JP5927534B2 - Light emitting device and lighting apparatus - Google Patents

Description

  The present invention relates to a light emitting device that includes a plurality of light emitting elements and is attached to another place, and a lighting fixture using the light emitting device.

Conventionally, a light-emitting device that includes a plurality of light-emitting elements and is attached to another place and a lighting fixture using the light-emitting device are known (for example, see Patent Document 1).
As shown in FIG. 12, a light emitting device 100 described in Patent Document 1 includes a circuit board 102 on which a plurality of LEDs 101 that are light emitting elements serving as a light source are mounted, and covers the circuit board 102 to collect light from the LEDs 101. The lens unit 103 is provided.
Furthermore, it has the heat sink 104 attached to the back surface of the circuit board 102 and being a part of the lighting fixture. The circuit board 102 is attached to the heat sink 104 with screws 105.

JP 2006-331817 A (FIG. 1)

However, in the light emitting device 100 described in Patent Document 1 described above, since the flat circuit board 102 is simply attached to the surface of the flat heat sink 104 with screws 105, the circuit board 102, the heat sink 104, May not be in close contact.
In such a case, the heat generated by the LED 101 cannot be sufficiently transmitted to the heat radiating plate 104 via the circuit board 102, and there is a problem that sufficient heat dissipation may not be obtained.

  The present invention has been made to solve the conventional problems, and an object of the present invention is to provide a light-emitting device and a lighting fixture that can sufficiently ensure the heat dissipation property that releases heat generated by an LED.

The light-emitting device of the present invention includes a pair of plate-like attachment bodies attached to other places and a pair of attachment bodies provided along the longitudinal direction at both ends of the attachment body in the width direction that is a direction orthogonal to the longitudinal direction. An attachment body having a U-shaped cross-section, and a mounting body that is in close contact with the attachment body body, and a plurality of light-emitting elements are mounted on the surface along the longitudinal direction and have a predetermined thickness. A circuit board having a thickness, and a cover that covers the light emitting element and the circuit board and is fixed to the mounting body with a screw so that the circuit board is in close contact with the mounting body body, The cover has a flat cover body disposed along the longitudinal direction of the mounting body main body, and the both ends of the cover body in the width direction of the mounting body main body, along the longitudinal direction of the mounting body main body. And provided A pair of standing walls provided with a groove portion into which the circuit board is fitted at an end portion on the attachment body side, an attachment portion having an attachment surface facing the attachment body body, and provided on the attachment body side of the cover body. And the depth of the groove portion of the cover is either smaller or larger than the predetermined thickness of the circuit board , and the depth of the groove portion of the cover is larger than the predetermined thickness of the circuit board. If yet small, in a state in which the circuit board is fitted in the groove of the cover, of the circuit board, the surface of the mounting body side, on the side of the mounting body from the mounting surface, It is in a state of projecting by the difference between the depth of the groove portion of the cover and the predetermined thickness of the circuit board, and the mounting body main body is flat, and the surface of the mounting body main body opposite to the other portion is Flat and the cover is attached In a state attached to said plane, a state where the pressed against the mounting body-side surface of the circuit board, larger than the predetermined thickness of the groove depth of said cover said circuit board If have, in a state where the circuit board is fitted in the groove of the cover, of the circuit board, the surface of the mounting body side than the mounting surface, the a depth of the groove of the cover a state are Nde only concave difference between a predetermined thickness of the circuit board, and the mounting body is a structure with a step having a portion projecting on the side of the cover, the cover is attached to the mounting member in the state where there, and the other places of the mounting body in the surface opposite to the plane at a portion protruding on the side of the cover, are pressed against the mounting body-side surface of the circuit board Is a state der shall it are.

Furthermore, the lighting fixture of the present invention accommodates a main light source and has a fixture main body having a circular outer shape in plan view, an annular frame provided along the outer periphery of the fixture main body, and attached to the frame. , those having a light emission device described above.

  In the present invention, since one surface of the back surface of the circuit board and the side surface of the circuit board of the mounting body projects to the other surface side with respect to the mounting surface of the mounting body and the cover, the circuit board and the mounting body Are in close contact with each other. For this reason, since the heat | fever which the light emitting element generate | occur | produced is reliably transmitted to a mounting body from a circuit board, the light-emitting device and lighting fixture which have the effect that heat dissipation can be ensured can be provided.

(A) is sectional drawing of the lighting fixture of 1st Embodiment which concerns on this invention, (B) is the bottom view seen from the downward direction The disassembled perspective view of the lighting fixture of 1st Embodiment which concerns on this invention Enlarged view of part III in FIG. (A) is the bottom view which looked at the frame from the lower part, (B) is sectional drawing of a BB position in (A). An exploded perspective view of the auxiliary light source as viewed from above An exploded perspective view of the auxiliary light source as seen from below Bottom view of the assembled auxiliary light source viewed from below (A) is sectional drawing which shows the state before attaching a circuit board to a cover, (B) is sectional drawing which shows the state which fitted the circuit board in the groove part of the cover. (A) is sectional drawing which shows the state before attaching a circuit board to a cover in the auxiliary light source of 2nd Embodiment, (B) is sectional drawing which shows the state which fitted the circuit board in the groove part of the cover. (A) is sectional drawing which shows the state before attaching a circuit board to a cover in the auxiliary light source of 3rd Embodiment, (B) is sectional drawing which shows the state which fitted the circuit board in the groove part of the cover. (A) is sectional drawing which shows the state before attaching a circuit board to a cover in the auxiliary light source of 4th Embodiment, (B) is sectional drawing which shows the state which fitted the circuit board in the groove part of the cover. Sectional view of a conventional light emitting device

(First embodiment)
Hereinafter, the lighting fixture of 1st Embodiment which concerns on this invention is demonstrated using drawing.
In addition, in the following description, the case where a lighting fixture is attached to a to-be-attached surface and the downward direction is illuminated is demonstrated. Therefore, unless otherwise indicated, upper (upper, upper, etc.) means the ceiling surface side, and lower (lower, lower, etc.) means the floor surface side.

As shown to FIG. 1 (A) and (B), the lighting fixture 10 of 1st Embodiment which concerns on this invention is attached to the ceiling surface 11 grade | etc., Which is a to-be-attached part, and is suitable for mainly illuminating the downward direction. .
As shown also in FIG. 2, the lighting fixture 10 has, for example, a disk-like fixture main body 20 having an attachment member 21 for attachment to the hook ceiling 12 attached to the ceiling surface 11.
In addition, a nightlight 23 is provided in the vicinity of the attachment member 21 in the central portion of the instrument body 20.
For example, an annular frame 22 is provided on the outer periphery of the instrument body 20, and an auxiliary light source 70, which is a light-emitting device using, for example, an LED as a light source, is used as a semiconductor light-emitting element described in detail later. Is provided.

An upper unit 30 that is an indirect light source, an upper frame 32, and an upper cover 31 are provided on the upper side of the instrument body 20 (that is, on the ceiling surface 11 side).
Further, a lower unit 40 that is a main light source and a lens 43 that is an optical member for the main light source are provided below the instrument body 20 (that is, on the illumination direction side).

The lower unit 40 includes a partial arc-shaped substrate 41 obtained by dividing the circular shape of the instrument body 20 into a plurality of pieces, and a plurality of LEDs 42 are mounted on each substrate 41. Each lower unit 40 irradiates light downward.
In front of the lower unit 40, there is provided a translucent panel 50 that receives light emitted from the lower unit 40 and diffuses the light. The panel 50 is attached to the frame body 22. The panel 50 has a curved surface shape curved downward.

As shown in FIGS. 2 and 3, the upper unit 30 includes a substrate 34 on which the LED 33 is mounted, a fixture 35 for attaching the substrate 34 to the upper surface of the instrument body 20, and a lens 36 that covers the front surface of the LED 33.
The fixture 35 is generally L-shaped, and the substrate 34 and the lens 36 are attached so as to be orthogonal to the upper surface of the fixture body 20 so that the irradiation direction of the LEDs 33 faces the outside of the lighting fixture 10.
Therefore, the light from the LED 33 is emitted outward in parallel with the upper surface of the instrument body 20.

As shown in FIGS. 4A and 4B, the frame body 22 has an annular shape, and has a space 221 in which the panel 50 is fitted. The front surface (lower surface 222) of the frame body 22 is inclined downward toward the center, and an opening 223 for the auxiliary light source 70 is provided at a predetermined interval (here, a central angle of 120 degrees). The opening 223 is provided in a curved shape corresponding to the outer shape of the frame body 22.
In addition, a sensor opening 224, an operation display lamp opening 225, and a state display lamp opening 226 are provided on the front surface (lower surface 222) of the frame body 22.
The sensor 241, the operation display lamp 242 and the status display lamp 243 are attached to a bracket 24 attached to the instrument body 20 (see FIG. 2).

As shown in FIGS. 5 and 6, the auxiliary light source 70 includes an arc-shaped circuit board 72 having an LED 71 mounted on a surface 721, a mounting body 73 to which the circuit board 72 is attached, and a cover 80 that covers the front of the LED 71.
The circuit board 72, the attachment body 73, and the cover 80 are curved according to the outer shape (circular shape) of the frame body 22, and the LEDs 71 are mounted on the circuit board 72 in an arc shape.
The circuit board 72 is not limited to an arc shape, but may be other shapes such as a rectangle or a square. Further, the arrangement of the LEDs 71 is not limited to the arc shape, and the LEDs 71 may be arranged so that the line connecting the LEDs 71 has a zigzag shape, a waveform shape, a mountain shape, or the like.

On the surface 721 of the circuit board 72 on which the LEDs 71 are mounted, a board-side connector 75 is attached to the center of one end on the extension line of the arcuate virtual line connecting the LEDs 71. The board-side connector 75 is connected to a supply-side connector 761 attached to an electric wire 76 that supplies lighting power to the LED 71. That is, one end of the electric wire 76 is connected to the center of the end of the circuit board 72 in the cover 80. Here, one end portion of the electric wire 76 is a portion connected to the circuit board 72, for example, one end portion is a supply side connector 761, and the other end portion is an electric wire portion extending from the supply side connector.
In the present embodiment, the board-side connector 75 is provided at the center of the end of one end of the circuit board 72 as the electric wire connecting part, but may be provided at the center of both ends.

  In the present embodiment, the auxiliary light source 70 has both ends of the cover 80 fixed to the mounting body 731 by screwing, but only one end may be screwed. In that case, it may have a structure in which the other end portion of the circuit board on the side that does not have the board-side connector 75 that is the electric wire connecting portion is locked to the end portion of the attachment main body 731. That is, after the other end portion of the cover 80 and the other end portion of the mounting body 731 are locked, one end portion of the cover 80 and one end portion of the mounting body 731 may be fixed with screws. According to this, screwing is only required at one place, and the assembly workability is improved.

  The mounting body 73 has an outer wall 732 at the outer edge of the flat mounting body main body 731 and an inner wall 733 at the inner edge of the mounting body main body 731, and has a U-shaped cross section. The attachment body 73 can be formed by bending a metal plate member.

The circuit board 72 is disposed between the outer wall 732 and the inner wall 733.
For this reason, out of the light emitted from the LED 71, the outward light and the inward light are shielded by the outer wall 732 and the inner wall 733 of the mounting body 73, so that leakage of the outward light and the inward light is prevented. Can be prevented.
Note that light leakage in the longitudinal direction (that is, circumferential direction) of the auxiliary light source 70 can be prevented by providing a light shielding wall (not shown) at the circumferential end portion of the upper surface of the opening 223 of the frame body 22.

Fixing screw holes 734 for attaching the attachment body 73 to, for example, the instrument body 20 at another location are provided at the center in the width direction at both longitudinal ends of the attachment body main body 731.
Further, mounting screw holes 735 and 736 for mounting the cover 80 to the mounting body 73 are provided on the inner side in the longitudinal direction of the fixing screw hole 734 in the mounting body main body 731.
Of the mounting screw holes 735 and 736, the mounting screw hole 736 on the side where the board-side connector 75 is provided is eccentrically provided outward.
The mounting screw holes 735 and 736 may be appropriately provided on the inner side depending on the structure employed. That is, the cover screw 80 735 (736) may be provided on one side with the central axis in the length direction of the cover 80 as a boundary, and the electric wire may be provided on the other side.

The cover 80 includes a curved flat cover body 81, an inner standing wall 821 extending toward the mounting body 73 inside the cover body 81, and an outer standing wall 822 extending toward the mounting body 73 outside.
Further, at the both ends in the longitudinal direction of the cover 80, mounting portions 831 and 832 are provided so as to protrude, and screw holes 833 and 834 for mounting to the mounting body 73 with mounting screws 835 are provided.

The attachment portion 832 and the screw hole 834 are provided eccentrically on the outside, and a wiring passage 84 for the electric wire 76 is provided between the inside of the attachment portion 832 and the inner standing wall 821.
Therefore, since the electric wires 76 are wired along the inner standing wall (wall portion) 821 provided inside the cover 80, the electric wires 76 are arranged so as to be displaced inward along the radial direction from the mounting line of the LED 71. . That is, the other end of the electric wire 76 is shifted from the center of the end of the circuit board 72 and led out of the cover 80 along the inner standing wall 821 of the cover 80.

A protrusion 85 that protrudes toward the attachment body 73 (that is, the upper side) is provided at the distal end on the wiring passage 84 side, which is the inner side at one end in the longitudinal direction of the cover 80.
Accordingly, as shown in FIG. 7, when the auxiliary light source 70 is assembled, the protrusion 85 of the cover 80 abuts on the end surface 737 of the attachment body 73, so that the cover 80 can be easily positioned with respect to the attachment body 73.

As shown in FIGS. 5, 8 </ b> A, and 8 </ b> B, a groove portion 86 into which the circuit board 72 is fitted is opposed to the inner surface upper end portion of the inner standing wall 821 and the inner surface upper end portion of the outer standing wall 822 of the cover 80. Is provided.
When the circuit board 72 is fitted in the groove 86 and attached to the cover 80, the circuit board 72 has a back surface 722 of the circuit board 72 and a lower surface of the mounting body 73 (circuit board) with respect to the mounting surface 811 between the mounting body 73 and the cover 80. One of the side surfaces 738 protrudes toward the other surface.
Here, the back surface 722 of the circuit board 72 protrudes toward the lower surface 738 of the attachment body 73.

That is, as shown in FIG. 8A, the depth D1 (for example, 0.8 mm) of the groove 86 is set to be smaller than the thickness T1 (for example, 1.0 mm) of the circuit board 72.
Therefore, as shown in FIG. 8B, when the circuit board 72 is attached to the groove portion 86 of the cover 80, the circuit board 72 moves from the attachment surface 811 to the attachment body 73 of the cover 80 to the attachment body 73 side by the height H1. Protruding. Here, H1 = T1-D1.
For this reason, when the cover 80 is attached to the attachment body 73 with the attachment screw 835, the back surface 722 of the circuit board 72 is pressed against the lower surface 738 of the attachment body 73, and the adhesion between the circuit board 72 and the attachment body 73 is improved.
Therefore, the heat of the LED 71 can be transmitted from the attachment body 73 to the instrument main body 20 and the like, and sufficient heat radiation can be performed, so that a decrease in luminous flux and a short life of the LED 71 accompanying a temperature rise can be prevented.

As shown in FIG. 5, lenses 87 for controlling the light distribution of the light from the LEDs 71 are provided in front of the plurality of LEDs 71 in the cover 80 in the irradiation direction (that is, below).
Each lens 87 is integrally formed, and the surface 871 protrudes downward from the cover body 81 in a stepped manner (see FIG. 6).
For this reason, when attaching the auxiliary light source 70 to the opening 223 (see FIG. 2) of the frame body 22, it is easy to fit the opening 223 in a stepped shape on the surface 721 side of the lens 87. The auxiliary light source 70 can be positioned.

As shown in FIG. 4B, a light shielding member 74 is provided between the outer standing wall (outer wall) 822 of the cover 80 and the side surface 872 of the lens 87.
As the light shield 74, a sheet-like member having a light shielding property can be used. Alternatively, a light-shielding resin or the like can be filled.

As described above, according to the auxiliary light source 70 that is the light emitting device of the first embodiment according to the present invention, the LED 71 is mounted on the circuit board 72 along the arcuate line, and the cover 80 covers the circuit board 72. Is screwed to the mounting body 73.
At this time, since the electric wire 76 connected to the circuit board 72 is wired inwardly along the radial direction from the mounting line of the LED 71, the electric wire length can be shortened. Accordingly, it is possible to improve noise resistance and reduce voltage drop.
Moreover, since the electric wire 76 is wired along the inner standing wall 821 provided inside the cover 80, a space for attaching the cover 80 to the attachment body 73 can be secured. It can prevent being caught in the attachment screw 835.

Moreover, since the projection part 85 which protrudes to the attachment body 73 side was provided inside the one end part of the longitudinal direction of the cover 80, the electric wire 76 is pressed at the corner | angular of the end surface 737 of the attachment body 73, and it is disconnected. Can be prevented.
Further, since the screw hole 834 for attaching the cover 80 to the attachment body 73 is provided on the outer side at one end, it is possible to prevent the electric wire 76 from being caught in the attachment screw 835 when the cover 80 is attached.

Furthermore, according to the lighting fixture 10 of 1st Embodiment which concerns on this invention demonstrated above, the electric wire 76 connected to the circuit board 72 is shifted | deviated and wired inside along the radial direction from the mounting line of LED71. Therefore, the wire length can be shortened.
Moreover, since the electric wire 76 is wired along the inner standing wall 821 provided inside the cover 80, a space for attaching the cover 80 to the attachment body 73 can be secured. It can prevent being caught in the attachment screw 835.

As described above, according to the auxiliary light source 70 that is the light emitting device of the first embodiment according to the present invention, the LED 71 is mounted on the surface 721 of the circuit board 72 and the circuit board 72 is fitted into the groove 86 of the cover 80. Then, the cover 80 is attached to the attachment body 73 so as to cover the LED 71.
At this time, one surface of the back surface 722 of the circuit board 72 and the circuit board side surface (that is, the lower surface 738) of the mounting body 73 faces the other surface with respect to the mounting surface 811 of the mounting body 73 and the cover 80. Therefore, the circuit board 72 and the mounting body 73 are pressed against each other and are brought into close contact with each other. For this reason, the heat generated by the LED 71 is reliably transmitted from the circuit board 72 to the mounting body 73, so that heat dissipation can be ensured.
Further, since the circuit board 72 can be positioned by fitting it into the groove 86, the assembly workability is improved.

Further, since the circuit board 72 side protrudes toward the attachment body 73, the cover 80 presses the circuit board 72 against the attachment body 73 when the cover 80 is attached to the attachment body 73.
For this reason, the circuit board 72 and the attachment body 73 can be in close contact with each other, and the heat generated by the LED 71 is reliably transmitted from the circuit board 72 to the attachment body 73, so that heat dissipation can be ensured.

Further, since the thickness T1 of the circuit board 72 is larger than the depth D1 of the groove part 86 provided in the cover 80, the circuit board 72 protrudes when the circuit board 72 is attached to the groove part 86 of the cover 80. To do.
For this reason, when the cover 80 is attached to the attachment body 73, the circuit board 72 and the attachment body 73 can be closely adhered, and the heat generated by the LED 71 is reliably transmitted from the circuit board 72 to the attachment body 73. Therefore, heat dissipation can be ensured.

  Furthermore, according to the lighting fixture 10 of 1st Embodiment which concerns on this invention demonstrated above, since the circuit board 72 and the attachment body 73 are mutually pressed and adhere | attached, the heat | fever which LED71 emitted is from the circuit board 72. It is reliably transmitted to the attachment body 73, and heat dissipation can be ensured.

As described above, according to the auxiliary light source 70 that is the light emitting device of the first embodiment according to the present invention, the LED 71 is mounted on the circuit board 72, and the cover 80 is attached to the attachment body 73 so as to cover the LED 71 and the circuit board 72. It is attached.
And since the outer wall 732 was provided in the outer edge part of the attachment body 73, it can prevent that the light of the auxiliary light source 70 leaks outside, without causing the increase in a number of parts and a cost increase.

  Further, since the inner wall 733 is also provided on the inner edge portion of the mounting body 73, it is possible to prevent the light from the auxiliary light source 70 from leaking inward without increasing the number of parts and increasing the cost.

  Further, since the light blocking member 74 is provided between the outer standing wall 822 of the cover 80 and the side surface 872 of the lens 87, it is possible to prevent the light from the auxiliary light source 70 from leaking outside.

  Furthermore, according to the lighting fixture 10 of 1st Embodiment which concerns on this invention demonstrated above, since the auxiliary light source 70 mentioned above was used, the light of the auxiliary light source 70 did not cause the increase in a number of parts, or a cost increase. It can prevent leaking.

(Second Embodiment)
Next, the light-emitting device and lighting fixture of 2nd Embodiment which concern on this invention are demonstrated.
In addition, the same code | symbol is attached | subjected to the site | part which is common in the light-emitting device and lighting fixture which concern on 1st Embodiment mentioned above, and suppose that the overlapping description is abbreviate | omitted.

As shown in FIGS. 9A and 9B, in the auxiliary light source 70B and the lighting fixture 10B, which are the light emitting devices of the second embodiment according to the present invention, the convex portion 739 that protrudes toward the circuit board 72 on the mounting body 73B. Is provided. The height of the convex portion 739 is t.
The depth D2 of the groove part 86 of the cover 80 is larger than the thickness T2 of the circuit board 72. When the circuit board 72 is fitted into the groove part 86, the back surface 722 of the circuit board 72 is recessed by h from the mounting surface 811. Here, h = D2-T2.

On the other hand, the height t of the convex portion 739 is set larger than h.
Thus, when the cover 80 is attached to the attachment body 73, the convex portion 739 of the attachment body 73 presses and adheres to the back surface 722 of the circuit board 72, so that the heat generated by the LED 71 is transmitted from the circuit board 72 to the attachment body 73. It is reliably transmitted to the convex part 739, and heat dissipation can be ensured.

(Third embodiment)
Next, the light-emitting device and lighting fixture of 3rd Embodiment concerning this invention are demonstrated.
In addition, the same code | symbol is attached | subjected to the site | part which is common in the light-emitting device and lighting fixture which concern on 1st Embodiment mentioned above, and suppose that the overlapping description is abbreviate | omitted.

As shown in FIGS. 10A and 10B, in the auxiliary light source 70 </ b> C and the lighting fixture 10 </ b> C that are the light emitting device according to the third embodiment of the present invention, a sheet 88 is provided below the circuit board 72, The back surface 722 of the substrate 72 protrudes toward the attachment body 73.
That is, when the thickness of the circuit board 72 is T3, the thickness of the sheet 88 is t3, and the depth of the groove 86 is D3, the thickness t3 of the sheet 88 is set so that T3 + t3> D3.

  Accordingly, when the cover 80 is attached to the attachment body 73, the lower surface 738 of the attachment body 73 presses and adheres to the back surface 722 of the circuit board 72, so that the heat generated by the LED 71 is reliably transmitted from the circuit board 72 to the attachment body 73. The heat dissipation is ensured.

(Fourth embodiment)
Next, the light-emitting device and lighting fixture of 4th Embodiment concerning this invention are demonstrated.
In addition, the same code | symbol is attached | subjected to the site | part which is common in the light-emitting device and lighting fixture which concern on 1st Embodiment mentioned above, and suppose that the overlapping description is abbreviate | omitted.

As shown in FIGS. 11A and 11B, in the auxiliary light source 70 </ b> D and the lighting fixture 10 </ b> D that are the light emitting device according to the fourth embodiment of the present invention, the heat dissipation sheet 89 having thermal conductivity on the upper side of the circuit board 72. The upper surface 891 of the heat dissipation sheet 89 protrudes toward the attachment body 73 side.
That is, assuming that the thickness of the circuit board 72 is T4, the thickness of the heat dissipation sheet 89 is t4, and the depth of the groove 86 is D4, the thickness t4 of the heat dissipation sheet 89 is set so that T4 + t4> D4.

  Accordingly, when the cover 80 is attached to the attachment body 73, the lower surface 738 of the attachment body 73 presses and adheres to the upper surface 891 of the heat dissipation sheet 89. For this reason, the heat | fever which LED71 emitted is reliably transmitted to the attachment body 73 via the heat radiating sheet 89 from the circuit board 72, and can ensure heat dissipation.

  In addition, the light-emitting device and lighting fixture of this invention are not limited to each embodiment mentioned above, A suitable deformation | transformation, improvement, etc. are possible. In each of the above embodiments, the LED light source is used.

10, 10B, 10C, 10D Lighting fixture 20 Appliance body (other place)
22 Frame 40 Lower unit (main light source)
70, 70B, 70C, 70D Auxiliary light source (light emitting device)
71 LED (light emitting element)
72 Circuit board 721 Front surface 722 Back surface 73 Mounting body 80 Cover 811 Mounting surface 86 Groove

Claims (2)

A plate-like attachment body attached to another place, and a pair of wall portions provided along the longitudinal direction at both ends of the attachment body in the width direction, which is a direction orthogonal to the longitudinal direction. A mounting body having a U-shaped cross section;
Together provided to close contact with the mounting body, on the surface, a plurality of light emitting elements are mounted along the longitudinal direction, and a circuit board having a predetermined thickness,
A cover that covers the light emitting element and the circuit board and is fixed to the mounting body with a screw so as to closely contact the circuit board to the mounting body body;
Have
The cover is
A flat cover body disposed along the longitudinal direction of the attachment body;
Provided along the longitudinal direction of the attachment body at both ends of the cover body in the width direction of the attachment body, and provided with a groove for fitting the circuit board at the end on the attachment body side. A pair of standing walls;
A mounting portion having a mounting surface facing the mounting body;
A lens provided on the mounting body side of the cover body;
Have
The depth of the groove portion of the cover is either smaller than or greater than a predetermined thickness of the circuit board,
When the groove depth of the cover is less than the predetermined thickness of the circuit board, in a state where the circuit board is fitted in the groove of the cover, of the circuit board, the mounting member body surface, on the side of the mounting body from the mounting surface, a state that protrudes by the difference between the predetermined thickness of the depth and the circuit board of the groove of the cover and the mounting body is shaped like a flat plate The surface of the mounting body main body opposite to the other portion is a flat surface, and the flat surface is pressed against the surface of the circuit board on the mounting body main body side when the cover is mounted on the mounting body. It is a state that has been
When the groove depth of the cover is greater than the predetermined thickness of the circuit board, in a state where the circuit board is fitted in the groove of the cover, of the circuit board, the mounting member body the surface than the mounting surface, a state are Nde only concave difference between a predetermined thickness of the depth and the circuit board of the groove of the cover and the mounting body is a portion protruding on the side of the cover In the state where the cover is attached to the attachment body, the flat surface in the portion protruding to the cover side on the surface opposite to the other part of the attachment body main body is the structure having a step having situations that der are pressed against the mounting body-side surface of the circuit board the light-emitting device. An instrument body containing a main light source and having a circular outer shape in plan view;
An annular frame provided along the outer periphery of the instrument body;
The light-emitting device according to claim 1 attached to the frame,
A lighting fixture having.

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