting devices in the form of long and long poles to guide the flow of people near the entrance, and this is a kind of monumental presence in shopping centers and the like. A lighting device is used.

JP 2011-081987 A JP 2011-171261 A

  This pole-shaped illuminating device has a diameter of about 15 cm, a height of about 3 m, and has a thin and long pole-shaped light-emitting portion of about 2/3 of the height, that is, about 2 m. An important issue is how to uniformly illuminate the entire light-emitting part so as to emit light uniformly.

  The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a pole-type illumination device capable of causing the entire light emitting unit to emit light substantially uniformly.

  The pole-type lighting device in the embodiment of the present invention includes a main body, a cover member, a light source body, and a lighting device. The main body is formed of a cylindrical body. The cover member is connected to one end opening of the main body, and is configured by a cylindrical body having translucency and forming a pole shape. The light source body includes a light emitting diode and a reflector that reflects light emitted from the light emitting diode toward the inside of the cover member from one end opening of the main body, and is housed in the main body. The lighting device controls lighting of the light emitting diode.

  ADVANTAGE OF THE INVENTION According to this invention, the pole-type illuminating device which can light-emit the whole light emission part substantially uniformly can be provided.

The perspective view which shows the pole-type illuminating device which is embodiment of this invention. Sectional drawing which similarly shows the connection part of the main body and cover member of a pole-type illuminating device. Sectional drawing which notches and shows a part of light source body of a pole-shaped illuminating device similarly.

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

Embodiment 1

  This embodiment constitutes a pole illuminating device 10 installed outdoors. As shown in FIG. 1, a main body 11 made of a cylinder and a cylinder having a light-transmitting shape and having a pole shape. And a light source body 13 that has a light emitting diode and a reflector and is housed in the main body, a lighting device 18 that controls lighting of the light emitting diode, and the like.

  As shown in FIG. 2, the main body 11 is formed of a long cylindrical body made of steel with both ends open, and one end opening 11 a has a step portion 11 b and a connection portion 11 c formed in a step shape. The opening at the other end (downward in FIG. 1) is integrally formed, and is fixed to the steel base 11d by means such as welding. In FIG. 1, reference numeral 11 e denotes an inspection port provided below the main body 11, which is normally closed by the door 11 f and opened at the time of inspection or the like, and the light source body described later is housed in the main body 11. 13 and the lighting device 18 are inspected and repaired. The main body 11 in this embodiment is configured as an elongated cylindrical body having a diameter D1 (FIG. 2) of about 17 cm and a length L1 (FIG. 1) of about 1.2 m.

  The cover member 12 constitutes a light emitting part, and has a light-transmitting cylindrical body having a pole shape. In this embodiment, the cover member 12 is a milky white translucent polycarbonate resin and has a thin and long pole shape with both ends open. The steel cap member 12a is fitted into an opening at one end (upper in FIG. 1) so as to be waterproofed by packing or the like, and can be attached and detached by fixing means such as bolts. It is fixed to become. Note that the cover member 12 in the present embodiment is configured as a thin and long pole-shaped cylindrical body having a diameter D2 (FIG. 2) of about 15 cm and a length L2 (FIG. 1) of about 1.8 m.

  The main body 11 and the cover member 12 configured as described above are connected and coupled as follows. That is, as shown in FIG. 2, a strong synthetic resin connection member 20 is provided between the main body 11 and the cover member 12. This connecting member 20 is formed in a ring shape and a partition wall 20b having a transparent window 20a formed with a round hole is integrally formed in an intermediate portion inside, and a lower end opening portion thereof is connected to the connecting portion 11c of the main body 11. The opening 12b on the other end side of the cover member 12 is fitted into the inside of the upper end opening, and is engaged with the upper surface of the partition wall 20b. Thereby, the main body 11 and the cover member 12 are connected and connected. These connecting portions are waterproofed by packing or the like, and are fixed so as to be detachable by fixing means such as bolts. By this connection, the cylindrical body 11 and the cover member 12 are fixed so that the axial centers aa of the cover member 12 substantially coincide.

  As shown in FIG. 3, the light source body 13 is configured by unitizing a light emitting diode 14, a reflector 15, and a heat radiating body of the light emitting diode. In the present embodiment, a light emitting diode (hereinafter referred to as “LED”) is a high brightness and high output SMD (Surface Mount Device) type LED that emits white light, which is composed of one blue LED chip and a yellow phosphor. . The LED 14 transmits part of the blue light emitted from the blue LED chip to the yellow phosphor, converts the blue light into yellow light by the yellow phosphor, and the transmitted blue light and yellow light are mixed. As a result, white light is emitted.

  Since the LED 14 from which the white light is emitted is composed of one piece, it acts as a point light source, and light rays are mainly emitted in one direction of the LED 14, that is, the optical axis x of the LED. Here, the optical axis x is substantially perpendicular to the surface of the substrate 14a on which the LEDs 14 are mounted. The LED may be a small COB (Chip on Board) type LED constituted by a plurality of LED chips.

  The LED 14 configured as described above is mounted on the substrate 14a. The substrate 14a is made of a metal having good thermal conductivity, which is a thin aluminum plate having a substantially circular shape in this embodiment, and the surface (upper surface in FIG. 3) is provided with an electric insulating layer such as silicone resin. A wiring pattern made of copper foil or the like is formed, and one LED is mounted and disposed on the substantially central portion of the circular substrate 14a on the wiring pattern. In addition, an electrical insulating layer made of silicone resin or the like is formed on the back surface of the substrate 14a. In the present embodiment, the substrate 14a has a diameter of about 38 mm, and is configured to form a small light source body, in other words, a point light source, together with the LED 14.

  As described above, the LED 14 mounted on the substrate 14a is disposed on the base 14b. The base 14b is a heat radiating body that radiates heat generated from the LED 14 to the outside during lighting. The base 14b is a metal having a good thermal conductivity. It is made of aluminum in the form of a block with a large heat capacity.

  The substantially circular substrate 14a is a silicone resin that has thermal conductivity and electrical insulation with respect to the substantially circular substrate support portion 14b-2 having a back surface formed of a flat surface of the base 14b. It is closely attached via an insulating sheet or an adhesive made of epoxy resin or the like, and is supported by fixing means such as screws. Thereby, the light axis x of the LED 14 is disposed so as to substantially coincide with the longitudinal axis yy of the base body 14b, and is a light source as a point light source having a small light emitting surface that is substantially circular in plan view as a whole. Part A is configured (FIG. 3).

  As shown in FIG. 3, the reflector 15 has a function of reflecting the light emitted from the LED 14 so as to be concentrated along the optical axis x of the LED 14 by a narrow-angle light distribution so as to be substantially along. In the embodiment, the aluminum plate has a reflecting surface 15a made of a paraboloidal surface that is mirror-finished, a large emission opening 15b from which light is emitted at one end, and the light from the LED 14 is incident at the other end. It has a small incident aperture 15c, and is formed into a thin, substantially funnel shape as a whole. In FIG. 3, reference numeral 17 denotes a lid provided so as to cover the emission opening 15b. In this embodiment, the lid 17 is formed in a dish-like shape with a transparent acrylic resin, and is screwed into the opening end of the emission opening 15b. It attaches so that attachment or detachment is possible. In addition, packing etc. are provided in the opening end of the cover body 17 and the output opening 15b, and it attaches so that it may be waterproof.

  The reflector 15 in the present embodiment is configured so that the light distribution angle of full width at half maximum is a narrow angle of about 10 °. The light distribution angle of the full width at half maximum may be about 5 to about 20 °. When the light distribution angle exceeds about 20 °, the light diffuses and is reflected so as to be concentrated along the optical axis x of the target LED 14. It becomes difficult to let Further, if it is less than about 5 °, the shape must be formed so as to form a very thin funnel, the processing becomes difficult and impractical, and preferably about 8 ° to about 15 °.

  The reflector 15 configured as described above is supported by the support cover 16. The support cover 16 is an electrically insulating member, which is a transparent acrylic resin in this embodiment, and has a small circular support opening 16a for supporting the reflector 15 at one end and the support 16 at the other end. It has a large circular mounting opening 16b for supporting it on the base body 14b, and is formed in a reverse substantially funnel shape as a whole.

  The support cover 16 covers a large mounting opening 16b so as to cover the light source part A of the base 14b, and fixes the periphery of the mounting opening 16b with a fixing means such as a screw. Further, the small incident opening 15c of the reflector 15 is inserted and fitted into the small support opening 16a.

  At this time, the light source A, that is, the small light emitting surface composed of the LED 14 and the substrate 14a is completely covered by the incident aperture 15c of the reflector 15, in other words, the opening end of the incident aperture 15c is covered with the surface of the substrate 14a. Or it is made to adhere to the surface of substrate support part 14b-2. Thereby, the optical axis x of the LED 14 is disposed so as to substantially coincide with the axial center zz of the reflector 15, and the light source unit A as a point light source and the reflector 15 that forms a narrow-angle light distribution are combined. Thus, the light source body 13 is configured (FIG. 3).

  In addition, the contact portion between the support opening 16a of the support cover 16 and the outer surface of the reflector 15 is fixed with waterproofness by an adhesive such as silicone resin. Further, between the mounting opening 16b and the base body 14b, a packing or the like is interposed and fixed, and the mounting opening 16b and the base body 14b are mounted so as to be waterproof. Thereby, while charging parts, such as LED14, are covered with the support cover 16 which has electrical insulation, it hold | maintains so that it may become a watertight and airtight state, and the base | substrate 14b as LED14, the reflector 15, and a heat radiator is unitized. A small-sized light source body 13 is configured.

  The light source body 13 configured as described above is housed in the main body 11. That is, as shown in FIG. 2, in order to form the connection part 11c which has the step part 11b in the one end opening part 11a of the main body 11 comprised by the cylindrical body, the narrow internal space S formed inevitably is utilized. Then, the light source body 13 which is miniaturized and unitized is accommodated in the internal space S.

  The light source body 13 faces the one end opening portion 11a of the main body 11 so that the opening end of the emission opening 15b of the reflector 15 faces, that is, the opening end of the emission opening 15b faces the light transmitting window 20a of the connection member 20. In close contact with the inner surface of the partition wall 20b, in other words, the opening end of the emission opening 15b is stored in close contact with the one end opening 11a of the main body 11 without a gap. In addition, the diameter dimension of the light transmission window 20a formed of a round hole provided in the partition wall 20b is substantially equal to the diameter of the emission opening 15b of the reflector 15, or is formed so that the diameter dimension of the light transmission window 20a is slightly smaller. Has been.

  Thereby, the unitized light source body 13 is stored in the vicinity of the connection portion 11c with the cover member 12 in the main body 11, and the light of the LED 14 emitted from the emission opening 15b of the reflector 15 is lost without loss. It becomes possible to radiate toward the cover member 12 which is a light emitting part. At the same time, the light emitted from the LED 14 can be concentrated and reflected from the one end opening 11a of the main body 11 toward the longitudinal direction along the axis aa of the thin and long pole-shaped cover member 12.

  The light source body 13 is attached so that the outer peripheral portion of the base body 14b as a heat radiating body can be attached and detached to the inner peripheral surface of the main body 11 by a fixing means such as a bolt via a steel angle or the like. Thereby, the optical axis x of LED14 in the light source body 13 is comprised so that it may correspond with the axial center aa of the main body 11 and the cover member 12 which consist of a cylindrical body.

  The lighting device 18 controls the lighting of the LED 14 of the light source body 13, and is composed of an electronic component constituting the lighting circuit, a circuit board on which the electronic component is mounted, and the like. Is configured to supply a direct current. As shown in FIG. 2, the lighting device 18 is housed in the power supply case, and is disposed and housed below the light source body 13 in the main body 11. The lighting device 18 may be provided with a function of switching the correlated color temperature of the light emitted by the LED 14 to, for example, a light bulb color, a daylight color, a daylight white color, and the like, and a function of performing light control. Further, the lighting device 18 may be configured as a separate type without being housed in the main body 11.

  The pole type illumination device 10 is configured as described above. As shown in FIG. 1, the pole-type lighting device 10 of the present embodiment is configured as a lighting device having a thin and long pole shape with a height H1 of about 3 m, and a pedestal 11d is bolted to a concrete ground or the like. The power supply line w is connected by wiring.

  Next, the operation of the pole type illumination device 10 configured as described above will be described.

  When power is supplied to the pole-shaped illumination device 10 configured as described above, the lighting device 18 causes the LED 14 of the light source body 13 to emit white light. The light emitted from the LED 14 is taken into the reflector 15 from the entrance opening 15c of the reflector 15 having a narrow-angle light distribution, and is reflected toward the exit opening 15b by the reflecting surface 15a made of a paraboloid of revolution.

  The light emitted from the exit aperture 15b is distributed along the optical axis x of the LED 14, that is, the axis aa of the cover member 12 substantially coincident with the optical axis x by the narrow-angle light distribution of the reflector 15, and Radiation is emitted from the opening 12b on the other end side through the hollow interior toward the cap member 12a of the opening on the one end side.

  At this time, the light radiated from the LED 14 is strong in the straightness of the light, coupled with being mainly radiated to the optical axis x, and by the narrow-angle light distribution by the reflecting surface 15a made of a rotating paraboloid, the optical axis x By being converted into light concentrated along the axis aa of the cover member 12 that substantially coincides with the axis aa, the light is surely reached to the cap member 12a on one end side of the cover member 12 that forms a thin and long pole shape. And is emitted substantially uniformly toward the longitudinal direction of the inner surface of the cover member 12. As a result, illumination is performed so that the entire periphery of the cover member 12 serving as the light emitting portion extends in the vertical direction and shines brightly evenly in white.

  Further, as described above, since the light source body 13 is housed in the vicinity of the connection portion 11 c with the cover member 12 in the main body 11, the opening end of the emission opening 15 b is used as one end opening portion of the main body 11. 11a can be stored in close contact with the gap 11a, and the light emitted from the emission opening 15b of the reflector 15 can be emitted toward the cover member 12 as the light emitting unit without loss. It is possible to radiate without dropping the light, and it is possible to perform more uniform and bright illumination.

  Further, the heat generated by the LED 14 is transmitted from the aluminum substrate 14a to the aluminum base 14b, radiated from the heat radiation fins 14b-1 provided on the base 14b to the inside of the main body 11, and the radiated heat is It is transmitted to the steel body 11 and effectively radiated toward the outside. As a result, it is possible to prevent a decrease in the light emission efficiency of the LED and to extend the life of the LED. Similarly, the heat of the lighting device 18 is also radiated from the main body 11 to the outside, so that the temperature rise of the electronic component or the like can be prevented, and the reliability of the component can be improved.

  As described above, according to the present embodiment, the light source unit A of the light source body 13 is configured as a point light source having a small light emitting surface by the LED 14 and the reflector 15 has a narrow-angle light distribution. Can be made to function as a focal point on the paraboloid of revolution, and the light is more surely concentrated along the axis aa of the long pole-shaped cover member 12 and concentrated on the axis aa. It becomes possible to control and convert. In other words, according to the light source body 13 of the present embodiment, by configuring the light source with the LED 14, it is possible to configure an optimal light source body that can uniformly brighten a thin and long pole-shaped cover member. .

  Incidentally, in the case of a large surface light source instead of a point light source, for example, a reflex-type beam lamp with good condensing property, since it is a surface light source, it is used as a focal point on the rotating paraboloid of the reflector 15. The light cannot be controlled reliably. In addition, it is necessary to increase the incident aperture 15c of the reflector and to capture the light from the surface light source. As a result, the exit aperture 15b also increases, resulting in a problem that the entire reflector is enlarged and the entire apparatus is enlarged. .

  Further, when the light source body is composed of a beam lamp, the lamp becomes hot, and the beam lamp is disposed near the cover member 12 made of resin, that is, near the connection portion 11c between the main body 11 and the cover member 12. Can not do. For this reason, the beam lamp needs to be separated from the opening 12b on the other end side of the cover member 12. When the lamp is separated, the light is more diffused, and a part of the light cannot be taken into the opening 12b of the cover member 12, causing a light loss, and the light near the opening 12b on the other end side of the cover member 12 is insufficient. Thus, a dark part is easily formed at the lower part of the cover member 12. When the lamp power is increased to solve this problem, the lamp becomes higher in temperature, and the cover member made of resin is likely to be deteriorated, and the power consumption is increased. In addition, since it is necessary to store a large beam lamp, the light source body 13 cannot be stored using the narrow space S of the connecting portion 11c that is inevitably formed, and the entire apparatus becomes large. Problems also arise.

  There is also a means to control with a lens, but the light cannot be fully focused and a large lens with a diameter of about 15 cm is required, which causes an increase in cost. Furthermore, although there is a means using a light guide plate, a long light guide plate is required and the cost is significantly increased.

  On the other hand, in this embodiment, since the LED 14 capable of constituting a point light source is used as the light source, the light can be easily controlled, and the cover member 12 as the light emitting unit can surely emit light uniformly and brightly. Further, since the LED 14 does not reach a high temperature like a beam lamp, the light source body 13 can be disposed in the vicinity of the connection portion 11c with the cover member 12 in the main body 11, and reflected. The light of the LED 14 radiated from the exit opening 15b of the body 15 can be radiated toward the cover member 12 which is a light emitting unit without loss, and can be radiated without reducing the amount of light, and more uniform bright illumination It becomes possible to do. At the same time, it is possible to prevent a dark portion from being formed without a shortage of light in the vicinity of the opening 12b on the other end side of the cover member 12, and it is possible to perform brighter and uniform illumination. Furthermore, the present invention provides a pole-type lighting device that is advantageous in terms of cost, can be reduced in size, consumes less power, and does not require lamp replacement, and can easily change the correlated color temperature. It becomes possible.

  As mentioned above, in this embodiment, the light source body 13 arrange | positions the upper part of the reflector 15 in the internal space S formed in the connection part 11c of the main body 11, and is a connection part with the cover member 12 in the main body 11. FIG. The light source body 13 may be configured in a smaller size so that substantially the entire light source body 13 can be stored in the internal space S. In short, the light source body 13 It suffices that at least a part of the main body 11 is stored in the vicinity of the connection portion with the cover member 12.

  Further, the length of the cover member 12 serving as the light emitting portion is about 1.8 m, and about 3/5 of the total length of the device is about 3/5, but the light emitting portion is about 1/2 of the height H1 of the whole device. Even if the light-emitting portion having a length of about 1.5 m to about 2/3 (about 2 m), that is, the cover member 12 is configured, a pole-shaped illumination having substantially uniform brightness as described above. An apparatus can be provided. Preferably, the length is about 1.6 m to about 1.8 m.

  Although the main body 11 and the cover member 12 are configured as cylinders, the cross-sectional shape of the cylinder may be a rectangular shape such as a square or a rectangle, a polygonal shape such as a triangle or a hexagon, or an elliptical shape. .

  The substrate 14a on which the LED 14 is mounted is made of a metal having thermal conductivity and conductivity, which is aluminum in this embodiment, but may be made of glass epoxy resin, ceramics, or the like that has no conductivity. The substrate 12a is formed in a circular shape, but may be a polygonal shape such as a quadrangle or a hexagon, or an elliptical shape. Shape is acceptable.

  Further, in the present embodiment, the LED 14 is disposed on the substrate support portion 14b-2 of the base 14b via the substrate 14a. However, the substrate 14a is omitted, and the LED 14 is directly connected to the substrate support portion for electrical insulation. You may comprise so that it may support to 14b-2. According to this configuration, the heat generated from the LED 14 can be directly transmitted to the substrate support 14b-2, that is, the base body 14b, and a more effective heat dissipation operation can be performed. Further, the omission of the substrate 14a is further advantageous in terms of cost.

  The preferred embodiments of the present invention have been described above. However, the present invention is not limited to the above-described embodiments, and the scope of the present invention does not depart from the gist of the present invention, for example, applied to an indoor pole-type lighting device or the like. Inside, various design changes can be made.

DESCRIPTION OF SYMBOLS 10 Pole-type illuminating device 11 Main body 11a One end opening part 11c Connection part 12 Cover member 13 Light source body 14 Light emitting diode 15 Reflector 18 Lighting device

Claims (2)

A body composed of a cylinder;
A cover member connected to one end opening of the main body and configured by a cylindrical body having translucency and having a pole shape;
A light-emitting diode, and a light source body having a reflector that reflects light emitted from the light-emitting diode toward the inside of the cover member from one end opening of the main body;
A lighting device for controlling lighting of the light emitting diode;
A pole-type lighting device comprising: The pole-shaped illumination device according to claim 1, wherein the reflector has a narrow-angle light distribution, and the light source body is stored in the vicinity of a connection portion with a cover member in the main body.

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