JP2019192438A - Lighting device - Google Patents

Abstract

To provide a lighting device which inhibits dew condensation in a globe.SOLUTION: A lighting device 10 includes: a cylindrical device body 20; a light source part 30 housed in the device body 20; a translucent globe 40 covering one end part of the device body 20; and a translucent partition part which blocks movement of air from the device body 20 to the globe 40. The globe 40 has a cylindrical shape having a second bottom part 414. The partition part is the second bottom part 414 of the globe 40. Further, the second bottom part 414 has a diffusion part 418 which diffuses light.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a lighting fixture.

  Conventionally, pole-type lighting fixtures that are installed outdoors on the ground are known. For example, Patent Document 1 discloses a lighting fixture including a pole, a light source unit disposed in the pole, a transparent globe attached to the top of the pole, and a reflector disposed in the globe. Yes. According to this structure, indirect light is irradiated to the circumference | surroundings of a pole from a globe, when the light from a light source part reflects with a reflecting plate.

  Moreover, in patent document 1, it is set as the structure drained from a drain hole even if rainwater etc. penetrate | invade in a pole by providing a drain hole in the lower part of a pole.

Japanese Patent Laid-Open No. 4-137304

  However, in the technique of Patent Document 1, the inside and outside of the pole communicate with each other through a drain hole, and the pole and the glove communicate with each other. Therefore, when the outside air temperature is low, the air containing moisture flowing into the pole is As it is warmed up, it rises and flows into the glove. And the air containing the moisture which flowed in in the glove is cooled in the glove by the low outside air temperature, and there is a possibility of causing condensation on the inner surface of the glove. When condensation occurs on the transparent part of the globe, there is a problem that the appearance is impaired because the condensation is visible to the user.

  Then, this invention is made | formed in view of the said subject, and it aims at providing the lighting fixture which suppresses the dew condensation in a glove.

  The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described.

That is, the lighting fixture disclosed in this application is
A tubular instrument body;
A light source unit housed in the instrument body;
A translucent glove covering one end of the instrument body;
And a translucent partition that blocks movement of air from the instrument body to the globe.

In the lighting fixture disclosed in the present application,
The glove is a cylinder having a bottom,
It is preferable that the bottom part is the partition part.

In the lighting fixture disclosed in the present application,
The instrument body has a first threaded portion at the one end,
It is preferable that the globe has a second screw portion that is screwed into the first screw portion.

In the lighting fixture disclosed in the present application,
It is preferable that the partition part has a diffusion part that diffuses light.

In the lighting fixture disclosed in the present application,
It is preferable that the globe has a first reflecting portion that reflects light inside.

In the lighting fixture disclosed in the present application,
On the opposite side of the glove to the instrument body, the glove is covered with a cover that protrudes to the side of the glove,
It is preferable that the cover has a second reflecting portion that reflects light emitted from the globe on the instrument body side.

In the lighting fixture disclosed in the present application,
The glove has a third threaded portion on the opposite side to the instrument body,
It is preferable that the cover has a fourth screw portion that is screwed into the third screw portion.

  According to the lighting fixture of the present invention, it is possible to suppress dew condensation on the globe by including the translucent partitioning portion that blocks the movement of air from the fixture body to the globe.

It is a perspective view of the upper surface side of the lighting fixture which concerns on one Embodiment of this invention. It is a side view of the lighting fixture which concerns on one Embodiment of this invention. It is an AA cross-sectional enlarged view of FIG. It is a perspective view of the upper surface side which shows a glove | globe, a cover, and an attaching part. It is a perspective view of the lower surface side which shows a glove | globe, a cover, and an attaching part. It is a disassembled perspective view of the upper surface side which shows a glove | globe, a cover, and an attaching part. It is a disassembled perspective view of the lower surface side which shows a glove | globe, a cover, and an attaching part.

  The lighting fixture which concerns on embodiment of this invention is demonstrated using FIGS. 1-5. The luminaire 10 according to the present embodiment is a pole-type luminaire installed on the ground G outdoors, and is a so-called pole lamp. In the following description, the vertical direction in a state where the lighting fixture 10 is installed on the ground G is defined as the “vertical direction” of the lighting fixture 10, and the direction perpendicular to the vertical direction of the lighting fixture 10 is the “side direction” of the lighting fixture 10. Or, it is described as “radial direction”. Moreover, in description of this embodiment, let the state which looked at the lighting fixture 10 etc. from the side surface direction be a side view. A state in which the cross-sectional shape of the lighting fixture 10 or the like is viewed is taken as a cross-sectional view.

  1 is a perspective view of the upper surface side of the lighting fixture 10, FIG. 2 is a side view of the lighting fixture 10, and FIG. 3 is an enlarged cross-sectional view taken along the line AA of FIG. 4A is a top perspective view showing the globe 40, the cover 50, and the mounting portion 22, and FIG. 4B is a bottom perspective view showing the globe 40, the cover 50, and the mounting portion 22. As shown in FIG. 5A is an exploded perspective view of the upper surface side showing the globe 40, the cover 50, and the attachment portion 22, and FIG. 5B is an exploded perspective view of the lower surface side showing the globe 40, the cover 50, and the attachment portion 22.

  As shown in FIGS. 1 to 3, the lighting fixture 10 includes a fixture body 20, a light source unit 30, a globe 40, and a cover 50. The instrument body 20 is a cylindrical member that supports the light source unit 30 and the globe 40. In addition, the shape of the instrument main body 20 should just be a cylinder shape, for example, a square cylinder shape may be sufficient as it. Moreover, you may have a taper shape toward an upper direction or a downward direction.

  As shown in FIG. 3, the instrument body 20 includes a tube portion 21 and an attachment portion 22. The cylinder part 21 is a cylindrical member having a diameter that can accommodate the light source part 30. The length in the vertical direction of the tube portion 21 can be appropriately designed in accordance with the use environment in consideration of the portion embedded in the ground.

  Two holes 211 are formed on the side surface of the upper end portion of the cylindrical portion 21 at positions facing each other. The hole 211 is a hole through which a screw 225 for attaching the attachment portion 22 is inserted. As shown in FIGS. 1 and 2, two holes 212 are also formed on the side surface near the lower end of the cylindrical portion 21 at positions facing each other. The hole 212 is a hole through which the wiring (not shown) of the light source unit 30 is inserted. As shown in FIG. 2, the hole 212 is provided to be positioned below the ground G when the lighting apparatus 10 is installed. Thereby, the wiring which has come out from the hole 212 can be buried in the ground, and the wiring around the lighting fixture 10 can be hidden.

  The cylinder part 21 is designed in consideration of durability capable of supporting the light source part 30, the globe 40 and the cover 50 and weather resistance which can be installed outdoors. As a material which comprises the cylinder part 21, it can be set as metal materials, resin materials, or those combinations, such as aluminum, aluminum alloy, iron, and an iron alloy, for example. The cylinder portion 21 of the present embodiment is obtained by painting an aluminum molded product in black. Although the tube portion 21 of the present embodiment is painted black, it may be painted in other colors. Moreover, it is not always necessary to perform the coating, and for example, a film material or the like can be attached to the outer peripheral surface of the cylindrical portion 21.

  As shown in FIGS. 3 to 5, the attachment portion 22 is a member for attaching the light source portion 30 and the globe 40, and is provided at an upper end portion that is one end portion of the cylindrical portion 21. The attachment portion 22 is an annular member, and includes an annular portion 221 and a flange portion 222. The annular portion 221 is a substantially cylindrical portion, and the outer peripheral surface thereof is fitted to the inner peripheral surface of the upper end portion of the cylindrical portion 21. A first screw portion 223 that is screwed into the second screw portion 416 of the globe 40 is formed on the inner peripheral surface of the annular portion 221. In the present embodiment, the first screw portion 223 is a female screw. The first screw portion 223 only needs to be able to be screwed with the second screw portion 416, and may be, for example, a male screw formed on the outer peripheral surface of a portion protruding upward from the annular portion 221.

  Two screw holes 224 are formed on the side surface of the annular portion 221 at positions overlapping the two holes 211 of the cylindrical portion 21. The attachment portion 22 is fixed to the cylinder portion 21 by two screws 225 that are inserted into the holes 211 and screwed into the screw holes 224.

  The flange portion 222 is an annular portion that protrudes laterally from the upper end portion of the annular portion 221. The flange part 222 is supported by the upper end part of the cylinder part 21. Thereby, the attachment part 22 can be positioned at the upper end part of the cylinder part 21. The outer diameter of the flange portion 222 is formed to be equal to the outer diameter of the cylindrical portion 21. Thereby, the side surface of the flange part 222 and the side surface of the cylinder part 21 become the same, and the external appearance is improved.

  As a material constituting the attachment portion 22, the same material as the material constituting the cylinder portion 21 can be used, but the material constituting the cylinder portion 21 may not necessarily match. The attachment portion 22 of the present embodiment is obtained by painting an aluminum integrally molded product in black. Although the attachment portion 22 of the present embodiment is painted black, it is not always necessary to perform painting. For example, other colors may or may not be painted.

  As shown in FIG. 3, the light source unit 30 is a member that is accommodated in the instrument body 20 and emits light upward. The light source unit 30 includes a light source holding unit 31, a socket 32, a substrate 33, and an LED (Light Emitting Diode) bulb 34 as a light source. The light source holding portion 31 is a member that holds the socket 32 and is suspended by being fixed to the lower end portion of the attachment portion 22 with a screw (not shown). As a material constituting the light source holding part 31, the same material as the material constituting the cylinder part 21 can be used, but the material constituting the cylinder part 21 may not necessarily match. The light source holding part 31 of this embodiment is an aluminum sheet metal member.

  The substrate 33 is fixed to the lower end of the light source holding unit 31 with screws 331. A wiring (not shown) connected to an external power source is connected to the substrate 33. The socket 32 is mounted on the upper surface of the substrate 33. The LED bulb 34 is screwed into the socket 32 and fixed upward. Thereby, a current is supplied from the external power source to the LED bulb 34, and the LED bulb 34 emits light upward.

  In the present embodiment, the LED bulb 34 is used as the light source. However, the type of the light source is not particularly limited, and other light sources may be used. For example, a light emitting module on which a surface mount type or chip on board type LED element, an organic EL element or the like is mounted may be used.

  As shown in FIGS. 3 and 5, the globe 40 is a member that covers the upper end of the instrument body 20 and emits light to the surroundings. The globe 40 includes a bottomed cylindrical portion 41 and a first reflecting portion 42. As a material which comprises the bottomed cylindrical part 41, the material which has translucency is used, for example, transparent or milky white resin is used. The bottomed cylindrical portion 41 of the present embodiment is an integrally molded product of a transparent acrylic resin. The bottomed cylindrical portion 41 can contain additives, colorants, and the like that impart various functions. For example, an antioxidant, an ultraviolet absorber, a flame retardant, an antifouling agent and the like can be contained.

  The bottomed cylindrical part 41 includes a first cylinder part 411, a first bottom part 412 formed at the lower end of the first cylinder part 411, a second cylinder part 413 extending downward from the first bottom part 412, and a second cylinder. And a second bottom portion 414 that covers the bottom surface of the portion 413. The 1st cylinder part 411 is a cylindrical shape, and is a part which radiate | emits light around. The outer diameter of the first tube portion 411 is formed to be equal to the outer diameter of the instrument body 20. Thereby, the side surface of the 1st cylinder part 411 and the side surface of the instrument main body 20 become the same, and the external appearance is improved. A third screw portion 415 that is screwed into the fourth screw portion 54 of the cover 50 is formed on the outer peripheral surface of the upper end portion of the first tube portion 411. In the present embodiment, the third screw portion 415 is a male screw. The third screw portion 415 only needs to be able to be screwed with the fourth screw portion 54, and may be a female screw formed on the inner peripheral surface of the upper end portion of the first tube portion 411, for example. In addition, an annular groove 417 that supports the flange portion 422 of the first reflecting portion 42 is formed on the inner peripheral side of the upper end portion of the first cylindrical portion 411.

  The first bottom portion 412 is an annular portion extending radially inward from the lower end portion of the first tube portion 411, and is in close contact with the upper surface of the flange portion 222 of the attachment portion 22. The second cylindrical portion 413 is a cylindrical portion that extends downward from the inner edge portion of the first bottom portion 412. A second screw portion 416 that is screwed into the first screw portion 223 of the attachment portion 22 is formed on the outer peripheral surface of the first bottom portion 412. Thereby, in the assembly process of the lighting fixture 10, it can assemble easily by screwing the bottomed cylindrical part 41 to the fixture main body 20. FIG. In the present embodiment, the second screw portion 416 is a male screw. The second screw portion 416 only needs to be able to be screwed with the first screw portion 223. For example, a second cylindrical portion extending upward from the inner edge portion of the first bottom portion 412 is formed, and the second cylindrical portion is formed. The external thread formed in an outer peripheral surface may be sufficient.

  The second bottom portion 414 is a disk-shaped portion that covers the bottom surface of the second cylindrical portion 413 and extends in the radial direction. The second bottom 414 is an example of a translucent partition that blocks air movement from the instrument body 20 to the globe 40. Since the bottomed cylindrical portion 41 of the present embodiment is an integrally molded product, air from the instrument body 20 does not flow into the globe 40. Moreover, by making the bottomed cylindrical part 41 into an integrally molded product, the number of parts is reduced, the number of assembly steps can be reduced, and the cost can be reduced.

  The second bottom portion 414 is a portion that faces the LED bulb 34 and transmits light emitted from the LED 34 to guide it into the globe 40. The second bottom portion 414 is provided with a diffusion portion 418 that diffuses light in order to reduce glare. There is no particular limitation on the form of the diffusion portion 418, and various lenses and various surface treatments can be used. The diffusing portion 418 of the present embodiment is a diffusing lens made of fine irregularities formed on the upper surface of the second bottom portion 414.

  Further, the second bottom portion (partition portion) 414 of the present embodiment is disposed inside the instrument main body 21 (attachment portion 22) below the first tube portion 411. The second bottom part (partition part) 414 is disposed at a position closer to the light source part 30 than the first tube part 411 exposed from the instrument main body 21, and thus becomes a relatively high luminance part. Since the position of the 2nd bottom part (partition part) 414 of this embodiment is located in the inside of the instrument main body 21, it is hard to visually recognize a surface with high brightness | luminance from the outside, and is preferable.

  The first reflecting portion 42 is a substantially frustoconical reflector disposed inside the first cylindrical portion 411. The first reflection part 42 includes a reflection part 421 and a flange part 422. As a material which comprises the 1st reflection part 42, it can be set as metal materials, resin materials, or those combinations, such as aluminum, aluminum alloy, iron, and an iron alloy, for example. The first reflecting portion 42 of the present embodiment is obtained by painting an iron plate spatula drawn product in white.

  The reflection part 421 is a truncated cone-shaped part that expands upward. The lower surface of the reflection part 421 is a reflection surface that reflects light emitted from the light source part 30 toward the first tube part 411. Therefore, it is preferable that the lower surface of the reflecting portion 421 is subjected to processing such as white coating or mirror processing in order to easily reflect light. Note that the shape of the reflecting portion 421 is not particularly limited as long as the light emitted from the light source portion 30 can be reflected toward the first tube portion 411. The shape of the reflecting portion 421 is not particularly limited, and may be a curved shape such as a truncated pyramid shape or a paraboloid. There may be.

  Moreover, in the reflection part 421 of this embodiment, in order to irradiate the light radiate | emitted from the light source part 30 toward the perimeter side of the 1st cylinder part 411 of the globe 40, rotation centering on the optical axis of the light source part 30 is carried out. Although formed in a body shape, it is not limited to this. For example, you may form so that light may be reflected in the one side of the 1st cylinder part 411 of the globe 40, without forming the reflection part 421 in a rotating body shape.

  The flange portion 422 is an annular portion that protrudes laterally from the upper end portion of the reflecting portion 421. The flange portion 422 is supported in a state of being fitted in the groove portion 417 of the first tube portion 411. Thereby, the 1st reflection part 42 can be positioned in the upper end part of the 1st cylinder part 411. FIG.

  As described above, by arranging the first reflecting portion 42 inside the first tube portion 411, the light irradiated around the globe 40 becomes indirect light.

  The cover 50 is a member that covers the upper end portion of the globe 40 and reflects light emitted from the globe 40 to the surroundings. The cover 50 includes a disc part 51, an outer annular part 52, an inner annular part 53, a fourth screw part 54, and a second reflecting part 55. The disc portion 51 is a disc-shaped portion that covers the upper end portion of the globe 40 and projects sideways. The outer diameter of the disc part 51 is formed larger than the outer diameter of the first cylinder part 411 of the globe 40. In addition, there is no limitation in particular in the external shape of the disc part 51, An ellipse and a polygon may be sufficient.

  The outer annular portion 52 is an annular portion that protrudes downward from the outer edge portion of the disc portion 51. The inner annular portion 53 is an annular portion that is formed inside the outer annular portion 52 and protrudes downward from the lower surface of the disc portion 51. A fourth screw portion 54 that is screwed into the third screw portion 415 of the globe 40 is formed on the inner peripheral surface of the inner annular portion 53. When the fourth screw portion 54 is screwed into the third screw portion 415, the cover 50 presses the first reflecting portion 42 and is fixed to the globe 40. Further, in the assembly process of the lighting fixture 10, the cover 50 can be easily assembled by screwing it into the globe 40. In the present embodiment, the fourth screw portion 54 is a female screw. The fourth screw portion 54 only needs to be able to be screwed with the third screw portion 415, and may be a male screw formed on the outer peripheral surface of the inner annular portion 53, for example.

  The second reflecting portion 55 is a reflector formed between the outer annular portion 52 and the inner annular portion 53 on the lower surface of the disc portion 51. The second reflecting portion 55 is inclined so as to increase from the inner side to the outer side in the radial direction. Thereby, the emitted light from the globe 40 is reflected obliquely downward by the second reflecting portion 55. Therefore, the light reflected by the second reflecting portion 55 is applied to the ground G around the instrument body 20. The shape of the second reflecting portion 55 is not particularly limited, and may be a stepped step shape or the like in order to improve the light diffusibility.

  Examples of the material constituting the cover 50 include metal materials such as aluminum and aluminum alloys, iron and iron alloys, resin materials, and combinations thereof. The second reflecting portion 55 is preferably subjected to processing such as white coating or mirror finishing so as to easily reflect light. The cover 50 of the present embodiment is an integrally molded product of aluminum, and the second reflecting portion 55 is painted in white and the others are painted in black. In the cover 50 of the present embodiment, the portions other than the second reflecting portion 55 are painted black, but may be painted in other colors. Moreover, it is not always necessary to perform coating, and for example, a film material or the like can be attached to the surface of the cover 50. Further, the cover 50 may be formed by combining the disc portion 51 and the reflecting portion 55 separately without being integrally molded.

  According to such a lighting fixture 10, the light emitted from the LED bulb 34 passes through the second bottom portion 414 and enters the globe 40, is reflected by the first reflecting portion 42, and is reflected from the first tube portion 411. The light is emitted to the outside of 40 and irradiated around the lighting fixture 10. Further, a part of the light emitted from the first tube part 411 to the outside of the globe 40 is reflected by the second reflecting part 55 of the cover 50 and irradiated to the ground G around the lighting apparatus 10.

  According to the luminaire 10 described above, the LED bulb 34 generates heat, so that the air around the LED bulb 34 is warmed, and the warmed air rises in the tube portion 21, and reaches the second bottom portion 414 of the globe 40. To reach. The air that has reached the second bottom portion 414 is blocked by the second bottom portion 414 and convects in the cylindrical portion 21 without moving to the globe 40. Therefore, since warmed air does not flow into the globe 40, the temperature in the globe 40 hardly rises and the occurrence of condensation on the inner surface of the globe 40 is suppressed. Therefore, it is possible to prevent fogging, dirt, and mold from adhering to the inner surface of the globe 40 due to dew condensation that occurs in the first tube portion 411 of the globe 40, and it is possible to suppress the appearance of the lighting fixture 10 from being impaired.

  In addition, although the translucent partition part which interrupts | blocks the movement of the air from the instrument main body 20 to the globe 40 was made into the 2nd bottom part 414 of the globe 40 in said embodiment, it is not limited to this. For example, a light-transmitting disk-shaped member that covers the bottom surface of the annular portion 221 may be adhered to the lower end portion of the annular portion 221 of the attachment portion 22 as a partition portion by adhesion or the like. In this case, the second bottom portion 414 of the globe 40 may not be provided. As described above, the partition portion may be provided on the globe 40 or the instrument body 20.

  In addition, when replacing the LED bulb 34 in the luminaire 10 described above, the two screws 225 on the side surface of the cylindrical portion 21 are removed, and the cover 50, the globe 40, the mounting portion 22, and the light source portion 30 are integrated. The light source part 30 can be taken out from the cylindrical part 21 by pulling upward.

  Further, in the lighting fixture 10 described above, the optical axis direction that is the direction along the optical axis of the LED bulb 34 matches the vertical direction of the lighting fixture 10, and the optical axis matches the central axis of the fixture body 20. In addition, the form in which the optical axis direction does not coincide with the vertical direction of the lighting fixture 10 or the form in which the optical axis does not coincide with the center of the fixture body 20 may be employed.

  Moreover, in said lighting fixture 10, it is good also as a form which eliminated the 2nd reflection part 55. FIG. For example, the outer annular portion 52 and the second reflecting portion 55 can be eliminated, and the diameter of the disc portion 51 can be reduced to the inner annular portion 53. Further, the first reflection part 42 may be omitted in addition to the second reflection part 55. In this case, it is possible to irradiate light above the disc portion 51 by forming the reduced disc portion 51 with a translucent member.

DESCRIPTION OF SYMBOLS 10 Lighting fixture 20 Appliance main body 30 Light source part 40 Globe 42 1st reflection part 50 Cover 54 4th screw part 55 2nd reflection part 223 1st screw part 414 2nd bottom part (partition part)
415 Third screw part 416 Second screw part 418 Diffusion part

Claims (7)

A tubular instrument body;
A light source unit housed in the instrument body;
A translucent glove covering one end of the instrument body;
A lighting fixture comprising: a translucent partition that blocks movement of air from the fixture body to the globe. The glove is a cylinder having a bottom,
The lighting fixture according to claim 1, wherein the bottom portion is the partition portion. The instrument body has a first threaded portion at the one end,
The lighting device according to claim 1, wherein the globe has a second screw portion that is screwed into the first screw portion.   The said partition part is a lighting fixture as described in any one of Claims 1-3 which has a spreading | diffusion part which diffuses light.   The luminaire according to any one of claims 1 to 4, wherein the globe includes a first reflection portion that reflects light therein. On the opposite side of the glove to the instrument body, the glove is covered with a cover that protrudes to the side of the glove,
The said cover is a lighting fixture as described in any one of Claims 1-5 which has a 2nd reflection part which reflects the emitted light from the said glove | globe on the said instrument main body side. The glove has a third threaded portion on the opposite side to the instrument body,
The lighting device according to claim 6, wherein the cover has a fourth screw portion that is screwed into the third screw portion.

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