JP7107705B2 - Light source unit and lighting equipment - Google Patents

Description

The present invention relates to a light source unit and lighting equipment.

BACKGROUND ART In recent years, various lighting fixtures using LEDs (Light Emitting Diodes), which have advantages such as low power consumption and long life, as light sources have been proposed.

For example, Patent Literature 1 discloses a lighting fixture having a translucent cover (shade) attached to an attachment portion so as to cover an LED module in a light source unit. Specifically, the translucent cover disclosed in Patent Document 1 includes a cover main body having an arc-shaped cross section formed between one edge and the other edge, and one edge of the cover main body being a base end. A first cover side wall portion standing up as a portion and a second cover side wall portion standing up with the other edge of the cover main body as a base end portion. That is, the translucent cover has a first cover side wall portion and a second cover side wall portion as flat portions on the side surface. The first cover side wall portion and the second cover side wall portion are configured to be orthogonal to the arrangement surface of the LED module.

JP 2017-76569 A

However, in the lighting fixture disclosed in Patent Document 1, since the side surface of the light-transmitting cover is flat, the worker removes the light-transmitting cover when removing the light source unit from the fixture main body (main unit). It was difficult to grasp by hand (there was no part to hook with fingers), and the attachment and detachment work of the light source unit was complicated.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a light source unit and a lighting fixture in which a worker can easily grasp the shade by hand when removing the light source unit from the main unit. do.

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

That is, the lighting fixture disclosed in the present application is
a light source unit having a light source section;
A lighting fixture comprising a body unit that holds the light source unit,
The light source unit has an elongated shade that covers the light source,
The shade is
a facing surface portion arranged to face the light source portion and covering the irradiation surface side of the light source portion;
a pair of side portions extending from both ends in the short direction of the facing surface portion and covering side surfaces of the light source portion;
The side surface portion includes a flat portion arranged along the longitudinal direction of the shade, and a pair of groove portions arranged between one end of the flat portion in the short direction and both ends of the opposite surface portion in the short direction. have
The groove is provided along the longitudinal direction so as to be positioned at the boundary between the side surface and the facing surface .

In the lighting fixture disclosed in the present application,
It is preferable that the pair of side portions are parallel to each other.

The light source unit disclosed in the present application is
A light source unit having a light source,
The light source unit has an elongated shade that covers the light source,
The shade is
a facing surface portion arranged to face the light source portion and covering the irradiation surface side of the light source portion;
a pair of side portions extending from both ends in the short direction of the facing surface portion and covering side surfaces of the light source portion;
The side surface portion includes a flat portion arranged along the longitudinal direction of the shade, and a pair of groove portions arranged between one end of the flat portion in the short direction and both ends of the opposite surface portion in the short direction. have
The groove is provided along the longitudinal direction so as to be positioned at the boundary between the side surface and the facing surface .

According to the present invention, the provision of the groove on the side surface makes it easier for the worker to grasp the light source unit by hand when removing the light source unit from the main unit. Furthermore, the height dimension of the plane portion is visually felt to be small compared to the configuration in which the groove portion is not provided on the side portion, and the shade and the light source unit look thin.

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which looked at the lighting fixture which concerns on embodiment of this invention from diagonally downward. The top view which similarly looked at the lighting fixture from the downward direction. The perspective view which shows a main unit. The perspective view which shows a light source unit. FIG. 3 is a cross-sectional view taken along line AA showing the lighting fixture shown in FIG. 2 (with the main unit and light source unit separated); FIG. 3 is a cross-sectional view along the line BB in FIG. 2; It is a figure which shows a mounting bracket, (a) is a perspective view, (b) is a top view, (c) is a side view. The side view which shows the modification of a mounting bracket. It is a figure which shows a mounting spring, (a)(b) is a perspective view, (c) is a side view. FIG. 4 is a cross-sectional view showing a light source unit arranged below the main unit; FIG. 4 is a cross-sectional view showing a state in which the hook portion of the light source unit is hooked on the hook portion of the main unit; FIG. 4 is a cross-sectional view showing a state in which the light source unit is held substantially horizontally; The figure which shows the state which attached the light source unit to the main unit. The perspective view which shows the modification of a mounting spring. A perspective view showing a modified example of the recess. FIG. 7 is an enlarged cross-sectional view showing an enlarged groove portion of the shade in FIG. 6 ; FIG. 3 is an exploded perspective view showing an exploded light source unit; FIG. 18 is a partially enlarged perspective view showing an enlarged part of the light source section in FIG. 17; (a) is a top view showing a state in which the wiring is held by the holding portion of the mounting spring, and (b) is a cross-sectional view taken along line CC in (a). Y arrow directional view in Fig.19 (a). The perspective view which shows an end cap. FIG. 4 is a cross-sectional view showing a state in which wiring is arranged in the guide portion of the end cap; The perspective view which shows the modification of a mounting bracket. The perspective view which shows the modification of a mounting spring.

A lighting fixture 11 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 22. FIG. A lighting fixture 11 according to the present embodiment is a lighting fixture that uses an LED 53 as a light source. The lighting fixture 11 is a base light that is directly attached to a mounting surface (ceiling surface C in this embodiment) such as a ceiling surface or a wall surface. As shown in FIG. 2, the luminaire 11 has an elongated shape in which the ratio of the length in the longitudinal direction to the length in the lateral direction is large in a plan view. In the following description, the side of the lighting fixture 11 that irradiates light is defined as the irradiation surface side of the lighting fixture 11, and the side of the lighting fixture 11 facing the mounting surface such as the ceiling surface or the wall surface is the mounting surface side of the lighting fixture 11 (irradiation surface side). side opposite to the face side). 1 , 3 to 6 , 10 to 13 , 16 , 20 and 22 in the lighting device 11 will be described as the “vertical direction” of the lighting device 11 . In addition, in the description of the present embodiment, a state in which the lighting fixture 11 and the like are viewed from below is referred to as a plan view. A side view is a state in which the lighting fixture 11 and the like are viewed from a direction perpendicular to the vertical direction. A state in which the cross-sectional shape of the lighting equipment 11 and the like is viewed is referred to as a cross-sectional view.
The shape of the lighting device 11 is not limited to the elongated shape shown in this embodiment, and may be circular or square in plan view.
Moreover, although the lighting fixture 11 which concerns on this embodiment is a ceiling direct attachment type lighting fixture directly attached to the ceiling surface C, it does not specifically limit. For example, it may be an embedded lighting fixture that is embedded in the ceiling surface or the like.

The lighting fixture 11 includes a main body unit 21 serving as a fixture body of the lighting fixture 11 and a light source unit 41 .

The main unit 21 has an elongated rectangular shape in a plan view and a substantially trapezoidal shape in a cross-sectional view. As shown in FIG. 3, the body unit 21 has a recess 22 extending in the longitudinal direction in the shape of a groove at the center of the body unit 21 in the short side direction on the irradiation surface side (lower side). The concave portion 22 has a substantially U-shaped cross section, and has an upper surface portion (bottom portion) 22a and a pair of side wall portions 22b extending downward from both ends of the upper surface portion 22a in the short direction and facing each other. The upper surface portion 22a is a portion that is attached close to the ceiling surface C by means of attachment members (for example, bolts, nuts, etc.). The body unit 21 is a member that holds the light source unit 41 on the irradiation surface side while the light source unit 41 is attached to the concave portion 22 .

The main body unit 21 includes a concave portion 22, an inclined surface portion 25 extending obliquely upward from the lower end portion of a side wall portion 22b of the concave portion 22, a side wall portion 24 extending upward from the upper end portion of the inclined surface portion 25, and a main body. It has end members 26 , terminal blocks 62 , and mounting brackets 31 that are disposed at both ends of the unit 21 in the longitudinal direction and close the recess 22 and the inclined surface portion 25 at both ends in the longitudinal direction. The main unit 21 has a bottomed box-like space with an elongated rectangular opening formed by the recess 22 and the end member 26 .
In addition, in the present embodiment, one concave portion 22 is provided on the irradiation surface side of the main unit 21, but it is not particularly limited. For example, a configuration may be adopted in which a plurality of recesses are provided on the irradiation surface side of the main unit for mounting a plurality of light source units 41 .
Moreover, the upper surface portion 22a, the side wall portion 22b, the inclined surface portion 25, and the side wall portion 24 are integrally molded. Further, the end member 26 and the integrally formed member including the upper surface portion 22a, the side wall portion 22b, the inclined surface portion 25, and the side wall portion 24 are configured as separate members.
Further, the upper surface portion 22a, the side wall portion 22b, the inclined surface portion 25, the side wall portion 24, and the end member 26 may be integrally formed.

The inclined surface portion 25 is a portion adjacent to the light source unit 41 when the light source unit 41 is attached to the main body unit 21. It becomes a light reflecting surface that reflects toward.

Examples of materials that constitute the main unit 21 include metallic materials with high thermal conductivity, such as aluminum, aluminum alloys, iron, and iron alloys. The body unit 21 is made of a metal material such as an iron alloy in consideration of durability for holding the light source unit 41 and thermal conductivity for dissipating heat generated by the light source unit 41 . The body unit 21 is formed, for example, by bending and working a sheet metal (in this embodiment, a sheet metal made of iron alloy). The main unit 21 is not limited to metals such as iron alloys, but may be made of other materials such as resin, or a combination thereof, as long as the material can ensure the durability and necessary heat dissipation to hold the light source unit 41 . can be formed.
Alternatively, the end member 26 may be made of a resin material and the other members may be made of a metal material. As a result, it is possible to reduce the weight and cost of the lighting fixture.

The concave portion 22 is a portion that accommodates the upper end side of the light source unit 41 (for example, the power supply device 61 for lighting the LED 53 of the light source portion 51, etc.). The recessed portion 22 has a height (depth) and a width for accommodating the power supply device 61, the terminal block 62, wiring, etc. in the recessed portion 22 when the upper end side of the light source unit 41 is attached to the recessed portion 22. there is Mounting brackets 31 for mounting mounting springs 71 of the light source unit 41, which will be described later, are provided at a plurality of locations (two locations in this embodiment) in the middle of the recess 22 in the longitudinal direction (see FIG. 5). reference). A through hole 27 is formed in the upper surface portion 22a of the concave portion 22 near the center in the longitudinal direction of the light source unit 41, and a power wire (not shown) extends from an external power source arranged inside the ceiling surface C. is inserted.

The terminal block 62 is attached to the irradiation surface side of the upper surface portion 22a. The terminal block 62 is arranged between the mounting bracket 31 and the through hole 27 within the recess 22 . A power line is connected to the terminal block 62 .

The mounting bracket 31 is arranged in the recess 22 of the main unit 21 . The mounting bracket 31 can mount the mounting spring 71 of the light source unit 41 . The mounting bracket 31 is a substantially rectangular (substantially U-shaped) metal member in cross section (see FIG. 7(c), etc.). The mounting bracket 31 is attached to the irradiation surface side of the upper surface portion 22 a of the recess 22 . The mounting brackets 31 face the through hole 27 provided in the longitudinal center of the upper surface portion 22 a of the main unit 21 , and are arranged at equal intervals from the through hole 27 .
As described above, in the present embodiment, the pair of mounting brackets 31 face each other with the through hole 27 as the center and are arranged at equal intervals from the through hole 27, but this is an example, and the mounting brackets 31 can be arranged at any position in the longitudinal direction of the upper surface portion 22a of the main unit 21 .

As shown in FIG. 7 , the mounting bracket 31 has an extending portion 32 , a second engaged portion 33 arranged to face the extending portion 32 , and a connecting portion 34 . The connecting portion 34 has a substantially plate shape and connects the extending portion 32 and the second engaged portion 33 . A plurality of (two in this embodiment) through holes 35 are formed in the connecting portion 34 . The mounting bracket 31 is attached to the recess 22 by screwing a screw through the through hole 35 toward the upper surface portion 22 a of the recess 22 .

The extending portion 32 is a portion that extends outward in the extending direction of the connecting portion 34 from one end of the connecting portion 34 , and has a hook portion 36 and a first engaged portion 37 . The hook portion 36 is a portion for hooking the hook portion 72 of the mounting spring 71 . The first engaged portion 37 is a portion with which the first engaging portion 72c of the mounting spring 71 is engaged.

The hook portion 36 is substantially plate-shaped and substantially U-shaped when viewed from the side, and extends substantially perpendicularly from one end of the connecting portion 34 . The first engaged portion 37 has a substantially plate-like shape and is formed by cutting and raising it to the outside of the hook portion 36 in the extending direction of the connecting portion 34 . That is, the first engaged portion 37 is formed to protrude outward from the upper edge of a substantially U-shaped through hole 38 formed in the hook portion 36 from one end in the extending direction of the connecting portion 34 . there is The first engaged portion 37 has an overhang portion 37a, a base portion 37b, and a bent portion 37c. The protruding portion 37 a has a substantially plate shape and extends from one end of the connecting portion 34 to the outside of the hook portion 36 . The base portion 37b has a substantially plate shape and extends substantially perpendicularly from one end of the projecting portion 37a. The bent portion 37c has a bent plate shape, extends from the tip portion of the base portion 37b, and has a substantially V-shaped cross-section that protrudes toward the second engaged portion 33 facing the first engaged portion 37. part of the shape. The bent portion 37c has a substantially plate-like inclined surface 37d, the tip portion of which extends obliquely downward toward the second engaged portion 33 side. A first engaging portion 72c of the mounting spring 71 is engaged with the bent portion 37c.

The second engaged portion 33 has a base portion 33a and a bent portion 33b. The base portion 33 a has a substantially plate shape and extends substantially perpendicularly from the other end of the connecting portion 34 . The bent portion 33b has a bent plate shape, extends from the distal end portion of the base portion 33a, and protrudes toward the extended portion 32 facing the second engaged portion 33, and has a substantially V-shaped cross section. is. The bending portion 33b has a substantially plate-like inclined surface 33c, the tip portion of which extends obliquely downward toward the extending portion 32 side. The second engaging portion 73 of the mounting spring 71 is engaged with the bent portion 33b.
The extending portion 32 and the second engaged portion 33 are connected by a connecting portion 34 only on the upper edge side, and are separated from each other on the lower edge side. As a result, the tip side of the second engaged portion 33 is a free end and only the base end side is a fixed end, so that the elastic deformation of the second engaged portion 33 is not hindered. In addition, the mounting spring 71 of this embodiment uses less material than the structure connecting the lower edge side, resulting in cost reduction, and is easy to manufacture because it is easy to process.

8 shows a mounting bracket 31A as a modified example of the mounting bracket 31. As shown in FIG. The mounting bracket 31A further includes an inclined extending portion 39 having an inclined surface 39a at the tip thereof on the side of the mounting bracket 31 facing the hooking portion 36 of the second engaged portion 33. As shown in FIG. With this configuration, when the light source unit 41 is attached to the main body unit 21 , the second engaging portion 73 of the mounting spring 71 is brought into contact with the inclined surface 39 a so that the second engaging portion 73 is attached to the mounting bracket 31 . , the light source unit 41 can be guided to the proper position of the main body unit 21 .

As shown in FIG. 5, the light source unit 41 includes a base member 42 as a mounting member, a light source section (LED module substrate) 51, a power supply device 61 as a power section, a mounting spring 71, a shade 81, and a pair of end caps 91. Prepare the Lord.

The base member 42 is a member that holds the light source section (LED module substrate) 51 and the shade 81 on the irradiation surface side, and holds the power supply device 61 and the mounting spring 71 on the mounting surface side. The base member 42 is an elongated plate-like member made of metal. The base member 42 also has a heat dissipation function of absorbing heat generated by the light source section 51 and releasing it to the air outside the base member 42 . The base member 42 is formed so that its lengthwise dimension and widthwise dimension are slightly smaller than those of the concave portion 22 described above.

The light source attachment portion 42a is a portion to which the light source portion (LED module substrate) 51 is attached. The light source mounting portion 42 a is a plate-like portion that is rectangular in plan view and is located on the irradiation surface side (lower side) of the base member 42 . The base member 42 also has a heat dissipation function of absorbing heat generated by the light source unit 51 and releasing it to the air outside the base member 42 . is formed flat so that the contact area of the

The light source unit 51 is a portion that emits light toward the irradiation surface side of the lighting device 11 . The light source unit 51 is a module substrate, as shown in FIG. The light source unit 51 has a long substrate 54 processed into a flat plate shape (horizontally long shape), and a plurality of LEDs 53, which are point light sources, are arranged on the substrate 54 in the longitudinal direction of the substrate 54 at regular intervals and in a substantially straight line. They are arranged side by side (see FIG. 17). The plurality of LEDs 53 are arranged substantially in the center of the substrate 54 in the lateral direction. In this embodiment, a plurality of LED elements (surface-mount type LED elements) are used as the light source, but the present invention is not limited to this, and a COB light emitting module, an organic EL element, or the like may be used. The light source section 51 is arranged in contact with the irradiation surface side of the light source mounting section 42a, and is mounted by mounting members such as screws. The light source unit 51 is electrically connected to the power supply device 61 via wiring 63 .
The light source section 51 may be attached to the light source mounting section 42a via a thermally conductive sheet (not shown) or heat dissipation grease, thereby obtaining higher heat dissipation.

As shown in FIG. 17, a connector 64 to which a wiring 63 is electrically connected to at least one longitudinal end of the substrate 54 is provided on the irradiation surface side of the substrate 54 . The connector 64 is for electrically connecting to the power supply device 61 via the wiring 63 . By connecting the wiring 63 to the connector 64, the substrate 54 and the power supply device 61 are electrically connected. The connector 64 is arranged at a different position from the plurality of LEDs 53 in the lateral direction of the substrate 54 . Specifically, as shown in FIG. 18, the connector 64 is provided at a position shifted from the center of the board 54 in the lateral direction (width direction).
17 and 18, the vertical direction of the light source unit 41 and the power supply device 61 is opposite to the vertical direction of the paper surface.

The power supply device 61 is a device for supplying power to the LED 53 of the light source unit 51 through a wiring 63 to light the LED 53 . The power supply device 61 contains a power supply circuit in which a plurality of electronic components are mounted on a printed wiring board processed into a rectangular parallelepiped shape in a box-shaped power supply case. The power supply device 61 is arranged near the center in the longitudinal direction of the base member 42 on the mounting surface side of the light source mounting portion 42a. The power supply device 61 converts alternating current supplied from an external power supply into a predetermined direct current and supplies the converted current to the plurality of LEDs 53 mounted on the board 54 . The power supply device 61 is electrically connected to a terminal block 62 of the main unit 21 via wiring (not shown).

As shown in FIG. 5, the power supply device 61 is arranged at a position facing the through hole 27 of the light source mounting portion 42a. The power supply device 61 has an inclined surface 61a at one end of the upper surface of the power supply case. The inclined surface 61 a faces the through hole 27 when the light source unit 41 is attached to the main unit 21 . By providing the inclined surface 61 a in the power supply device 61 , a large space can be secured between the through hole 27 and the power supply device 61 when the light source unit 41 is attached to the main unit 21 . It is possible to prevent sharp bending of the power wire of the external power source, and prevent damage to the power wire coating and breakage of the power wire.

When attaching the lighting fixture 11 to the ceiling surface C, the main unit 21 is fixed to the ceiling surface C by pulling out the power line of the external power supply from the through hole 27 . The power supply device 61 is electrically connected to an external power supply by connecting the power supply line to the terminal block 62 . The power supply device 61 and the light source unit 51 are electrically connected by wiring.

The mounting spring 71 is attachable to and detachable from the mounting bracket 31 of the main unit 21 . The mounting spring 71 is an elastic metal member having a substantially rectangular shape (substantially U shape) in cross section (see FIG. 9). The mounting spring 71 is, for example, a leaf spring made of metal. The mounting spring 71 is mounted on the mounting surface side of the light source mounting portion 42a. The mounting springs 71 face the central portion of the mounting surface side of the light source mounting portion 42a in the longitudinal direction, and are arranged at equal intervals from the central portion. That is, the mounting spring 71 is arranged at a position corresponding to the mounting bracket 31 of the main unit 21 .

As shown in FIG. 9 , the mounting spring 71 has a hook portion 72 , a second engaging portion 73 arranged to face the hook portion 72 , and a connecting portion 74 . The connecting portion 74 has a substantially plate shape and connects the hook portion 72 and the second engaging portion 73 . A plurality of (two in this embodiment) through-holes 75 for screwing are formed in the connecting portion 74 . The mounting spring 71 is mounted on the mounting surface side of the light source unit 41 by screwing a screw from the mounting surface side of the light source mounting portion 42 a through the through hole 75 .

A through hole 76 is formed at an arbitrary position in the connecting portion 74 . The through-hole 76 prevents the tip of the screw penetrating the light source mounting portion 42a and protruding toward the mounting surface from interfering with the connecting portion 74 when the substrate 54 is fixed to the light source mounting portion (chassis) 42a with a screw. It is for

Further, as shown in FIG. 9, the connecting portion 74 of the mounting spring 71 has a holding portion 77 that is convex upward (mounting surface side) and has a rectangular shape in a side view. The holding portion 77 holds, for example, the wiring 63, which is the secondary side wiring extending from the power supply device 61 to the substrate 54 on which a plurality of LEDs 53 are mounted, along the irradiation side surface of the light source mounting portion 42a (FIG. 19A). )reference). As a result, when fixing the wiring 63 to the base member 42, it is sufficient to pass the wiring 63 through the holding portion 77 of the mounting spring 71 and hold the wiring 63. Therefore, the work of fixing the wiring 63 can be easily performed. Moreover, since the position of the wiring 63 can be fixed along the base member 42, the wiring 63 can be prevented from floating from the base member 42, and the risk of disconnection due to being caught can be reduced. As an example of reducing the risk of disconnection, it is possible to prevent disconnection due to the wiring 63 being sandwiched between the light source unit 41 and the main unit 21 when the light source unit 41 is attached to the main unit 21 . Furthermore, when the light source unit 41 is detached from the main unit 21, disconnection due to the wiring 63 being caught by the mounting bracket 31 of the main unit 21 can be prevented. Moreover, since the wiring 63 can be fixed at the same time when the mounting spring 71 is attached to the base member 42, the assembling workability of the lighting fixture 11 is improved.
The shape of the holding portion 77 may be any shape as long as it can hold the wiring 63, and may be any shape other than a rectangular shape in a side view. The shape of the holding portion 77 may be semicircular, semielliptical, triangular, or the like, for example.

Moreover, it is preferable that the height dimension and width dimension of the holding portion 77 are slightly larger than the thickness (outer diameter) of the wiring 63 . As a result, a continuous pressing force is not applied to the wiring 63, so damage to the covering of the wiring 63 can be prevented. In other words, if the dimension of the holding portion 77 is smaller than that of the wiring 63, the wiring 63 will continue to be pressed and there is a risk of coating damage.

The holding portion 77 is provided at a position closer to the end portion of the board 54 in the short direction (width direction) than the plurality of LEDs 53 in the short direction (width direction) of the board 54 . The holding portion 77 is provided at a position shifted from the plurality of LEDs 53 in the lateral direction (width direction) of the substrate 54 . Specifically, the plurality of LEDs 53 are arranged along the longitudinal direction of the substrate 54 at the center of the substrate 54 in the short direction (width direction). That is, the plurality of LEDs 53 are arranged along line CC in FIG. 19(a). On the other hand, the holding portion 77 is provided at a position shifted from the widthwise center (CC line) of the mounting spring 71 . As a result, the wiring 63 arranged on the mounting surface side of the base member and the plurality of LEDs 53 arranged on the substrate 54 can be prevented from overlapping each other, so that the heat generated by the LEDs 53 is transmitted through the wiring through the base member 42 . 63 can be made difficult to be transmitted. As a result, deterioration of the wiring 63 due to heat can be prevented.
In addition, the position of the LED 53 on the substrate 54 in the width direction is not limited to the center, and may be a position closer to the end in the width direction. In this case, it is preferable that the eccentric directions are different from each other so that the width direction position of the LED 53 and the width direction position of the wiring 63 do not overlap on the front and back (irradiation surface side and mounting surface side).

As described above, the board 54 is provided with the connector 64 to which the wiring 63 is electrically connected to at least one longitudinal end of the board 54 . The connector 64 is arranged at a position different from the position where the plurality of LEDs 53 are arranged in the lateral direction of the substrate 54 . Also, the holding portion 77 is provided at a position corresponding to the connector 64 in the lateral direction of the substrate 54 . That is, by locating the holding portion 77 and the connector 64 at the same position in the lateral direction of the substrate 54 , the wiring 63 arranged between the holding portion 77 and the connector 64 extends substantially along the longitudinal direction of the substrate 54 . become linear.
By arranging the connector 64 at a position different from that of the plurality of LEDs 53 in the lateral direction of the board 54 in this way, the LEDs 53 can be arranged up to the longitudinal end of the board 54 . It is possible to secure the amount of light in the part. Further, when the connector 64 is provided at the end of the board 54 where the LEDs 53 are arranged side by side (the end of the LED row), the distance between the LED 53 arranged at the end and the connector 64 is short. is likely to enter the light distribution range of the LEDs 53 (for example, a light distribution angle of 120 degrees), the connector 64 may block the light emitted by the adjacent LEDs 53 , and the shade 81 may be shaded. In this embodiment, since the connector 64 is not provided at the end of the LED row, and the connector 64 is arranged at a position shifted in the width direction from the LED row, the distance between the LED 53 and the connector 64 can be increased. 64 is less likely to enter the light distribution range of the LED 53 (for example, a light distribution angle of 120 degrees), and the shade 81 is less likely to be shaded. In addition, since the holding portion 77 is provided at a position corresponding to the connector 64, the wire 63 is not bent at a steep angle, so the risk of disconnection of the wire 63 can be reduced.

In the present embodiment, the plurality of LEDs 53 are arranged in one row in the center in the lateral direction (width direction) of the substrate 54. , 3 rows, etc.) may be arranged side by side. In this case, the center becomes the width direction center of LED53 of multiple rows.

The hook portion 72 is a portion that hooks onto the hook portion 36 of the mounting bracket 31 of the main unit 21 . The hook portion 72 is for temporarily hanging the light source unit 41 from the main unit 21 by hooking it on the hook portion 36 .
Here, “temporary suspension” refers to a state in which the light source unit 41 is temporarily suspended from the main unit 21 for wiring connection or repair inspection, for example, when the light source unit is attached to the main unit 21 .

The hook portion 72 has a hook shape when viewed from the side, and has a base portion 72a, a curved portion 72b, and a first engaging portion 72c. The base portion 72 a has a substantially plate shape and extends substantially perpendicularly from one end of the connecting portion 74 . The curved portion 72b is a plate-like portion that extends from the distal end portion of the base portion 72a and is curved in an arc shape when viewed from the side. The first engaging portion 72c has a bent plate shape, extends from the distal end portion of the curved portion 72b, and has a substantially V-shaped cross section that protrudes toward the base portion 72a facing the first engaging portion 72c. part. The first engaging portion 72c includes a substantially plate-like inclined surface 72d whose tip portion extends obliquely downward toward the extension portion 32, and an inclined surface 72d extending from the tip portion in a direction away from the base portion 72a. It has a substantially plate-like inclined surface 72e that extends obliquely downward toward it. The first engaging portion 72 c engages with the first engaged portion 37 (bent portion 37 c ) of the mounting bracket 31 .

When the first engaging portion 72c of the hook portion 72 is engaged with the first engaged portion 37, the inclined surface 72d of the first engaging portion 72c contacts the inclined surface 37d of the first engaged portion 37. This abuts and restricts the downward movement of the mounting spring 71 . Similarly, when the second engaging portion 73 is engaged with the second engaged portion 33, the inclined surface 73c of the second engaging portion 73 contacts the inclined surface 33c of the second engaged portion 33. Thus, the downward movement of the mounting spring 71 is restricted.

Also, as shown in FIG. 7C, the length dimension (width dimension) between the inner tip of the inclined surface 33c and the inner tip of the inclined surface 37d of the mounting bracket 31 is L2. That is, the length dimension L2 is the dimension of the shortest distance between the second engaged portion 33 and the first engaged portion 37 . As shown in FIG. 9(c), the length dimension (width dimension) between the intermediate portion of the curved portion 73b described later and the distal end portion of the curved portion 72b in the mounting spring 71 is L1, and the distal end portion of the base portion 73a described later is L1. and the inner tip of the inclined surface 72d is L3. That is, the length dimension L1 is the dimension of the longest distance between the hook portion 72 and the second engaging portion 73 . The length dimension L3 is the dimension of the shortest distance between the first engaging portion 72c and the second engaging portion 73. As shown in FIG. The mounting spring 71 is engaged with the mounting bracket 31 by satisfying the condition of L3<L2<L1 in each of the dimensions L1, L2, and L3.

Further, as shown in FIG. 9C, the width dimension between the inclined surface 72e of the first engaging portion 72c and the tip portion of the base portion 72a is L4, and as shown in FIG. The thickness dimension of 36 is set to L5. The hook portion 36 can be hooked on the hook portion 72 by setting the dimension relationship of L5<L4 in the dimensions of L4 and L5.

The second engaging portion 73 has a base portion 73a and a curved portion 73b. The base portion 73 a has a substantially plate shape and extends substantially perpendicularly from the other end of the connecting portion 74 . The curved portion 73b is a plate-like portion that extends from the tip of the base portion 73a and protrudes toward the opposite side of the hook portion 72 facing the second engaging portion 73 and has a substantially arc shape in a side view. The second engaging portion 73 engages the second engaged portion 33 of the mounting bracket 31 .

The shade 81 is attached so as to cover the irradiation surface side of the light source portion 51 attached to the light source attachment portion 42a, and transmits and diffuses the light from the light source portion 51 to form an emission surface. The shade 81 is an elongated member having a substantially arcuate cross section. The total longitudinal length of the shade 81 is substantially the same as the total longitudinal length of the base member 42 . The shade 81 is made of translucent (for example, milky white) acrylic resin material or the like.
In addition, the shape of the shade is not limited to the shape of this embodiment. For example, the shade may have a semicircular cross section, a rectangular cross section, or a trapezoidal cross section.

Specifically, as shown in FIG. 6, the shade 81 is arranged to face the light source unit 51, and has a facing surface portion 82 that covers the irradiation surface side of the light source unit 51, and both ends of the facing surface portion 82 in the short direction. It has a pair of side portions 83 extending upward and covering the side surfaces of the light source portion 51 .
The facing surface portion 82 is an arc-shaped portion in a cross-sectional view, and is convexly curved in a direction away from the light source portion 51 . The side surface portion 83 includes a flat portion 84 arranged along the longitudinal direction of the shade, and a pair of groove portions arranged between one end of the flat portion 84 in the short direction and both ends of the opposite surface portion 82 in the short direction. 85. The groove portion 85 is formed continuously along the longitudinal direction of the shade 81 . By providing the groove portion 85 in the side surface portion 83 in this manner, the operator can easily grasp the light source unit 41 by hand when removing the light source unit 41 from the main unit 21 .

Furthermore, compared to a configuration in which the groove portion 85 is not provided in the side portion 83, the height dimension of the flat portion 84 is smaller, so the height dimension of the side portion 83 is visually felt smaller, and the shade 81 and the light source unit 41 are looks thin. That is, the shade 81 is formed with one line-shaped groove 85 on the side surface of the shade 81 when viewed from the arrow X direction in FIG. 6, for example. By forming the linear grooves 85, even the relatively large shade 81 and light source unit 41 can be visually thin and stylish, which is a design effect.
Further, since the shade 81 has the flat portion 84 on the side portion 83 , the light from the light source portion 51 can be easily guided sideways, and the light can be distributed around the main unit 21 as well. As a result, the ceiling surface C becomes brighter, and the feeling of brightness of the entire space is obtained.

Also, the pair of side surface portions 83 are arranged parallel to each other. For example, when the pair of side portions are formed to have a substantially "<"-shaped cross section, the rigidity of the side portions is low. Therefore, if the operator pushes the bottom of the shade upward by hand when attaching the light source unit to the main unit, there is a possibility that the side of the shade (the "<"-shaped part) will bend and be damaged. be. In order to prevent the shade of such a shape from being damaged, there is a method of increasing the rigidity of the shade by increasing the thickness of the side wall of the shade.

On the other hand, by making the side portions 83 substantially planar and arranging them parallel to each other as in the present embodiment, the rigidity of the side portions 83 can be increased without lowering the light efficiency. Therefore, even if an operator pushes up the lower surface of the shade 81 by hand when attaching the light source unit 41 to the main body unit 21, the side part 83 is hard to bend, so that the shade 81 can be prevented from being damaged.

Moreover, the side surface portion 83 does not protrude sideways from the recessed portion 22 (the pair of side wall portions 22 b ) of the main unit 21 . For example, if the shade protrudes sideways, a gap (space) is created between the main unit and the shade, and dust tends to accumulate on the upper surface (mounting surface side) of the protruding part, and the dust casts a shadow on the ceiling surface C. I can do it. On the other hand, in this embodiment, since the side surface portion 83 does not protrude sideways, there is no portion where dust accumulates.

Further, in the case where the side surface portion 83 is not provided with the flat surface portion 84, for example, if a curved depression is provided on the entire pair of side surface portions, the rigidity of the side surface portion will be low. Therefore, if an operator pushes up the lower surface of the shade by hand when attaching the light source unit to the main body unit, the side portion of the shade may be bent and damaged. In order to prevent the shade of such a shape from being damaged, there is a method of increasing the rigidity of the shade by increasing the thickness of the side wall of the shade.
On the other hand, the rigidity of the side portions 83 can be increased by making the side portions 83 substantially planar and arranging them parallel to each other as in the present embodiment. Therefore, even if an operator pushes up the lower surface of the shade 81 by hand when attaching the light source unit 41 to the main body unit 21, the side part 83 is hard to bend, so that the shade 81 can be prevented from being damaged.

The lateral ends (side surfaces 83 ) of the shade 81 do not protrude laterally beyond the recess 22 (side walls 22 b ) of the main unit 21 . That is, in this embodiment, in order to accommodate the light source unit 41 (shade 81) in the concave portion 22 of the main unit 21, the width of the shade 81 in the widthwise direction is slightly smaller than the widthwise dimension of the concave portion 22. It is configured. Therefore, the upper end of the side portion 83 of the shade 81 is arranged close to the side wall portion 22b of the recess 22 . The side surface portion 83 of the shade 81 does not overlap the inclined surface portion 25 of the main unit 21 in plan view.

Further, when the light source unit 41 is attached to the main body unit 21, the ends of the shade 81 in the short direction are not engaged with the main body unit 21, and the end caps 91 are attached to both ends of the main body unit 21 in the longitudinal direction. By engaging with (the end member 26 ), the light source unit 41 can be vertically positioned with respect to the main body unit 21 .

As shown in FIG. 16 , the groove portion 85 includes a first surface 86 that extends obliquely downward from the lower end of the flat portion 84 toward the inner side of the shade 81 in the lateral direction, and a first surface 86 extending from the tip of the first surface 86 toward the shade 81 . and a second surface 87 extending obliquely downward toward the outside in the lateral direction of the . The groove portion 85 is a space formed by the first surface 86 and the second surface 87 facing each other. The second surface 87 is inclined with respect to the ceiling surface C when the lighting device 11 is attached to the ceiling surface C, for example. The ends of the first surface 86 and the second surface 87 are connected to form a bottom 88 of the groove 85 . The cross-sectional shape of the bottom portion 88 is preferably formed so that the first surface 86 and the second surface 87 form an acute angle. By configuring the groove portion 85 in this manner, the bending rigidity (bending strength) of the shade 81 in the longitudinal direction can be increased. Moreover, when manufacturing the shade 81, for example, when the shade 81 is manufactured by extrusion molding, deformation can be suppressed even in a soft state immediately after extrusion molding.

In addition, since the groove portion 85 is provided with the second surface 87 , when the worker puts his or her fingertip into the groove portion 85 when removing the light source unit 41 from the main unit 21 , the presence of the second surface 87 causes the fingertip to be pulled. Since it is easy to hang, the light source unit 41 can be more easily removed.

The groove portion 85 has a distal end portion 89 that protrudes sideways from both ends of the second surface 87 and the opposing surface portion 82 in the short direction. The distal end portion 89 is configured so as not to protrude laterally beyond the flat portion 84 . As a result, the shade 81 as a whole can be given a neat design with little unevenness. Further, by providing such a tip portion 89, the bending rigidity (bending strength) of the shade 81 in the longitudinal direction can be increased. Moreover, when manufacturing the shade 81, for example, when the shade 81 is manufactured by extrusion molding, deformation can be suppressed even in a soft state immediately after extrusion molding.

The groove portion 85 is provided along the longitudinal direction so as to be positioned at the boundary portion between the side surface portion 83 and the facing surface portion 82 . That is, the groove portion 85 is provided so as to be positioned near the vertex portion (near the ridge portion) where the side surface portion 83 and the facing surface portion 82 intersect. This makes it possible to make the groove portion 85 inconspicuous when the lighting device 11 is viewed from below.

As shown in FIG. 17 , a pair of end caps 91 are attached to both ends of the shade 81 in the longitudinal direction. A pair of end caps 91 block a pair of openings formed at a pair of longitudinal ends of the shade 81 . The end cap 91 is made of the same material as the shade 81 . Note that the end cap 91 may be made of a material different from that of the shade 81 . Although FIGS. 19 to 22 show one end cap 91 of the pair of end caps 91, the configuration of the other end cap 91 is the same as the configuration of the one end cap 91. Description is omitted.

The end cap 91 has a base portion 92, an extension portion 93, and a guide portion 94, as shown in FIGS. The base portion 92 has a bottomed shape and covers the openings at both longitudinal ends of the shade 81 . The extending portion 93 has a flat plate shape and extends in a direction substantially orthogonal to both longitudinal end surfaces of the shade 81 . The extending portion 93 extends from the upper end of the base portion 92 so as to cover the upper surface of the end portion in the longitudinal direction of the light source mounting portion 42a. The guide portion 94 is provided so as to protrude upward from the upper surface of the extension portion 93 .

The guide portion 94 connects a pair of side wall portions 94a that extend upward in a substantially trapezoidal shape when viewed from the side, an inclined surface portion 94b that connects the back sides of the pair of side wall portions 94a, and the top side of the pair of side wall portions 94a. and a top surface portion 94c. When the end caps 91 cover the openings at both longitudinal ends of the shade 81 to which the base member 42 is assembled, the guide portions 94 form spaces S in which the wires 63 can be arranged (see FIG. 22). The space S is a space surrounded by the side wall portion 94a, the inclined surface portion 94b, and the top surface portion 94c.

As shown in FIG. 5 , a pair of end caps 91 are attached to both longitudinal ends of the shade 81 . A pair of end caps 91 block a pair of openings formed at a pair of longitudinal ends of the shade 81 . Also, in the lighting fixture 11 in which the light source unit 41 is attached to the main body unit 21 , the end cap 91 is locked by the end member 26 . In addition, as shown in FIG. 6 , in the lighting device 11 , both ends of the shade 81 in the short direction are partly housed in the recesses 22 . The end cap 91 is made of the same material as the shade 81 . Note that the end cap 91 may be made of a material different from that of the shade 81 .

Next, a procedure for attaching the light source unit 41 to the main unit 21 will be described with reference to FIGS. 10 to 13. FIG.
First, when attaching the light source unit 41 to the main unit 21 fixed to the ceiling surface C from below the main unit 21 (see FIG. 10), the operator attaches the tip of the hook portion 72 of the mounting spring 71 of the light source unit 41. (the first engaging portion 72c) is inserted into the through hole 38 of the mounting bracket 31 of the main unit 21, and the hook portion 72 is hooked on the hook portion 36 (see FIG. 11). In this case, the light source unit 41 is suspended below the main unit 21 in an inclined state so that the second engaging portion 73 side of the mounting spring 71 faces downward (this state is referred to as a temporarily suspended state).

When the light source unit 41 is temporarily suspended as shown in FIG. 11, the position of the light source unit 41 is stable even if the operator does not support the light source unit 41 by hand. The work of connecting the wires to the terminal block 62 can be performed. In addition, the terminal block 62 is provided with a connection terminal having a gap narrower than the thickness of the power line so that the power line cannot be easily pulled out after connection, and the power line cannot be connected unless the power line is inserted with a relatively strong force. often configured. Therefore, in many cases, a worker uses both hands to connect the power line to the terminal block 62 . By temporarily suspending the light source unit 41 in this way, the worker can perform the mounting work and the electrical connection work of the light source unit 41 by himself. On the other hand, in the case of lighting fixtures where the light source unit cannot be temporarily suspended, one worker holds the light source unit by hand and supports it so that it does not fall, while the other worker uses both hands to pull the power cable. Since the work of connecting to the terminal block must be performed, at least two workers are required, resulting in poor work efficiency.

Next, as shown in FIG. 12, the operator lifts the second engaging portion 73 side of the mounting spring 71 of the light source unit 41 to place the light source unit 41 in a substantially horizontal state. Then, the light source unit 41 is pushed upward toward the main body unit 21 while keeping the light source unit 41 in a substantially horizontal state. Then, the operator engages the first engaging portion 72 c of the mounting spring 71 with the first engaged portion 37 of the mounting bracket 31 and engages the second engaging portion 73 of the mounting spring 71 with the second engaging portion 73 of the mounting bracket 31 . 2 Engage with the engaged portion 33 . That is, the first engaging portion 72c and the second engaging portion 73 are engaged with the first engaged portion 37 and the second engaged portion 33 by moving the light source unit 41 upward. Specifically, the curved portion 73b contacts the bent portion 33b immediately before the first engaging portion 72c and the second engaging portion 73 engage with the first engaged portion 37 and the second engaged portion 33. , the curved portion 72b contacts the bent portion 37c. By raising the light source unit 41 from the contact state, the curved portion 73b moves along the bent portion 33b, and the second engaging portion 73 is elastically deformed inward (toward the hook portion 72). Similarly, the curved portion 72b moves along the bent portion 37c, and the hook portion 72 is elastically deformed inward (toward the second engaging portion 73). When the curved portion 73b overcomes the V-shaped portion of the bent portion 33b, the second engaging portion 73 returns to its original shape, and the inclined surface 73c contacts the inclined surface 33c. Similarly, when the curved portion 72b climbs over the V-shaped portion of the bent portion 37c, the hook portion 72 returns to its original shape, and the inclined surface 72d contacts the inclined surface 37d. As a result, the light source unit 41 is attached to the recess 22 with its upper end side accommodated in the recess 22 (see FIG. 13).

As described above, the curved portion 73b contacts the bent portion 33b immediately before the first engaging portion 72c and the second engaging portion 73 engage with the first engaged portion 37 and the second engaged portion 33. , the curved portion 72b contacts the bent portion 37c. At this time, the curved portion 73b is in line contact with the inclined surface 33d (see FIG. 12) of the bent portion 33b, and the curved portion 72b is in line contact with the inclined surface 37e (see FIG. 12) of the bent portion 37c. do. As a result, for example, compared to the case where the surfaces are in surface-to-surface contact with each other, the friction is less and smooth engagement can be achieved. In addition, since the curved portions 72b and 73b are curved (convex curved surfaces), the curved portions 72b and 73b are slightly bent in the lateral direction of the light source unit 41 with respect to the corresponding inclined surfaces 37e and 33d. Even if it moves, the curved portion 72b and the curved portion 73b are received by the inclined surface 37e and the inclined surface 33d. In other words, even if the light source unit 41 moves in the lateral direction due to slight hand movement while the worker is holding the light source unit 41, it is allowed within a predetermined range, and the mounting spring 71 is engaged with the mounting bracket 31. can be combined.
It should be noted that "line contact" includes not only exactly linear contact, but also substantially linear contact with a predetermined width.

When the body unit 21 and the light source unit 41 are in the state shown in FIG. 13, the inclined surface 72d is in contact with the inclined surface 37d, and the inclined surface 73c is in contact with the inclined surface 33c. In the state shown in FIG. 13, the weight of the light source unit 41 does not allow the curved portion 72b to climb over the V-shaped portion of the bent portion 37c, and the hook portion 72 moves inward (toward the second engaging portion 73). No elastic deformation. Similarly, the curved portion 73b cannot get over the V-shaped portion of the bent portion 33b, and the second engaging portion 73 does not elastically deform inward (toward the hook portion 72). As a result, the weight of the light source unit 41 alone does not cause the mounting spring 71 to come off from the mounting bracket 31 , and the light source unit 41 is stably held by the main unit 21 .

When removing the light source unit 41 from the main unit 21, for example, the operator grasps both ends of the light source unit 41 (shade 81) shown in FIG. By pulling out, the first engaging portion 72c and the second engaging portion 73 can be disengaged from the first engaged portion 37 and the second engaged portion 33 to release the engagement. Specifically, when the operator applies force to pull the light source unit 41 (shade 81) downward, the inclined surface 73c overcomes the V-shaped portion of the bent portion 33b, and the second engaging portion 73 is pulled out. It elastically deforms inward (toward the hook portion 72). Similarly, the curved portion 72b rides over the V-shaped portion of the bent portion 37c, and the hook portion 72 is elastically deformed inward (toward the second engaging portion 73). In this way, when the light source unit 41 is moved downward from the engaged state shown in FIG. 13, the mounting spring 71 is elastically deformed, and the mounting spring 71 and the mounting bracket 31 are disengaged.

When the mounting spring 71 and the mounting bracket 31 are disengaged from each other, the mounting spring 71 returns to its original shape from its elastically deformed state, and the hook portion 72 passes through the through hole 38 . Specifically, the base portion 72a side of the mounting spring 71 is located inside the extending portion 32 (the side facing the second engaged portion 33), and the first engaging portion 72c side of the mounting spring 71 is located inside the extending portion 32. (the side opposite to the side facing the second engaged portion 33).
When the light source unit 41 is further lowered, the hook portion 36 enters the inner peripheral side of the curved portion 72b, and the hook portion 72 is hooked on the hook portion 36. As shown in FIG.

When the light source unit 41 is moved downward in this manner, the hook portion 72 is caught by the hook portion 36 as shown in FIG. 12, and the light source unit 41 is temporarily suspended from the main unit 21 as shown in FIG. state. After that, as shown in FIG. 10 , the light source unit 41 can be removed from the main unit 21 by removing the hook portion 72 from the hook portion 36 . With such a configuration, even if an operator accidentally drops the light source unit 41 after the engagement between the mounting spring 71 and the mounting bracket 31 is released when the light source unit 41 is removed from the main unit 21, the hook portion 72 is still attached to the hook portion. The light source unit 41 can be prevented from falling to the ground by being caught by the 36 and being in a temporarily suspended state. In addition, since the light source unit 41 can be placed in the temporarily suspended state in this way, wiring work and repair/inspection work can be easily performed.

As shown in FIG. 9(c), the curved portion 72b of the hook portion 72 has a curved inner peripheral surface and a space S1 that is substantially circular in side view. For example, when removing the light source unit 41 from the main body unit 21, even if the light source unit 41 is accidentally dropped after the engagement between the mounting spring 71 and the mounting bracket 31 is released, the hook 36 of the mounting bracket 31 collides with the space S1. The curved portion 72b is configured to be less likely to come off from the hook portion 36. For example, when the space S1 is a narrow space with an elongated shape in a side view, the hook 36 cannot move in the short direction (width direction) of the light source unit 41, and the light source unit 41 does not bounce when dropped. It becomes difficult to absorb it, and it becomes easy to come off from the hook part 36. - 特許庁

The mounting spring 71 has a hook portion 72 and a second engaging portion 73. Both ends of the connecting portion 74 are fixed ends, and upper ends of the hook portion 72 and the second engaging portion 73 are free. It constitutes a cantilever spring with an end. Since the hook portion 72 is formed such that the base portion 72a and the first engaging portion 72c face each other through the curved portion 72b, the bending rigidity (difficulty in bending) of the leaf spring is greater than that of the second engaging portion 73. growing. That is, the hook portion 72 is configured as a leaf spring so that bending requires more force than the second engaging portion 73 . With this configuration, when the mounting spring 71 is engaged with the mounting bracket 31, the second engaging portion 73, which has a smaller bending rigidity than the hook portion 72, contacts the bent portion 33b and begins to bend first. Then, the hook portion 72 (curved portion 72b) contacts the bent portion 37c and begins to bend. Thus, by configuring the hook portion 72 of the mounting spring 71 and the second engaging portion 73 to have different flexural rigidity, when the operator engages the mounting spring 71 with the mounting bracket 31, a large force is applied. do not need. Further, when the mounting spring 71 is engaged with the mounting bracket 31 , the first engaging portion 72 c of the hook portion 72 is firmly attached to the bent portion 37 c of the first engaged portion 37 due to the relatively large bending rigidity of the hook portion 72 . , the mounting spring 71 is less likely to come off the mounting bracket 31, and the light source unit 41 is stably held by the main unit 21. As shown in FIG.

As shown in FIG. 10 , the mounting bracket 31 may be configured such that the tip 36 a thereof fits into the recess 22 of the main unit 21 . That is, the mounting bracket 31 may be configured such that its vertical height dimension H1 (see FIG. 7) is smaller than the height dimension (depth dimension) D of the recess 22 . As a result, the mounting metal fittings 31 do not protrude outward from the concave portion 22 of the main unit 21, so that the possibility of the mounting metal fittings 31 coming into contact with the surroundings during transportation of the main unit 21 and being damaged or rattling can be reduced. can be done. Furthermore, the body unit 21 can be configured compactly, and space saving can be achieved when the body unit 21 is packed.
Further, as shown in FIG. 10, the mounting spring 71 may be configured such that its vertical height dimension H2 is smaller than the height dimension H3 of the power supply device 61, for example. As a result, the light source unit 41 can be configured compactly, and space saving can be achieved when the light source unit 41 is packed.

The mounting bracket 31 or the mounting spring 71 according to the present embodiment may be configured to be split (see FIGS. 23 and 24) or separable at the intermediate portions (for example, central portions) of the respective connecting portions 34 and 74 . As a result, for example, even when the width dimension of the light source unit 41 is changed, the divided mounting brackets 31 or the mounting springs 71 can be arranged appropriately according to the width dimension. .

The mounting spring 71 may be configured to have a pair of hook portions 72 by providing a hook portion 72 instead of the second engaging portion 73 regardless of whether the mounting spring 71 is integrated or separated. . As a result, since the right and left mounting springs can be used in common, the operator will not mistake the mounting direction of the mounting springs.

In this embodiment, the mounting spring 71 is attached to the light source unit 41, and the mounting bracket 31 is attached to the main unit 21. A configuration in which the spring 71 is attached may be employed.

As described above, the mounting brackets 31 of the present embodiment face the through hole 27 provided in the longitudinal center of the upper surface portion 22a of the main unit 21, and are arranged at equal intervals from the through hole 27. be done. Similarly, the mounting springs 71 are also arranged at equal intervals from the central portion of the light source unit 41 . However, the mounting positions of the mounting bracket 31 and the mounting spring 71 corresponding thereto are not particularly limited. For example, a configuration in which the mounting positions of the pair of mounting brackets 31 and the pair of mounting springs 71 are arranged at asymmetrical positions in the longitudinal direction rather than at equal intervals from the longitudinal centers of the main body unit 21 and the light source unit 41 of the lighting device 11. may be By configuring in this way, it is possible to prevent the operator from attaching the light source unit 41 to the main unit 21 in the wrong orientation.

Further, for example, as a modification of the mounting spring 71 of the present embodiment, as in a mounting spring 71A shown in FIG. They may be placed in asymmetrical positions. That is, the through holes 75, 75 may be arranged at positions where the respective positions of the through holes 75, 75 are not rotationally symmetrical when the mounting spring 71 is rotated 180 degrees around the center C of the connecting portion 74. By configuring in this way, it is possible to prevent the worker from mounting the mounting spring 71 and the mounting bracket 31 on the base member 42 in the wrong mounting direction.

Further, in this embodiment, the positions of the through holes 75 for fastening the mounting springs 71 with screws, ie, the positions of the screws, are configured so as not to overlap the position of the board 54 of the light source section (LED module board) 51 . Accordingly, even if the screws for fixing the mounting spring 71 pass through the base member 42 , the screws can be prevented from interfering with the substrate 54 . By preventing the screws from interfering with the substrate 54 , the substrate 54 may be damaged by the tips of the screws, or the substrate 54 may be lifted by the screws to reduce the contact area between the substrate 54 and the base member 42 . It is possible to prevent deterioration of heat dissipation.

Further, as shown in FIG. 15, instead of the mounting bracket 31 of the present embodiment, a configuration may be adopted in which portions for mounting the mounting springs 71 are directly formed on the pair of side wall portions 22b of the concave portion 22 of the main unit 21. FIG. Specifically, a hooking portion 23 for hooking the hook portion 72 and an engaged portion 28 for engaging the first engaging portion 72c of the hook portion 72 are provided on one side wall portion 22b. A second engaged portion 29 with which the second engaging portion 73 is engaged is provided on the other side wall portion 22b. As a result, the mounting bracket 31 can be omitted, so the number of parts can be reduced.

Also, the mounting spring 71 (at least one of the two mounting springs 71 in this embodiment) may be integrally formed with the power supply case of the power supply device 61 . As a result, the mounting spring 71 can be omitted, so the number of parts can be reduced.

In the lighting fixture 11 according to the present embodiment described above, the mounting bracket 31 arranged in the recess 22 of the main unit 21 and the light source unit 41 are arranged on the opposite side of the light source unit 51 and can be attached to the mounting bracket 31. The mounting spring 71 of the light source unit 41 has a hook-shaped hook portion 72, the mounting bracket 31 has a hook portion 36 for hooking the hook portion 72, and the light source unit 41 is attached to the main unit 21. The hook portion 72 is configured to be hooked on the hook portion 36 when it is moved in a direction away from the concave portion 22 to be removed. That is, since the structure for preventing the light source unit 41 from falling, which is composed of the hook portion 72 and the hook portion 36, is arranged in the concave portion 22 of the main unit 21, the main unit 21 can be made smaller.

The shape of the lighting fixture 11 of this embodiment is an example, and is not limited to the shape of this embodiment. For example, if the lighting device 11 has a shape other than an elongated shape, the shape may be changed accordingly. Also, the light source unit can be appropriately deformed according to the shape of the main unit.

REFERENCE SIGNS LIST 11 luminaire 21 main unit 22 recess 31 mounting bracket 36 hook 41 light source unit 51 light source 71 mounting spring 72 hook 81 shade 82 facing surface 83 side surface 84 flat surface 85 groove

Claims (3)

a light source unit having a light source section;
A lighting fixture comprising a body unit that holds the light source unit,
The light source unit has an elongated shade that covers the light source,
The shade is
a facing surface portion arranged to face the light source portion and covering the irradiation surface side of the light source portion;
a pair of side portions extending from both ends in the short direction of the facing surface portion and covering side surfaces of the light source portion;
The side surface portion includes a flat portion arranged along the longitudinal direction of the shade, and a pair of groove portions arranged between one end of the flat portion in the short direction and both ends of the opposite surface portion in the short direction. have
The lighting fixture , wherein the groove is provided so as to be positioned at a boundary portion between the side surface portion and the facing surface portion along a longitudinal direction . The lighting fixture according to claim 1, wherein said pair of side portions are parallel to each other. A light source unit having a light source,
The light source unit has an elongated shade that covers the light source,
The shade is
a facing surface portion arranged to face the light source portion and covering the irradiation surface side of the light source portion;
a pair of side portions extending from both ends in the short direction of the facing surface portion and covering side surfaces of the light source portion;
The side surface portion includes a flat portion arranged along the longitudinal direction of the shade, and a pair of groove portions arranged between one end of the flat portion in the short direction and both ends of the opposite surface portion in the short direction. have
The light source unit , wherein the groove portion is provided so as to be positioned at a boundary portion between the side surface portion and the facing surface portion along the longitudinal direction .

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