JP2017073233A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminaire which has better construction workability.SOLUTION: A luminaire 10 includes: a lamp part 1 for holding a light source 1a; and a mounting member 2 connected to the lamp part 1. The mounting member 2 is mounted on an installed part 11. To one of the lamp part 1 and the mounting member 2, a shaft part 4 is provided, and to the other one of the lamp part 1 and the mounting member 2, a guide passage 5a for guiding the shaft part 4 is provided. The guide passage 5a is constituted so as to guide the shaft part 4 from an opening end 5aa for inserting the shaft part 4 to a terminal end position 5ab, along the direction orthogonal to the axial direction of the shaft part 4. The lamp part 1 and the mounting member 2 are constituted so as to be rotatable around the shaft part 4 when the shaft part 4 is in the middle of the guide passage 5a, and they are constituted so as to be unrotatable around the shaft part 4 when the shaft part 4 is in the terminal position 5ab.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a lighting fixture, and more particularly, to a lighting fixture capable of adjusting a light irradiation angle.

  The luminaire may have a structure in which a predetermined light irradiation angle can be adjusted depending on an installation place or the like.

  As this type of lighting apparatus, a structure including an arm member and a metal fitting is known (for example, Patent Document 1).

  In the lighting fixture of patent document 1, the metal fitting is being fixed to the lamp. The metal fitting is formed in a U-shaped cross section in which a holding plate is raised on both sides of the flat plate portion. The arm member is formed in a T shape including an arm portion and a columnar rotating portion orthogonal to the arm portion. The inner surface of the holding plate is in contact with the sliding surface of the rotating portion of the metal fitting and the arm member.

  In the luminaire of Patent Document 1, the metal member pivotally supports the arm member so as to be rotatable from both sides so that the irradiation angle of the irradiation light of the lamp can be adjusted.

JP 2007-122991 A

  By the way, in the lighting fixture, the structure excellent in construction workability | operativity is calculated | required, and only the structure of the above-mentioned lighting fixture is not enough, and the further improvement is calculated | required.

  The objective of this invention is providing the lighting fixture excellent in construction workability | operativity.

  The lighting fixture of this invention is provided with the lamp part and the attachment member. The lamp unit holds a light source. The attachment member is configured to be coupled to the lamp unit. The said attachment member is attached to a to-be-installed part. One of the lamp part and the attachment member is provided with a shaft part. The other of the lamp part and the mounting member is provided with a guide path for guiding the shaft part. The guide path is configured to guide the shaft portion from an opening end where the shaft portion is inserted to a terminal position where the shaft portion is received along a direction orthogonal to the axial direction of the shaft portion. The lamp portion and the mounting member are configured to be rotatable around the shaft portion when the shaft portion is in the middle of the guide path from the open end to the end position. The lamp part and the mounting member are configured to be non-rotatable around the shaft part when the shaft part is in the terminal position.

  The lighting fixture of the present invention can have a structure with better workability.

Drawing 1 is an exploded perspective view of the front side showing the lighting fixture of an embodiment. FIG. 2 is an exploded perspective view of the back side showing the lighting apparatus of the embodiment. Drawing 3 is a side view showing the lighting fixture of an embodiment. Drawing 4 is a side view explaining construction work of the lighting fixture of an embodiment. FIG. 5 is another side view, partly broken, showing the lighting apparatus of the embodiment.

  Below, the lighting fixture 10 of this embodiment is demonstrated with reference to FIG. 1 thru | or FIG. In the figure, the same reference numerals are assigned to the same members, and duplicate descriptions are omitted. The size and positional relationship of the members shown in each drawing may be exaggerated for clarity of explanation. In the following description, each element constituting the present embodiment may be configured such that a plurality of elements are constituted by one member and the plurality of elements are shared by one member, and the function of one member is plural. You may implement | achieve by sharing with a member.

  The lighting fixture 10 of this embodiment is provided with the lamp part 1 and the attachment member 2, as shown in FIG. The lamp unit 1 holds a light source 1a. The attachment member 2 is configured to be coupled to the lamp unit 1. The attachment member 2 is attached to the installation part 11. A shaft portion 4 is provided on one of the lamp portion 1 and the attachment member 2. In the drawing, an example in which a shaft portion 4 is provided on the mounting member 2 as one of the lamp unit 1 and the mounting member 2 is shown. On the other side of the lamp unit 1 and the mounting member 2, a guide path 5 a for guiding the shaft unit 4 is provided. In the figure, as the other of the lamp unit 1 and the attachment member 2, an example in which the lamp unit 1 includes a guide path 5a is shown. As shown in FIGS. 1 to 5, the guide path 5 a has a shaft portion extending from an opening end 5 aa into which the shaft portion 4 is inserted to a terminal position 5 ab that receives the shaft portion 4 along a direction orthogonal to the axial direction of the shaft portion 4. 4 is guided. The lamp unit 1 and the attachment member 2 are configured to be rotatable around the shaft portion 4 when the shaft portion 4 is in the middle of the guide path 5a from the opening end 5aa to the terminal position 5ab. The lamp unit 1 and the attachment member 2 are configured to be non-rotatable around the shaft portion 4 when the shaft portion 4 is at the terminal position 5ab.

  In the lighting fixture 10 of the present embodiment, the lamp unit 1 and the mounting member 2 are configured to be rotatable when the shaft portion 4 is in the middle of the guide path 5a, and when the shaft portion 4 is at the end position 5ab, With a configuration incapable of rotating around the portion 4, it is possible to obtain a structure with better workability.

  The lighting fixture 10 of this embodiment includes a coupling portion 3 in addition to the lamp portion 1 and the attachment member 2. The lamp unit 1 includes a lighting circuit unit 1b that turns on the light source 1a, an appliance body 1c that holds the light source 1a and the lighting circuit unit 1b, and a support 1d that supports the appliance body 1c.

  The light source 1a includes an LED (Light Emitting Diode), a mounting board, and an optical member 1aa. The LED has an LED chip, a package, and a sealing portion. The package has a recess. The package stores the LED chip in the recess. The sealing portion covers the LED chip in the recess of the package. For example, a blue LED chip can be used as the LED chip. The sealing part may contain a yellow phosphor. The yellow phosphor is excited by blue light emitted from the blue LED chip and emits yellow light. The LED can emit white light by mixing the blue light emitted from the blue LED chip and the yellow light emitted from the yellow phosphor.

  The mounting board has a long flat plate-like outer shape. The mounting substrate has a predetermined shape of wiring formed on the surface thereof. The wiring is formed so that a plurality of LEDs can be appropriately electrically connected. The plurality of LEDs are arranged in a matrix on the surface of the mounting substrate. The mounting board is configured to supply power to a plurality of LEDs. For example, a printed circuit board can be used as the mounting board. The mounting board is not limited to a printed board, and for example, a ceramic board, a metal base printed wiring board, or the like may be used. As the wiring material, for example, copper or copper alloy can be used.

  The optical member 1aa covers the mounting substrate on which the LEDs are mounted. The optical member 1aa is configured in a long plate shape. The optical member 1aa has translucency with respect to light emitted from the LED. The optical member 1aa includes a plurality of lens portions 1ab corresponding to each of the plurality of LEDs on a one-to-one basis. The lens portion 1ab has a dome-like outer shape having a hollow inside. The lens unit 1ab is configured to control the light distribution of the light emitted from the LED and realize a desired light distribution characteristic.

  The optical member 1aa is preferably configured to efficiently transmit the light emitted from the LED. The optical member 1aa can be formed of a light-transmitting material such as acrylic resin, polycarbonate resin, or glass. The optical member 1aa can be formed by injection molding, for example. The optical member 1aa may be formed by adding a diffusing material to a translucent material. The optical member 1aa may have a lens function, or may not have a lens function.

  In the lighting fixture 10 of the present embodiment, an LED is used as the light source 1a. However, the configuration is not limited to the configuration using an LED, and may be a configuration using an organic EL (Electro Luminesces) element or a discharge lamp.

  The lighting circuit unit 1b is configured to supply predetermined power to the light source 1a. As shown in FIG. 2, the lighting circuit unit 1 b includes an electronic component 1 ba and a power supply substrate 1 bb. Power supply substrate 1bb has a rectangular flat plate-like outer shape. For example, a printed wiring board can be used as the power supply substrate 1bb. A plurality of types of electronic components 1ba are mounted on the power supply substrate 1bb. The electronic component 1ba is used to configure various circuits constituting the lighting circuit unit 1b. Examples of the various circuits include a filter circuit, a step-up circuit, a step-down circuit, a main control circuit, a control power supply circuit, and a dimming control circuit. The lighting circuit unit 1b can be configured to include, for example, an input connector and an output connector in addition to various circuits. Examples of the electronic component 1ba include a transformer, a diode, a capacitor, a switching element, and a microcomputer. The input connector is electrically connected to an external power source. As the external power source, for example, a commercial AC power source can be used. The lighting circuit unit 1b is configured to be supplied with AC power and to output predetermined DC power.

  The instrument main body 1c includes a body 1ca, a panel 1cb, and a cover 1cc. The instrument main body 1c has three box-shaped bodies 1ca opened on one side. Each of the bodies 1ca has a rectangular and long outer shape in plan view. The instrument main body 1c is configured so that the three bodies 1ca are joined together in the short direction of the body 1ca. The bodies 1ca are formed with the same structure. The body 1ca is configured so that the light source 1a can be accommodated therein. As shown in FIG. 1, a panel 1cb is disposed on the body 1ca so as to close the opening of the concave portion that houses the light source 1a. The panel 1cb has translucency so as to transmit light from the light source 1a. The panel 1cb is configured to protect the light source 1a disposed inside the body 1ca from the outside. The panel 1cb can be formed of translucent glass or resin.

  The body 1ca is configured so that two mounting boards constituting the light source 1a can be arranged inside. The body 1ca has a lighting circuit portion 1b arranged on the back side opposite to the front side where the light source 1a is provided. The lighting circuit portion 1b is mechanically protected from the outside by the cover portion 1cc. The cover 1cc has a rectangular box-like outer shape with an opening formed on one surface. The cover portion 1cc is configured to accommodate the lighting circuit portion 1b. The cover portion 1cc is disposed so as to cover the lighting circuit portion 1b mounted on the body 1ca. As shown in FIG. 2, the cover 1cc is screwed to the body 1ca with fixing screws 1cd at four corners. The cover 1 cc can be formed by drawing a metal plate material.

  The body 1ca is provided with a through hole 1ck that penetrates in the thickness direction. The through hole 1ck is inserted with a power supply line for power supply that electrically connects the light source 1a and the lighting circuit portion 1b. The appliance main body 1c is configured to be supplied with power from the lighting circuit portion 1b to the light source 1a by a power supply line inserted through the through hole 1ck of the body 1ca.

  The body 1ca and the cover 1cc are made of a metal material. The body 1ca can be formed by bending a sheet metal. The body 1ca and the cover 1cc can be formed using, for example, a steel plate. The material of the body 1ca and the cover 1cc is not limited to a steel plate, and may be formed of a metal material such as aluminum, stainless steel, or copper alloy. The luminaire 10 can efficiently generate heat generated in the light source 1a and the lighting circuit portion 1b through the fixture body 1c by forming the body 1ca and the cover portion 1cc from a metal material, compared to the case where the luminaire fixture 10 is formed from a resin. It is easy to dissipate heat to the outside.

  The support 1d includes a rectangular parallelepiped box 1da and a plate-like extension piece 1db. The box 1da includes a box 1dc having an opening 1dk on one surface and a lid 1dd that closes the opening 1dk. The lid 1dd has an outer shape of a rectangular flat plate. The box 1da is a box body 1dc and a lid body 1dd, and has a rectangular parallelepiped outer shape with a hollow inside. The box 1da has a connection terminal 1de inside. The luminaire 10 is configured such that power from an external power source is fed to the lighting circuit unit 1b via the connection terminal 1de.

  The box body 1dc is provided with a shaft cylinder 1df on one side in a short direction of a peripheral portion where the rectangular opening 1dk is desired in the rear view. The lid body 1dd is provided with a pair of tubes 1dg along one side of a rectangle so as to sandwich the shaft cylinder 1df. The shaft tube 1df and the tube 1dg are configured such that the core rod 1dh can be inserted therethrough. The lid 1dd is attached to the box 1dc so as to be openable and closable around the core rod 1dh. The box body 1dc is provided with an extension piece 1db along the longitudinal direction on one end side in the longitudinal direction in the rear view. The box body 1dc is provided with a pair of extending pieces 1db facing each other in the lateral direction when viewed from the back. The extension piece 1db is provided so as to extend from the side surface in the longitudinal direction of the box 1dc to the side opposite to the opening 1dk. In the support 1d, a pair of extending pieces 1db are attached to the instrument main body 1c so as to sandwich the middle body 1ca among the three bodies 1ca. The distal end portion of the extending piece 1db is configured to be screwed to the instrument main body 1c by a holding screw 1m.

  The box body 1dc includes a curved portion 1ds having a curved surface that is curved so as to protrude from the side surface along the short side direction of the box body 1dc to the front surface side opposite to the opening 1dk. The protruding portion 1ds is formed so as to constitute a part of a cylinder. The projecting portion 1ds includes a side plate portion 1du so that both ends of the cylinder are closed. The box 1dc is provided with a side wall piece 1dt facing the side plate 1du so as to sandwich the curved portion 1ds. A groove portion 1dp is formed between the side plate portion 1du and the side wall piece 1dt. The projecting portion 1ds has an insertion hole 1dm that communicates with the inside of the box 1dc at the center of the curved surface. The insertion hole 1dm is formed in an oval shape along the curved surface. The projecting portion 1ds includes a first fitting portion 1dj on a curved surface. The first fitting portion 1dj has a plurality of first protrusions 1dr protruding from the curved surface along the curved surface of the curved portion 1ds. The 1st protrusion 1dr is formed so that it may extend in the axial direction of the protruding part 1ds which comprises a part of cylinder. 1st fitting part 1dj comprises the unevenness | corrugation by several 1st protrusion 1dr.

  The side wall pieces 1dt are provided at both ends in the axial direction of the projecting portion 1ds constituting a part of the cylinder. The side wall piece 1dt has a flat outer shape. The side wall piece 1dt is provided with a guide path 5a provided so as to be cut out from the end. The side wall piece 1dt is formed with an opening end 5aa of the guide path 5a on the side opposite to the opening 1dk of the box 1dc in a side view. In the side wall piece 1dt, the end position 5ab of the guide path 5a is formed on the opening 1dk side of the box 1dc in a side view. In other words, the lamp unit 1 includes the guide path 5a provided so as to be cut out on the side opposite to the light emission direction of the light source 1a. The guide paths 5a of the pair of side wall pieces 1dt are formed so that the respective shaft portions 4 can be inserted. The guide path 5 a is formed in a size slightly larger than the outer shape of the shaft portion 4 so that the shaft portion 4 can be guided. The guide path 5a is formed large so that the opening end 5aa is opened outward so that the shaft portion 4 can be easily inserted.

  The box 1da can be formed of a metal material. Box 1da can be formed by, for example, aluminum die casting. The box 1da is configured such that a power line from an external power source is inserted through the insertion hole 1dm and can be connected to the connection terminal 1de. The connection terminal 1de is electrically connected to the light source 1a via the lighting circuit portion 1b. The insertion hole 1dm may be inserted with not only a power supply power line but also a signal line. The lighting fixture 10 may be configured such that lighting of the light source 1a is controlled by a control signal transmitted from the outside through a signal line.

  The attachment member 2 has a fixed portion 2b and a placement portion 2c. The fixed part 2b has a cylindrical outer shape. The fixing portion 2b is formed with an insertion hole 2ab having an inner shape slightly larger than the outer shape of the column 11a so that the tip of the column 11a serving as the installation portion 11 can be inserted. For example, a pole having a cylindrical outer shape can be used as the support 11a. The fixing portion 2b is provided with three fixing holes 2bb at predetermined intervals along the cylindrical axial direction. As shown in FIG. 5, the fixing hole 2bb penetrates in the thickness direction of the fixing portion 2b. The fixing portion 2b is configured to be attached to the column 11a using the mounting screw 2a inserted into the fixing hole 2bb in a state where the tip of the column 11a is inserted.

  As shown in FIG. 2, the mounting portion 2 c includes a curved portion 2 ca that is formed so as to close one end of the fixed portion 2 b and a protruding portion 2 cb that projects from the curved portion 2 ca. The curved portion 2ca has a concave curved surface so as to constitute a part of a cylinder. The curved portion 2ca has a communication hole 2aa communicating with the cylindrical interior of the fixed portion 2b at the center. The curved portion 2ca includes a second fitting portion 2cd that can be fitted to the first fitting portion 1dj. 2nd fitting part 2cd is provided in two places along the axial direction of curved part 2ca which comprises some cylinders. 2nd fitting part 2cd is provided in two places along the periphery of the curved part 2ca which comprises a part of cylinder. In other words, the bending portion 2ca includes second fitting portions 2cd at four point-symmetric positions via the communication hole 2aa.

  The second fitting portion 2cd has a plurality of second protrusions 2ce protruding from the curved surface along the curved surface of the curved portion 2ca. The 2nd protrusion 2ce is formed so that it may extend in the axial direction of curved part 2ca which constitutes a part of cylinder. The 2nd fitting part 2cd has an unevenness | corrugation by several 2nd protrusion 2ce.

  The protruding portions 2cb are provided at both ends in the axial direction of the curved portion 2ca constituting a part of the cylinder. The protrusion 2cb has a flat outer shape. The protrusion 2cb is formed in an arc shape in a side view. The protruding portion 2cb is provided with a shaft portion 4 at the tip. The shaft portion 4 is formed by a boss that protrudes along the thickness direction of the protrusion 2cb. The pair of projecting portions 2cb project so that the shaft portions 4 are separated from each other. The shaft portion 4 is provided with a screw insertion hole 4aa. A female screw is formed in the screw insertion hole 4aa.

  The attachment member 2 is formed integrally with a fixed portion 2b and a placement portion 2c. The attachment member 2 can be formed of a metal material. The attachment member 2 can be formed by, for example, aluminum die casting.

  The coupling part 3 includes a coupling screw 3a and a washer 3b. The coupling screw 3 a constitutes a male screw that is fastened to a female screw provided on the inner surface of the screw insertion hole 4 aa along the axial direction of the shaft portion 4. The coupling screw 3a can be coupled to the lamp unit 1 and the mounting member 2 via the washer 3b by being fastened to the female screw of the screw insertion hole 4aa. The connection part 3 should just be the structure which can couple | bond the lamp part 1 and the attachment member 2, and is not restricted only to the structure provided with the coupling screw 3a and the washer 3b. The coupling portion 3 may have a configuration including a coupling screw 3 a and a nut in order to couple the lamp unit 1 and the attachment member 2.

  In other words, the lighting fixture 10 of the present embodiment includes the coupling portion 3 that couples the lamp portion 1 and the attachment member 2. The shaft portion 4 is a boss protruding from either the lamp portion 1 or the attachment member 2. When the boss is at the end position 5ab, the coupling portion 3 is configured to couple the lamp unit 1 and the attachment member 2 by being fixed to the boss.

  In addition, in the lighting fixture 10, the guide path 5a of the side wall piece 1dt and the shaft portion 4 of the protruding portion 2cb are provided, and the side wall piece 1dt of the lamp portion 1 is covered so as to cover the protruding portion 2cb of the mounting member 2. Thus, foreign matter such as dust can be prevented from entering between the lamp unit 1 and the mounting member 2. In the lighting fixture 10, it can also suppress that it becomes difficult to rotate centering on the axial part 4 because it can suppress that a foreign material approachs between the lamp part 1 and the attachment member 2. FIG.

  Next, the assembly process of the lighting fixture 10 of this embodiment is demonstrated easily.

  In the assembling process of the lighting fixture 10, the lamp portion 1 in which the light source 1a and the lighting circuit portion 1b are attached to the fixture main body 1c is prepared in advance. In the assembly process, the lamp unit 1 is coupled to the mounting member 2 at a predetermined rotation angle by the coupling unit 3 in advance. In the assembling process, the shaft portion 4 provided on the attachment member 2 is inserted from the opening end 5aa of the guide path 5a in the box 1da of the lamp unit 1 so as to guide the shaft portion 4 to the terminal position 5ab.

  When the shaft part 4 is at the terminal position 5ab, the lamp part 1 and the attachment member 2 are fitted to the first fitting part 1dj in the curved part 1ds and the second fitting part 2cd in the curved part 2ca. . The lamp part 1 and the attachment member 2 are made non-rotatable around the shaft part 4 by fitting the first fitting part 1dj and the second fitting part 2cd together. In the lighting device 10, the lamp unit 1 is obtained by tightening the coupling screw 3a coupled to the screw insertion hole 4aa of the shaft unit 4 in a state where the first fitting unit 1dj and the second fitting unit 2cd are fitted together. And the mounting member 2 are combined.

  In the assembly process, first, the tip 11aa of the column 11a protruding from the ground surface is inserted into the insertion hole 2ab of the mounting member 2 to which the lamp unit 1 is coupled, and is mounted using the mounting screw 2a. The attachment member 2 is fixed to the column 11a with attachment screws 2a.

  In the assembly process, the power line led out through the inside of the column 11 a is inserted into the insertion hole 1 dm of the lamp unit 1 from the communication hole 2 aa provided in the mounting member 2. In the assembly process, the lid 1dd of the box 1da is opened, and the power supply line inserted through the insertion hole 1dm is electrically connected to the connection terminal 1de in the box 1da.

  In the assembly process, after electrically connecting the power supply line and the connection terminal 1de, the lid 1dd is closed so as to close the opening 1dk of the box 1dc. In the luminaire 10, since the light source 1a is previously coupled to the mounting member 2 at a predetermined rotation angle, the light from the light source 1a can be emitted at a predetermined irradiation angle.

  Below, adjustment of the irradiation angle of the light source 1a in the lighting fixture 10 of this embodiment is demonstrated compared with the lighting fixture of a comparative example.

  For example, when the luminaire is used for a road lamp or a street lamp used outdoors, the lamp portion for holding the light source tends to be strong and heavy in order to have a highly durable structure. Therefore, as a comparative example, when a structure such as Patent Document 1 is used as a lighting fixture, the arm member corresponding to the mounting member cannot hold the lamp provided with the metal fitting corresponding to the lamp portion, and the light irradiation angle is set. It may not be maintained. Moreover, in the lighting fixture, in order to adjust the light irradiation angle, the lamp unit and the mounting member can be separated, and the bolt inserted into the lamp unit and the mounting member is tightened, and the lamp unit and the mounting member are screwed. A structure of another comparative example to be fixed may be considered.

  However, the luminaire is sometimes attached to the tip of a support column at a relatively high place, so that the construction work is difficult to perform. In the structure of the lighting fixture of another comparative example, in an environment where it is difficult to perform the construction work, if the bolt is removed and the rotation angle between the lamp unit and the mounting member is adjusted, the lamp unit is detached from the mounting member and falls. There is a fear.

  On the other hand, in the lighting fixture 10 of the present embodiment, the shaft portion 4 is arranged at a position in the middle of the guide path 5a in a state where the coupling between the lamp portion 1 and the mounting member 2 is loosened. The lamp part 1 and the attachment member 2 can be rotated around the axis.

  In the lighting fixture 10, even when the lamp unit 1 falls for some reason in a state where the shaft part 4 is in the middle of the guide path 5 a, the shaft part 4 is restricted so as to move along the guide path 5 a. Then, the movement of the shaft portion 4 finally stops at the end position 5ab. Further, in the lighting fixture 10, the first fitting portion 1 dj of the lamp unit 1 is fitted with the second fitting portion 2 cd of the mounting member 2. The lighting fixture 10 restricts the lamp unit 1 from rotating relative to the mounting member 2 around the axis of the shaft part 4 by fitting the first fitting part 1dj and the second fitting part 2cd together. . In the luminaire 10, the movement of the shaft portion 4 finally stops at the end position 5ab, and the first fitting portion 1dj and the second fitting portion 2cd are fitted together, whereby the lamp portion 1 is detached from the mounting member 2. Can be prevented from falling.

  Below, the construction operation | work which adjusts the irradiation angle of the light in the lighting fixture 10 is demonstrated in detail, referring FIG. 3 thru | or FIG. In the construction work, the luminaire 10 shown in FIG. 5 that finally intersects the column 11a at a predetermined angle from the state of the luminaire 10 shown in FIG. 3 orthogonal to the column 11a provided along the vertical direction. An example of adjusting the irradiation adjustment to the state will be described.

  In the construction work of the luminaire 10, the coupling screw 3a can be loosened so as to come out of the screw insertion hole 4aa of the shaft portion 4. In the construction work, the lamp unit 1 is lifted along the vertical direction so as to be separated from the mounting member 2 in a state where the coupling screw 3a is loosened. In the lamp part 1 and the attachment member 2, the shaft part 4 moves vertically upward along the guide path 5a, so that the first fitting part 1dj and the second fitting part 2cd are separated from each other. .

  Next, in the construction work, as shown in FIG. 4, since the shaft portion 4 is separated from the terminal position 5ab, the first fitting portion 1dj and the second fitting portion 2cd are separated. In the lighting device 10, the first fitting portion 1 dj and the second fitting portion 2 cd are separated from each other, whereby the unevenness formed by the first protrusion 1 dr of the first fitting portion 1 dj and the second fitting portion 2 cd The unevenness | corrugation comprised by 2nd protrusion 2ce leaves | separates. In the lighting fixture 10, the unevenness | corrugation comprised by the 1st protrusion 1dr of the 1st fitting part 1dj and the unevenness | corrugation comprised by the 2nd protrusion 2ce of the 2nd fitting part 2cd leave | separated, and the lamp | ramp part 1 Rotation around the axis of the shaft portion 4 with respect to the mounting member 2 becomes possible.

  In the construction work, after the shaft portion 4 is rotated about the axis of the shaft portion 4 with respect to the mounting member 2 of the lamp portion 1 at an appropriate rotational position in the middle of the guide path 5a from the opening end 5aa to the terminal position 5ab. Then, the shaft portion 4 is again arranged so as to contact the end position 5ab. In the lighting fixture 10, the lamp unit 1 is placed on the mounting member 2 when the shaft unit 4 is disposed at the end position 5 ab.

  In the construction work, the first fitting portion 1dj and the second fitting portion 2cd are brought into contact with each other by moving the shaft portion 4 along the guide path 5a and disposing it at the terminal position 5ab. In the lighting device 10, the first fitting portion 1 dj and the second fitting portion 2 cd come into contact with each other, whereby the unevenness formed by the first protrusion 1 dr of the first fitting portion 1 dj and the second fitting portion 2 cd. The projections and depressions formed by the second protrusions 2ce are fitted together. In the lighting fixture 10, the unevenness | corrugation comprised by the 1st protrusion 1dr of 1st fitting part 1dj and the unevenness | corrugation comprised by the 2nd protrusion 2ce of 2nd fitting part 2cd are fitted, The rotation of the shaft portion 4 around the axis relative to the mounting member 2 of the lamp portion 1 is restricted.

  When the lamp unit 1 is placed on the mounting member 2, the lamp unit 1 and the mounting member 2 are first fitted by the weight of the lamp unit 1 because the shaft unit 4 moves in the vertical direction along the guide path 5 a. The part 1dj and the second fitting part 2cd are in a fitted state.

  Next, in the construction work, the lamp unit 1 and the mounting member 2 are secured by tightening the coupling screw 3a in the screw insertion hole 4aa of the shaft part 4 so as to sandwich the side wall piece 1dt between the coupling screw 3a and the projecting part 2cb. Can be integrally coupled. The lighting fixture 10 is a lamp by tightening the coupling screw 3a serving as the coupling portion 3 in the screw insertion hole 4aa of the shaft portion 4 in a state where the first fitting portion 1dj and the second fitting portion 2cd are fitted. The part 1 and the attachment member 2 are combined.

  In the construction work, when adjusting the irradiation angle of the light with the rotation of the shaft portion 4 relative to the mounting member 2 of the lamp portion 1 being adjusted to an appropriate position, the position in the middle of the guide path 5a is removed due to the coupling screw 3a being removed. There is also a possibility that the lamp unit 1 may fall by mistake in the state where the shaft part 4 is present. In the construction work, even if the lamp unit 1 falls with the shaft part 4 in the middle of the guide path 5a, the shaft part 4 moves along the guide path 5a. Is placed on the placement portion 2 c of the mounting member 2. In the lighting fixture 10, when the protruding portion 1ds of the lamp unit 1 is placed on the mounting portion 2c of the mounting member 2, the first fitting portion 1dj and the second fitting portion 2cd are fitted together. In the construction work, the first fitting portion 1dj and the second fitting portion 2cd are fitted to each other, so that the rotation of the shaft portion 4 around the shaft 4 with respect to the mounting member 2 of the lamp portion 1 is also restricted.

  In the lighting fixture 10 of this embodiment, as long as the attachment member 2 can be attached to the installation part 11, it is not restricted only to the structure which uses a cylindrical pole for the installation part 11, but it utilizes for another structure suitably. Can do. The luminaire 10 has a structure that is provided with a shaft portion 4 in the lamp portion 1 and includes a guide path 5a that guides the shaft portion 4 to the mounting member 2, as in the present embodiment. can do.

DESCRIPTION OF SYMBOLS 1 Lamp part 1a Light source 2 Mounting member 3 Coupling part 4 Shaft part 5a Guideway 5aa Open end 5ab Termination position 10 Lighting fixture 11 Installation part

Claims (2)

A lamp unit that holds the light source, and an attachment member that is coupled to the lamp unit and attached to the installation unit,
Either one of the lamp part and the attachment member is provided with a shaft part, and the other of the lamp part and the attachment member is provided with a guide path for guiding the shaft part,
The guide path is configured to guide the shaft portion along a direction orthogonal to the axial direction of the shaft portion from an opening end where the shaft portion is inserted to a terminal position where the shaft portion is received,
The lamp part and the mounting member are rotatable around the shaft part when the shaft part is in the middle of the guide path from the opening end to the terminal position,
And when the said axial part exists in the said terminal position, it is comprised so that it cannot rotate centering | focusing on the said axial part, The lighting fixture characterized by the above-mentioned. A coupling portion coupling the lamp unit and the mounting member;
The shaft portion is a boss protruding from one of the lamp portion and the mounting member,
The said coupling | bond part is comprised so that the said lamp | ramp part and the said attachment member may be couple | bonded by being fixed to the said boss | hub when the said boss | hub exists in the said terminal position. The luminaire described.

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