JP7061507B2 - lighting equipment - Google Patents

Description

The present invention relates to a lighting fixture.

Conventionally, pole-type lighting fixtures installed outdoors on the ground are known. For example, Patent Document 1 discloses a luminaire including a pole, a light source portion arranged in the pole, a transparent glove attached to the upper part of the pole, and a reflector arranged in the glove. There is. According to this configuration, the light from the light source unit is reflected by the reflector, so that the indirect light is irradiated from the glove to the periphery of the pole.

Further, in Patent Document 1, by providing a drain hole at the lower part of the pole, even if rainwater or the like enters the pole through the gap between the glove and the pole, the water is drained from the drain hole.

Japanese Unexamined Patent Publication No. 4-137304

However, in the technique of Patent Document 1, since the inside and outside of the pole are communicated with each other by the drain hole and the pole and the glove are also communicated with each other, when the outside air temperature is low, the air containing moisture flowing into the pole is the light source unit. It is warmed by and rises, and flows into the glove. The moist air that has flowed into the glove is cooled in the glove by a low outside air temperature, which may cause dew condensation on the inner surface of the glove. When dew condensation occurs on the transparent part of the glove, there is a problem that the aesthetic appearance is spoiled because the dew condensation is visible to the user.

Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to provide a lighting device that suppresses dew condensation on a glove.

The problem to be solved by the present invention is as described above, and next, the means for solving this problem will be described.

That is, the lighting fixture disclosed in the present application is
A cylindrical instrument body having a first screw on the inner peripheral surface of the upper end , and
The light source unit housed in the fixture body and
A glove that covers the upper end of the instrument body is provided.
The glove has an integrally molded translucent bottomed cylindrical portion.
The bottomed cylindrical portion includes a first cylinder portion that irradiates the surroundings with light from the light source portion, an annular first bottom portion that extends radially inward from the lower end portion of the first cylinder portion, and the said. A cylindrical second cylinder portion extending downward from the inner edge portion of the first bottom portion and a second cylinder portion extending radially so as to cover the bottom surface of the second cylinder portion to block the movement of air from the instrument body to the glove. Has 2 bottoms and
The second tubular portion has a second threaded portion screwed to the first threaded portion on the outer peripheral surface.
The second bottom portion has a diffusing portion that diffuses light .

In the luminaire disclosed in the present application
It is preferable that the glove has a first reflecting portion that reflects light inside.

In the luminaire disclosed in the present application
A cover that covers the glove and projects laterally to the glove is provided on the opposite side of the glove from the instrument body.
It is preferable that the cover has a second reflecting portion that reflects the light emitted from the glove on the device main body side.

In the luminaire disclosed in the present application
The glove has a third threaded portion on the opposite side of the instrument body.
The cover preferably has a fourth threaded portion that is screwed into the third threaded portion.

According to the lighting fixture of the present invention, by providing a translucent partition portion that blocks the movement of air from the fixture body to the glove, dew condensation on the glove can be suppressed.

It is a perspective view of the upper surface side of the luminaire 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. FIG. 2 is an enlarged cross-sectional view taken along the line AA of FIG. It is a perspective view of the upper surface side which shows a glove, a cover, and a mounting part. It is a perspective view of the lower surface side which shows a glove, a cover, and a mounting part. It is an exploded perspective view of the upper surface side which shows a glove, a cover, and a mounting part. It is an exploded perspective view of the lower surface side which shows a glove, a cover, and a mounting part.

The lighting equipment according to the embodiment of the present invention will be described with reference to FIGS. 1 to 5. The luminaire 10 according to the present embodiment is a pole-type luminaire installed outdoors on the ground G, and is a so-called pole lamp. In the following description, the vertical direction in which the luminaire 10 is installed on the ground G is referred to as the "vertical direction" of the luminaire 10, and the direction orthogonal to the vertical direction of the luminaire 10 is the "side direction" of the luminaire 10. Alternatively, it will be described as "diametrically". Further, in the description of the present embodiment, the state in which the lighting fixture 10 and the like are viewed from the side surface direction is referred to as a side view. The state in which the cross-sectional shape of the lighting fixture 10 or the like is viewed is referred to as a cross-sectional view.

1 is a perspective view of the upper surface side of the luminaire 10, FIG. 2 is a side view of the luminaire 10, and FIG. 3 is an enlarged cross-sectional view taken along the line AA of FIG. FIG. 4A is a perspective view of the upper surface side showing the glove 40, the cover 50, and the mounting portion 22, and FIG. 4B is a perspective view of the lower surface side showing the glove 40, the cover 50, and the mounting portion 22. FIG. 5A is an exploded perspective view of the upper surface showing the glove 40, the cover 50, and the mounting portion 22, and FIG. 5B is an exploded perspective view of the lower surface side showing the glove 40, the cover 50, and the mounting portion 22.

As shown in FIGS. 1 to 3, the lighting fixture 10 includes a fixture main body 20, a light source unit 30, a glove 40, and a cover 50. The instrument body 20 is a cylindrical member that supports the light source unit 30 and the glove 40. The shape of the instrument body 20 may be tubular, for example, square tubular. Further, it may have a tapered shape in the upward direction or the downward direction.

As shown in FIG. 3, the instrument main body 20 includes a tubular portion 21 and a mounting portion 22. The tubular portion 21 is a cylindrical member having a diameter capable of accommodating the light source portion 30. The length of the tubular portion 21 in the vertical direction can be appropriately designed according to the usage 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 tubular portion 21 at positions facing each other. The hole 211 is a hole through which a screw 225 for mounting the mounting portion 22 is inserted. As shown in FIGS. 1 and 2, two holes 212 are also formed at positions facing each other on the side surface near the lower end portion of the tubular portion 21. 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 so as to be located below the ground G when the lighting fixture 10 is installed. As a result, the wiring coming out of the hole 212 can be buried in the ground, and the wiring around the luminaire 10 can be hidden.

The tubular portion 21 is designed in consideration of durability capable of supporting the light source portion 30, the glove 40 and the cover 50, and weather resistance that can be installed outdoors. The material constituting the tubular portion 21 may be, for example, a metal material such as aluminum or an aluminum alloy, an iron or an iron alloy, a resin material, or a combination thereof. The tubular portion 21 of the present embodiment is an aluminum molded product painted in black. Although the tubular portion 21 of the present embodiment is painted black, it may be painted in another color. Further, it is not always necessary to paint, and for example, a film material or the like can be attached to the outer peripheral surface of the tubular portion 21.

As shown in FIGS. 3 to 5, the mounting portion 22 is a member for mounting the light source portion 30 and the glove 40, and is provided at the upper end portion which is one end portion of the tubular portion 21. The mounting portion 22 is an annular member and has an annular portion 221 and a flange portion 222. The annular portion 221 is a substantially cylindrical portion, and its outer peripheral surface is fitted to the inner peripheral surface of the upper end portion of the tubular portion 21. Further, a first screw portion 223 screwed to the second screw portion 416 of the glove 40 is formed on the inner peripheral surface of the annular portion 221. In the present embodiment, the first threaded portion 223 is a female thread. The first screw portion 223 may 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 with the two holes 211 of the tubular portion 21. The mounting portion 22 is fixed to the tubular 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 projects laterally from the upper end portion of the annular portion 221. The flange portion 222 is supported by the upper end portion of the tubular portion 21. As a result, the mounting portion 22 can be positioned at the upper end portion of the tubular portion 21. The outer diameter of the flange portion 222 is formed to be equal to the outer diameter of the tubular portion 21. As a result, the side surface of the flange portion 222 and the side surface of the tubular portion 21 become flush with each other, and the appearance is improved.

As the material constituting the mounting portion 22, the same material as the material constituting the tubular portion 21 can be used, but it does not necessarily have to match the material constituting the tubular portion 21. The mounting portion 22 of the present embodiment is an integrally molded aluminum product painted in black. Although the mounting portion 22 of the present embodiment is painted black, it is not always necessary to paint it. For example, it may or may not be painted in another color.

As shown in FIG. 3, the light source unit 30 is a member housed in the instrument main 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 mounting portion 22 with a screw (not shown). As the material constituting the light source holding portion 31, the same material as the material constituting the tubular portion 21 can be used, but it does not necessarily have to match the material constituting the tubular portion 21. The light source holding portion 31 of the present embodiment is an aluminum sheet metal member.

The substrate 33 is fixed to the lower end of the light source holding portion 31 with screws 331. Wiring (not shown) connected to an external power supply is connected to the board 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. As a result, a current is supplied from the external power source to the LED bulb 34, and the LED bulb 34 emits light upward.

Although the LED bulb 34 is used as the light source in this embodiment, the type of the light source is not particularly limited, and another light source may be used. For example, a light emitting module equipped with a surface mount type, chip-on-board type LED element, organic EL element, or the like may be used.

As shown in FIGS. 3 and 5, the glove 40 is a member that covers the upper end portion of the instrument main body 20 and emits light to the surroundings. The glove 40 includes a bottomed cylindrical portion 41 and a first reflecting portion 42. As the material constituting the bottomed cylindrical portion 41, a material having translucency is used, and for example, a 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, it can contain an antioxidant, an ultraviolet absorber, a flame retardant, an antifouling agent and the like.

The bottomed cylindrical portion 41 includes a first cylinder portion 411, a first bottom portion 412 formed at the lower end portion of the first cylinder portion 411, a second cylinder portion 413 extending downward from the first bottom portion 412, and a second cylinder portion. It has a second bottom portion 414 that covers the bottom surface of the portion 413. The first tubular portion 411 has a cylindrical shape and is a portion that emits light to the surroundings. The outer diameter of the first cylinder portion 411 is formed so as to be equal to the outer diameter of the instrument main body 20. As a result, the side surface of the first cylinder portion 411 and the side surface of the instrument main body 20 become flush with each other, and the aesthetic appearance of the appearance is improved. A third screw portion 415 screwed to the fourth screw portion 54 of the cover 50 is formed on the outer peripheral surface of the upper end portion of the first cylinder portion 411. In the present embodiment, the third threaded portion 415 is a male thread. The third screw portion 415 may be screwed with the fourth screw portion 54, and may be, for example, a female screw formed on the inner peripheral surface of the upper end portion of the first cylinder portion 411. Further, an annular groove portion 417 that supports the flange portion 422 of the first reflection portion 42 is formed on the inner peripheral side of the upper end portion of the first cylinder portion 411.

The first bottom portion 412 is an annular portion extending inward in the radial direction from the lower end portion of the first cylinder portion 411, and is in close contact with the upper surface of the flange portion 222 of the mounting portion 22. The second tubular portion 413 is a cylindrical portion extending downward from the inner edge portion of the first bottom portion 412. A second screw portion 416 screwed to the first screw portion 223 of the mounting portion 22 is formed on the outer peripheral surface of the first bottom portion 412. Thereby, in the assembling process of the lighting fixture 10, the bottomed cylindrical portion 41 can be easily assembled by screwing it into the fixture main body 20. In the present embodiment, the second threaded portion 416 is a male thread. The second threaded portion 416 may be screwed with the first threaded portion 223. For example, the second threaded portion 416 forms a cylindrical second tubular portion extending upward from the inner edge portion of the first bottom portion 412, and the second tubular portion thereof. It may be a male screw formed on the outer peripheral surface.

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

Further, the second bottom portion 414 is a portion facing the LED bulb 34, transmitting the light emitted from the LED 34 and guiding it into the glove 40. The second bottom portion 414 is provided with a diffusing portion 418 that diffuses light in order to reduce glare. The form of the diffuser 418 is not particularly limited, and various lenses and various surface treatments can be used. The diffusing portion 418 of the present embodiment is a diffusing lens formed 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 arranged inside the instrument main body 21 (mounting portion 22) below the first cylinder portion 411. Since the second bottom portion (partition portion) 414 is arranged at a position closer to the light source portion 30 than the first cylinder portion 411 exposed from the instrument main body 21, the second bottom portion (partition portion) 414 is a portion having relatively high brightness. Since the position of the second bottom portion (partition portion) 414 of the present embodiment is located inside the instrument main body 21, it is difficult to visually recognize the surface having high brightness from the outside, which is preferable.

The first reflecting portion 42 is a substantially truncated cone-shaped reflector arranged inside the first tubular portion 411. The first reflecting portion 42 has a reflecting portion 421 and a flange portion 422. The material constituting the first reflective portion 42 may be, for example, a metal material such as aluminum or an aluminum alloy, an iron or an iron alloy, a resin material, or a combination thereof. The first reflective portion 42 of the present embodiment is a white-painted iron plate spinning product.

The reflective portion 421 is a truncated cone-shaped portion that extends upward. The lower surface of the reflecting portion 421 is a reflecting surface that reflects the light emitted from the light source portion 30 toward the first cylinder portion 411. Therefore, it is preferable that the lower surface of the reflecting portion 421 is coated with white or the like or mirror-finished in order to easily reflect light. If the light emitted from the light source unit 30 can be reflected toward the first cylinder unit 411, the shape of the reflecting unit 421 is not particularly limited, and may be a pyramid-shaped table shape, a curved surface shape such as a paraboloid, or the like. There may be.

Further, in the reflection unit 421 of the present embodiment, in order to irradiate the light emitted from the light source unit 30 toward the entire circumference side of the first cylinder portion 411 of the glove 40, the rotation unit 30 rotates about the optical axis. It was formed into a body shape, but it is not limited to this. For example, instead of forming the reflecting portion 421 in the shape of a rotating body, the reflecting portion 421 may be formed so as to reflect light on one side of the first cylinder portion 411 of the glove 40.

The flange portion 422 is an annular portion that projects laterally from the upper end portion of the reflective portion 421. The flange portion 422 is supported in a state of being fitted in the groove portion 417 of the first cylinder portion 411. Thereby, the first reflecting portion 42 can be positioned at the upper end portion of the first cylinder portion 411.

By arranging the first reflecting portion 42 inside the first cylinder portion 411 in this way, the light radiated around the glove 40 becomes indirect light.

The cover 50 is a member that covers the upper end portion of the glove 40 and reflects the light emitted from the glove 40 to the surroundings. The cover 50 includes a disk portion 51, an outer annulus portion 52, an inner annulus portion 53, a fourth screw portion 54, and a second reflective portion 55. The disk portion 51 is a disk-shaped portion that covers the upper end portion of the glove 40 and projects laterally. The outer diameter of the disk portion 51 is formed to be larger than the outer diameter of the first cylinder portion 411 of the glove 40. The outer shape of the disk portion 51 is not particularly limited, and may be an ellipse or a polygon.

The outer annular portion 52 is an annular portion that projects downward from the outer edge portion of the disk portion 51. The inner annular portion 53 is an annular portion formed inside the outer annular portion 52 and projecting downward from the lower surface of the disc portion 51. On the inner peripheral surface of the inner annulus portion 53, a fourth screw portion 54 screwed to the third screw portion 415 of the glove 40 is formed. By screwing the fourth screw portion 54 into the third screw portion 415, the cover 50 presses the first reflection portion 42 and is fixed to the glove 40. Further, in the assembling process of the lighting fixture 10, the cover 50 can be easily assembled by screwing the cover 50 into the glove 40. In the present embodiment, the fourth threaded portion 54 is a female thread. The fourth screw portion 54 may be screwed with the third screw portion 415, and may be, for example, a male screw formed on the outer peripheral surface of the inner annular portion 53.

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 be higher from the inside to the outside in the radial direction. As a result, the light emitted from the glove 40 is reflected obliquely downward by the second reflecting portion 55. Therefore, the light reflected by the second reflecting unit 55 irradiates the ground G around the instrument main 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 diffusivity of light.

The material constituting the cover 50 may be, for example, a metal material such as aluminum or an aluminum alloy, an iron or an iron alloy, a resin material, or a combination thereof. It is preferable that the second reflecting portion 55 is coated with white or the like or mirror-finished in order to easily reflect light. The cover 50 of the present embodiment is an integrally molded product of aluminum, and the second reflective portion 55 is painted in white, and the other parts are painted in black. In the cover 50 of the present embodiment, the parts other than the second reflecting portion 55 are painted black, but they may be painted in other colors. Further, it is not always necessary to paint, 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 as a separate body without integrally molding the disk portion 51 and the reflective portion 55, and may be combined.

According to such a lighting fixture 10, the light emitted from the LED bulb 34 passes through the second bottom portion 414, enters the glove 40, is reflected by the first reflecting portion 42, and is reflected from the first cylinder portion 411 to the glove. It emits light to the outside of the 40 and illuminates the periphery of the luminaire 10. Further, a part of the light emitted from the first cylinder portion 411 to the outside of the glove 40 is reflected by the second reflecting portion 55 of the cover 50 and irradiates the ground G around the luminaire 10.

According to the above-mentioned lighting fixture 10, the heat generated by the LED bulb 34 warms the air around the LED bulb 34, and the warmed air rises in the cylinder portion 21 and reaches the second bottom portion 414 of the glove 40. To reach. The air that has reached the second bottom 414 is blocked by the second bottom 414 and convection in the cylinder 21 without moving to the glove 40. Therefore, since the warmed air does not flow into the glove 40, the temperature inside the glove 40 hardly rises, and the generation of dew condensation on the inner surface of the glove 40 is suppressed. Therefore, it is possible to prevent fogging, water stains, and mold from adhering to the inner surface of the glove 40 due to dew condensation generated on the first cylinder portion 411 of the glove 40, and it is possible to prevent the aesthetic appearance of the lighting fixture 10 from being spoiled.

In the above embodiment, the translucent partition portion that blocks the movement of air from the instrument main body 20 to the glove 40 is the second bottom portion 414 of the glove 40, but the present invention is not limited to this. For example, as a partition portion, a translucent disk-shaped member covering the bottom surface of the annular portion 221 may be adhered to the lower end portion of the annular portion 221 of the mounting portion 22 by adhesion or the like. In this case, the second bottom 414 of the glove 40 may not be present. As described above, the partition portion may be provided on the glove 40 or on the instrument main body 20.

Further, when replacing the LED bulb 34 in the above lighting fixture 10, the two screws 225 on the side surface of the tubular portion 21 are removed, and the cover 50, the glove 40, the mounting portion 22, and the light source portion 30 are integrated. The light source unit 30 can be taken out from the cylinder unit 21 by pulling out the light source unit 30 upward.

Further, in the above-mentioned lighting fixture 10, the optical axis direction, which is the direction along the optical axis of the LED bulb 34, coincides with the vertical direction of the lighting fixture 10, and the optical axis coincides with the central axis of the fixture main body 20. The optical axis direction may not coincide with the vertical direction of the lighting fixture 10, or the optical axis may not coincide with the center of the fixture main body 20.

Further, in the above-mentioned luminaire 10, the second reflecting portion 55 may be eliminated. For example, the outer annulus 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 annulus portion 53. Further, the first reflecting portion 42 may be eliminated in addition to the second reflecting portion 55. In this case, by forming the reduced disk portion 51 with a translucent member, it is possible to irradiate light above the disk portion 51.

10 Lighting equipment 20 Equipment body 30 Light source part 40 Gloves 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 3rd threaded part 416 2nd threaded part 418 Diffusing part

Claims (4)

A cylindrical instrument body having a first screw on the inner peripheral surface of the upper end , and
The light source unit housed in the fixture body and
A glove that covers the upper end of the instrument body is provided.
The glove has an integrally molded translucent bottomed cylindrical portion.
The bottomed cylindrical portion includes a first cylinder portion that irradiates the surroundings with light from the light source portion, an annular first bottom portion that extends radially inward from the lower end portion of the first cylinder portion, and the said. A cylindrical second cylinder portion extending downward from the inner edge portion of the first bottom portion and a second cylinder portion extending radially so as to cover the bottom surface of the second cylinder portion to block the movement of air from the instrument body to the glove. Has 2 bottoms and
The second tubular portion has a second threaded portion screwed to the first threaded portion on the outer peripheral surface.
The second bottom portion is a lighting fixture having a diffuser portion that diffuses light . The luminaire according to claim 1 , wherein the glove has a first reflecting portion that reflects light inside. A cover that covers the glove and projects laterally to the glove is provided on the opposite side of the glove from the instrument body.
The lighting device according to claim 1 or 2 , wherein the cover has a second reflecting portion that reflects light emitted from the glove on the device main body side. The glove has a third threaded portion on the opposite side of the instrument body.
The luminaire according to claim 3 , wherein the cover has a fourth screw portion that is screwed into the third screw portion.

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