JP2023140009A - Luminaire - Google Patents

Abstract

To provide a luminaire that can be made lightweight.SOLUTION: A luminaire A1 comprises: a light source unit for emitting illumination light; an appliance body 1 supporting the light source unit; a frame 3 comprising a window 300 through which the illumination light is passed, and attached to the appliance body 1; and an arm 4 rotatably holding the frame 3.SELECTED DRAWING: Figure 1

Description

Application filed for application of Article 30, Paragraph 2 of the Patent Act ・March 2022 Published in "Facility/Outdoor/Storage Lighting General Catalog 2022" ・March 2022 https:/ /www2. panasonic. biz/jp/ https://esctlg. panasonic. biz/iportal/CatalogSearch. Do? method=catalogSearchByAnyCategories&volumeID=PEWJ0001&categoryID=352920000&designID= https://esctlg. panasonic. biz/iportal/cv. Do? Published at c=6084230000&pg=1&v=PEWJ0001&d=activeOut

The present disclosure relates to a lighting fixture, and more particularly to a lighting fixture whose irradiation direction can be adjusted.

As a conventional example, a lighting fixture described in Patent Document 1 will be exemplified. The lighting fixture described in Patent Document 1 (hereinafter referred to as a conventional example) includes a fixture body, an arm, a light source board, and a power supply board. The arms rotatably support both sides of the instrument body. The light source board is arranged perpendicularly to the light irradiation direction within the instrument body, and has a light emitting element mounted thereon. The power source board is disposed within the appliance body in parallel to the light irradiation direction, and is provided with a power source circuit that supplies lighting power to the light emitting elements.

The arm has a substantially U-shaped cross section and includes a mounting portion and a pair of arm portions bent from both ends of the mounting portion. The distal ends of the arms on both sides are attached to both sides of the instrument body in the width direction with adjustment screws. The arm is installed at a predetermined installation location, and the angle of the instrument body, that is, the direction of light irradiation, can be adjusted by loosening the adjustment screw.

Japanese Patent Application Publication No. 2018-163786

In the conventional structure in which the arm is attached to the instrument body, it is necessary to ensure the mechanical strength of the instrument body, making it difficult to reduce the weight.

An object of the present disclosure is to provide a lighting fixture that can be reduced in weight.

A lighting fixture according to one aspect of the present disclosure includes: a light source unit that emits illumination light; a fixture body that supports the light source unit; and a frame that is attached to the fixture body and has a window through which the illumination light passes. and an arm rotatably holding the frame.

The lighting fixture of the present disclosure has the advantage of being lightweight.

FIG. 1 is a front perspective view of a lighting fixture according to an embodiment of the present disclosure. FIG. 2 is a perspective view of the lighting fixture seen from the rear. FIG. 3 is an exploded perspective view of the above lighting fixture. FIG. 4 is a front view of the same lighting fixture as above. FIG. 5 is a right side view of the lighting fixture same as above. FIG. 6 is a rear view of the above lighting fixture. FIG. 7 is a plan view of the above lighting fixture. FIG. 8 is a cross-sectional view of the main parts of the above lighting fixture.

A lighting fixture according to an embodiment of the present disclosure will be described in detail with reference to the drawings. However, each figure described in the following embodiments is a schematic diagram, and the respective ratios of the sizes and thicknesses of each component do not necessarily reflect the actual size ratios. Note that the configuration described in the embodiments below is only an example of the present disclosure. The present disclosure is not limited to the following embodiments, and various changes can be made depending on the design etc. as long as the effects of the present disclosure can be achieved.

(1) Overview The lighting fixture A1 according to the embodiment includes a light source unit 2 (light source section) that emits illumination light, a fixture body 1 that supports the light source unit 2, and a window 300 through which the illumination light passes. It includes a frame 3 that is attached to the main body 1 and an arm 4 that rotatably holds the frame 3 (see FIGS. 1 to 3).

In the lighting fixture A1 according to the embodiment, the arm 4 is attached to the frame 3 instead of the fixture body 1. Therefore, in the lighting fixture A1 according to the embodiment, there is no need to provide a portion (for example, a screw hole) for attaching the arm 4 in the fixture body 1, and therefore the fixture body 1 can be formed of a metal plate.

As a result, the lighting fixture A1 according to the embodiment can be made lighter compared to the case where the fixture body is formed of aluminum die-casting as in the conventional example. Furthermore, in the lighting fixture A1 according to the embodiment, for example, when the fixture main body 1 is formed by processing a pure aluminum plate material, it is possible to reduce the weight and improve heat dissipation.

(2) Details The lighting fixture A1 (hereinafter abbreviated as lighting fixture A1) according to the embodiment is used, for example, to irradiate an outdoor parking lot, a ground, etc. with illumination light. In the following description, unless otherwise specified, the vertical, longitudinal, and horizontal directions indicated by arrows in FIG. 1 are defined as the vertical, longitudinal, and horizontal directions of the lighting fixture A1.

The lighting fixture A1 includes a fixture body 1, a light source unit 2, a frame 3, an arm 4, a sealing member 5, a power supply unit 6, a power cable 7, a lens unit B1, and the like.

(2-1) Instrument Main Body The instrument main body 1 includes a housing section 10 that accommodates the power supply unit 6, and a flange section 11 that supports the light source unit 2 and lens unit B1 (see FIGS. 2 and 3).

The accommodating portion 10 is formed into a square box shape with an open front surface (see FIG. 3). A power supply unit 6 is attached to the inner bottom surface of the housing section 10. The power supply unit 6 includes, for example, a switching power supply circuit, and converts AC power supplied from the power system through the power cable 7 into DC power. The power cable 7 is pulled out to the rear of the housing part 10 from a hole penetrating the bottom of the housing part 10 (see FIGS. 2, 5, and 6). However, the power cable 7 is fixed to the outer bottom surface of the housing part 10 by a cable gland 14 (see FIG. 2). The cable gland 14 fixes the power cable 7 to the device main body 1 and seals the gap between the power cable 7 and the hole in the bottom of the accommodating part 10.

The flange portion 11 is formed in a rectangular frame shape when viewed from the front and back direction, and protrudes outward from the front end (opening end) of the housing portion 10 over the entire circumference. A protruding wall 13 that protrudes forward over the entire circumference is provided at the outer peripheral end of the flange portion 11 (see FIG. 3). Further, circular insertion holes 111 are provided at each of the four corners and the center of the four sides of the flange portion 11. Further, cylindrical female threaded portions 112 are provided at both ends of each of the four sides on the inner peripheral edge of the flange portion 11 (see FIGS. 2 and 3).

The accommodating portion 10, flange portion 11, and projecting wall 13 that constitute the instrument body 1 are integrally formed by drawing and bending a metal plate (for example, a pure aluminum plate).

(2-2) Light Source Unit The light source unit 2 includes an LED module 20 and a mounting plate 21 to which the LED module 20 is attached (see FIG. 3).

The LED module 20 includes a rectangular substrate 201 and a plurality of LEDs 200 mounted on the front surface of the substrate 201. Each of the plurality of LEDs 200 is a packaged white LED for illumination. The substrate 201 is, for example, a metal base substrate based on an aluminum plate. Since the substrate 201 is a metal base substrate, the heat generated by the plurality of LEDs 200 can be efficiently dissipated. Note that the plurality of LEDs 200 are mounted on the surface of the substrate 201 in a plurality of rows at substantially equal intervals along the vertical direction (vertical direction) and the horizontal direction (horizontal direction).

The mounting plate 21 is made of, for example, an aluminum plate and is formed into a rectangular flat plate shape. Note that the vertical (top and bottom) and horizontal (left and right) lengths of the mounting plate 21 are longer than the vertical and horizontal lengths of the substrate 201 of the LED module 20. Therefore, when the LED module 20 is screwed onto the front surface of the mounting plate 21, the peripheral portion of the mounting plate 21 protrudes around the LED module 20 (see FIG. 3). In addition, in the peripheral portion of the mounting plate 21 that protrudes around the LED module 20, one insertion hole is provided at both left and right ends of the upper and lower sides, respectively.

In the light source unit 2, the mounting screws 22, which are inserted one by one into a plurality of (four) insertion holes provided in the peripheral portion of the mounting plate 21, are screwed one by one into the four female threaded portions 112 of the flange portion 11. By doing so, it is screwed to the flange portion 11 (see FIG. 8).

(2-3) Frame The frame 3 includes a frame main body 30, a pair of attachment parts 31, and a protruding piece 32. Note that the frame body 30, the pair of attachment parts 31, and the protrusions 32 that constitute the frame 3 are integrally formed by punching and bending a metal plate (for example, a plate made of pure aluminum).

The frame body 30 includes an upper side plate 301 serving as an upper window frame, a lower side plate 302 serving as a lower window frame, a left side plate 303 serving as a left window frame, and a right side plate 304 serving as a right window frame. have. The upper side plate 301 and the lower side plate 302 are formed in the shape of a narrow band and are arranged so that the thickness direction is along the up-down direction. Further, the left side plate 303 and the right side plate 304 are formed in the shape of narrow strips, and are arranged so that the thickness direction runs along the left-right direction. The left and right ends of the upper plate 301 are connected to the upper ends of the left side plate 303 and the right side plate 304, and the left and right ends of the lower side plate 302 are connected to the lower ends of the left side plate 303 and the right side plate 304, respectively. Thus, the frame body 30 has a window 300 whose window frame is an upper side plate 301, a lower side plate 302, a left side plate 303, and a right side plate 304. Note that one hidden portion 33 is formed at each end of the upper plate 301 in the longitudinal direction (left and right direction) (see FIG. 7). These two hidden portions 33 are formed in a trapezoidal shape and protrude from the rear ends of both ends of the upper plate 301 in the longitudinal direction.

The protruding piece 32 is formed in a rectangular frame shape when viewed from the front and back direction, and protrudes toward the window 300 from the front ends of the upper side plate 301, the lower side plate 302, the left side plate 303, and the right side plate 304. One insertion hole 320 is provided at each of the four corners and the longitudinal center of each of the four sides of the projecting piece 32 (see FIG. 3).

The pair of attachment parts 31 are formed into a trapezoid shape, and are integrally formed with the frame body 30 so as to protrude rearward from the rear ends of the lower parts (portions below the center in the vertical direction) of the left side plate 303 and the right side plate 304, respectively. (See Figures 3 and 5). One nut 81 is fixed to the lower part of each of the pair of attachment parts 31 (see FIGS. 3 and 6). Each nut 81 is a caulking nut (also called a pierce nut or a rivet nut), and is caulked and fixed into a through hole provided in the mounting portion 31 .

(2-4) Arm The arm 4 includes a fixed part 40 and a pair of arm parts 41. The fixing part 40 and the pair of arm parts 41 are integrally formed by punching and bending a metal plate (for example, a pure aluminum plate).

The fixing portion 40 is formed into a trapezoidal flat plate shape (see FIG. 7). The fixing part 40 is provided with three circular mounting holes 400 arranged in a row. For example, anchor bolts embedded in a concrete pedestal or the like are inserted one by one into these three mounting holes 400, and a nut is tightened on each anchor bolt, thereby fixing the fixing part 40 to the object to be fixed (pedestal). be done.

The pair of arm portions 41 are formed into a substantially L-shape and protrude obliquely upward and rearward from a pair of oblique sides (sides corresponding to legs of a trapezoid) of the fixing portion 40 . One through hole 410 is provided in each of the distal end portions of the pair of arm portions 41 (see FIG. 3).

The arm 4 is attached to the frame 3 with two bolts 80. Specifically, the bolts 80 inserted into the insertion holes 410 of each arm part 41 are screwed into the nuts 81 fixed to each mounting part 31 of the frame 3, so that each arm part 41 rotates to each mounting part 31. (See Figures 4-7).

(2-5) Lens Unit The lens unit B1 includes a unit main body 90, a peripheral portion 91, and a plurality of lenses 92 (see FIG. 3). Note that the unit main body 90, the peripheral portion 91, and the plurality of lenses 92 are integrally formed of a synthetic resin material having translucency (for example, polycarbonate resin or acrylic resin).

The unit main body 90 is formed into a square tray shape. The outer bottom surface (front surface) of the unit main body 90 is a flat surface, and a plurality of lenses 92 are formed on the inner bottom surface of the unit main body 90. The plurality of lenses 92 correspond to the plurality of LEDs 200 of the LED module 20 on a one-to-one basis. That is, the light distribution of light emitted from each LED 200 is controlled by each lens 92 that corresponds one-to-one with each LED 200.

The peripheral edge part 91 protrudes from the peripheral edge of the unit main body 90 over the entire circumference. One semicircular screw insertion groove 910 is provided at the center in the left-right direction of both the upper and lower ends of the peripheral edge portion 91, and at the center in the vertical direction of both left and right ends of the peripheral edge portion 91 (see FIG. 3).

(2-6) Seal Member The seal member 5 is made of silicone rubber and is formed into a rectangular frame shape when viewed from the front and rear directions (see FIG. 3). However, the seal member 5 may be formed of an elastic material other than silicone rubber.

The seal member 5 has a first seal portion 51 and a second seal portion 52 (see FIG. 8). Both the first seal part 51 and the second seal part 52 are formed in a rectangular frame shape. The outer peripheral end of the first seal part 51 and the outer peripheral end of the second seal part 52 are connected by a connecting part 53 formed in a rectangular frame shape. That is, inside the seal member 5, a groove 54 that is surrounded by the first seal part 51, the second seal part 52, and the connecting part 53 and is open to the inner peripheral surface is formed over the entire circumference of the seal member 5 ( (See Figure 8).

Two ribs 55 are formed on the front and rear surfaces of the first seal portion 51 over the entire circumference (see FIG. 8). Similarly, two ribs 55 are formed on the front and rear surfaces of the second seal portion 52 over the entire circumference. Furthermore, one screw insertion groove 56 is provided at both ends and the center of the seal member 5 in the vertical and horizontal directions (see FIG. 3).

(2-7) Assembling the lighting fixture Next, the procedure for assembling the lighting fixture A1 will be explained. However, the assembly procedure described below is an example, and the order of some procedures may be changed.

First, a worker who performs the assembly work attaches the power supply unit 6 to the inner bottom surface of the accommodating portion 10 of the instrument main body 1, and then electrically connects the power cable 7 to the power supply unit 6. Then, the operator pulls the power cable 7 out of the housing part 10 from the hole penetrating the bottom of the housing part 10, and fixes the power cable 7 to the outer bottom surface of the housing part 10 using the cable gland 14.

Next, the operator inserts the mounting screws 22 one by one into the four insertion holes provided in the mounting plate 21 of the light source unit 2, and inserts these four mounting screws 22 into the four female threads of the flange portion 11. The light source unit 2 is screwed to the flange portion 11 by screwing them into the portions 112 one by one. Note that before screwing the light source unit 2 to the flange portion 11, the operator electrically connects the output wire drawn out from the power supply unit 6 to the connector mounted on the board 201 of the LED module 20. do.

Subsequently, the operator attaches the seal member 5 to the peripheral edge 91 of the unit body 90 by inserting the peripheral edge 91 into the groove 54 of the seal member 5 . Then, the operator places the lens unit B1 equipped with the seal member 5 on the front surface of the flange portion 11, and then covers the frame 3 over the seal member 5 from the front.

Then, the operator inserts one mounting bolt 34 from the front into each of the plurality (eight) insertion holes 320 of the projecting piece 32 and the plurality (eight) insertion holes 111 of the flange portion 11. The operator fixes the frame 3 to the flange part 11 of the instrument main body 1 by tightening two mounting nuts 35 onto each of the mounting bolts 34 inserted into each insertion hole 111 of the flange part 11 (see FIG. 8).

Finally, the operator inserts the bolts 80 one by one into the insertion holes 410 of the pair of arm parts 41, and screws the bolts 80 one by one into each nut 81 fixed to the pair of mounting parts 31. Attach arm 4 to frame 3.

The above procedure completes the assembly work of the lighting fixture A1.

(3) Advantages of the Embodiment As described above, the lighting fixture A1 has the arm 4 attached to the frame 3 attached to the fixture body 1. Therefore, the lighting fixture A1 does not require a hole through which a bolt for attaching the arm to the fixture body is inserted, compared to a conventional example in which the arm is attached to the fixture body. As a result, in the lighting fixture A1, the fixture body 1 can be formed by processing a metal plate instead of a die-cast fixture body, so that the fixture body 1 can be made lighter. Further, in the lighting fixture A1, by using a pure aluminum plate as the metal plate forming the fixture body 1, heat dissipation can be improved compared to a fixture body made of an aluminum alloy. Furthermore, in the lighting fixture A1, the thickness of the metal plate forming the arm 4 can be made thinner (thinner) due to the lighter weight of the fixture body 1, and manufacturing costs can be reduced by reducing material costs. I can do it.

In addition, in the lighting fixture A1, the tip portions of the pair of arm portions 41 of the arm 4 are rotatably attached to the pair of attachment portions 31 provided on the frame body 30 of the frame 3, so that the frame 3 and the arm 4 are rotatably attached. The strength of the joint portion can be improved. Furthermore, in the lighting fixture A1, the width of the pair of mounting portions 31 is made larger than the portion of the frame body 30 other than the pair of mounting portions 31, so that the frame 3 and the arm The strength of the joint portion 4 can be further improved.

Here, in the lighting fixture A1, the shaft of the bolt 80 that connects the frame 3 and the flange part 11 of the fixture body 1 projects from the rear surface of the flange part 11 (see FIG. 2). Therefore, the lighting fixture A1 is provided with hidden parts 33 that protrude from both ends of the upper plate 301 of the frame main body 30 in parallel with the fixture main body 1, and the shafts of the bolts 80 that protrude from the rear surface of the flange part 11 are hidden by the hidden parts 33. (See Figure 7). Thus, the lighting fixture A1 can improve its appearance by hiding the bolt 80 with the hidden portion 33.

By the way, when the lighting fixture A1 is installed with the irradiation direction facing upward, there is a possibility that the mounting bolt 34 and the mounting nut 35 may become loose and a part or all of the fixture body 1 may come off and fall off from the frame 3. . However, in the lighting fixture A1, some of the fastening members (bolts 80 and nuts 81) that fasten the frame 3 and the arm 4 are attached to the flange of the fixture main body 1 (the direction facing the window 300). 11) (see FIG. 6). Therefore, the lighting fixture A1 can prevent the fixture body 1 from falling due to the fixture body 1 coming off the frame 3 hitting the bolts 80 and nuts 81.

Furthermore, in order to protect the light source unit 2, the lighting fixture A1 further includes a light-transmitting panel (lens unit B1) that is transparent to illumination light and is disposed on the window 300. Note that the light-transmitting panel in the embodiment also functions as a light distribution control member that controls light distribution of the LED module 20. In other words, since the lighting fixture A1 has the protection functions of the light distribution control member and the light source unit 2 in one component (lens unit B1), the number of parts can be reduced to improve the workability of the assembly work. I can do it. In the lighting fixture A1, the peripheral portion of the mounting plate 21 and the peripheral edge portion 91 of the lens unit B1 are sandwiched between the projecting piece 32 and the flange portion 11 (see FIG. 8). Therefore, in the lighting fixture A1, the lens unit B1 can be attached to the fixture body 1 together with the frame 3, and the workability of the assembly work can be improved.

Furthermore, the lighting fixture A1 includes a housing section 10 in the fixture body 1, and houses a power supply unit 6 that supplies power to the light source unit 2 in the housing section 10 (see FIG. 3). Therefore, the lighting fixture A1 can reduce the installation space compared to the case where the power supply unit 6 is installed outside the fixture main body 1.

(4) Summary The lighting fixture (A1) according to the first aspect of the present disclosure includes a light source section (light source unit 2) that emits illumination light, a fixture body (1) that supports the light source section, and a lighting fixture through which the illumination light passes. The apparatus includes a frame (3) having a window (300) and attached to the instrument body (1), and an arm (4) rotatably holding the frame (3).

The lighting fixture (A1) according to the first aspect can be lighter in weight compared to a conventional example in which the fixture body is formed of aluminum die-casting.

The lighting fixture (A1) according to the second aspect of the present disclosure can be realized in combination with the first aspect. In the lighting fixture (A1) according to the second aspect, the frame (3) includes a frame body (30) serving as a window frame of the window (300), and a pair of attachment parts provided in a part of the frame body (30). (31) It is preferable to have the following. The arm (4) preferably has a fixing part (40) formed in a plate shape and fixed to the object to be fixed, and a pair of arm parts (41) protruding from both ends of the fixing part (40). . It is preferable that the tip portions of each of the pair of arm portions (41) are rotatably attached to the pair of attachment portions (31).

The lighting fixture (A1) according to the second aspect can improve the strength of the joint between the frame (3) and the arm (4).

The lighting fixture (A1) according to the third aspect of the present disclosure can be realized in combination with the second aspect. In the lighting fixture (A1) according to the third aspect, it is preferable that the pair of attachment portions (31) have a larger width dimension than the portion of the frame body (30) other than the pair of attachment portions (31).

The lighting fixture (A1) according to the third aspect can further improve the strength of the joint between the frame (3) and the arm (4) while suppressing the increase in size of the frame (3).

The lighting fixture (A1) according to the fourth aspect of the present disclosure can be realized in combination with the second or third aspect. In the lighting fixture (A1) according to the fourth aspect, it is preferable that the frame body (30) further includes a protruding piece (32) and a hidden part (33). The projecting piece (32) projects toward the window (300) and has a plurality of insertion holes (through which a plurality of screws (mounting bolts 34) for screwing the frame body (30) to the instrument body (1) are inserted. 320) is preferably provided. It is preferable that the hidden portion (33) protrudes from the frame body (30) in parallel with the instrument body (1) and hides the screw inserted into the insertion hole (320).

The lighting fixture (A1) according to the fourth aspect can improve the appearance by hiding the screws with the hidden portion (33).

The lighting fixture (A1) according to the fifth aspect of the present disclosure can be realized in combination with any one of the second to fourth aspects. The lighting fixture (A1) according to the fifth aspect further includes a pair of fastening members (bolts 80 and nuts 81) that rotatably attach the tip portions of the pair of arm portions (41) and the pair of attachment portions (31). It is preferable. It is preferable that a part of the pair of fastening members is hidden in the instrument body (1) when viewed from the direction facing the window (300).

The lighting fixture (A1) according to the fifth aspect can prevent the fixture body (1) from falling due to the fixture body (1) coming off the frame (3) hitting the fastening member.

The lighting fixture (A1) according to the sixth aspect of the present disclosure can be realized in combination with the fourth aspect. It is preferable that the lighting fixture (A1) according to the sixth aspect further includes a light-transmitting panel (lens unit B1) that has transparency to illumination light and is disposed in the window (300). Preferably, the instrument body (1) has a flange portion (11) facing the protrusion (32). It is preferable that a part of the light source part (peripheral part of the mounting plate 21) and a part of the light-transmitting panel (peripheral part 91) be sandwiched between the projecting piece (32) and the flange part (11).

In the lighting fixture (A1) according to the sixth aspect, the light-transmitting panel can be attached to the fixture body (1) together with the frame (3), and the workability of the assembly work can be improved.

The lighting fixture (A1) according to the seventh aspect of the present disclosure can be realized in combination with any one of the first to sixth aspects. It is preferable that the lighting fixture (A1) according to the seventh aspect further includes a power supply section (power supply unit 6) that supplies power to the light source section. It is preferable that the instrument main body (1) has a housing part (10) for housing a power supply part.

The lighting fixture (A1) according to the seventh aspect can reduce the installation space compared to the case where the power supply section is installed outside the fixture body (1).

A1 Lighting equipment B1 Lens unit (transparent panel)
1 Apparatus body 2 Light source unit (light source part)
3 Frame 4 Arm 6 Power supply unit (power supply section)
10 Accommodating part 11 Flange part 30 Frame main body 31 Mounting part 32 Projection piece 33 Hidden part 40 Fixing part 41 Arm part 80 Bolt (fastening member)
81 Nut (fastening member)
300 window 320 insertion hole

Claims (7)

a light source unit that emits illumination light;
a fixture body that supports the light source;
a frame attached to the appliance body and having a window through which the illumination light passes;
an arm rotatably holding the frame;
Equipped with
lighting equipment. The frame is
a frame body serving as a window frame of the window;
a pair of attachment parts provided in a part of the frame body;
has
The arm is
a fixing part formed in a plate shape and fixed to an object to be fixed;
a pair of arm parts protruding from both ends of the fixed part;
has
The tip portions of each of the pair of arm portions are rotatably attached to the pair of attachment portions,
The lighting fixture according to claim 1. The pair of attachment portions have a larger width than a portion of the frame body other than the pair of attachment portions;
The lighting fixture according to claim 2. The frame body is
a protruding piece that protrudes toward the window and is provided with a plurality of insertion holes into which a plurality of screws for screwing the frame body to the instrument body are inserted;
a hidden part that protrudes from the frame main body in parallel with the instrument main body and hides a screw to be inserted into the insertion hole;
further having,
The lighting fixture according to claim 2 or 3. further comprising a pair of fastening members rotatably attaching the tip portions of the pair of arm portions and the pair of attachment portions,
A portion of the pair of fastening members is hidden in the device main body when viewed from a direction facing the window.
The lighting fixture according to any one of claims 2-4. further comprising a translucent panel disposed in the window and having transparency to the illumination light;
The instrument main body has a flange portion facing the protrusion,
A part of the light source part and a part of the light-transmitting panel are sandwiched between the projecting piece and the flange part,
The lighting fixture according to claim 4. further comprising a power supply unit that supplies power to the light source unit,
The instrument main body has a housing section that houses the power supply section.
The lighting fixture according to any one of claims 1 to 6.

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