JP7479008B2 - Lighting fixtures and light source units - Google Patents

Description

This disclosure relates to a lighting fixture and a light source unit, and more specifically to a lighting fixture in which the light source unit and the fixture body are configured to be detachable, and the light source unit.

As a conventional example, the lighting device (light source unit and lighting fixture) described in Patent Document 1 is exemplified. The lighting device described in Patent Document 1 includes an elongated light source unit having a light-emitting element serving as a light source, an elongated lighting fixture having a fixture body to which the light source unit is attached, and a fixture-side spring that fixes the light source unit to the fixture body. The fixture body is formed into a concave shape by a bottom and two side parts that face each other. The tip of each of the two side parts opposite the bottom is bent to form an arc toward the internal space of the fixture body, and forms a convex part that is bent so that the edge faces the side part. The fixture-side spring is formed of an elastic body, and has spring engagement parts that engage with the convex parts of the two side parts at their ends, and a spring arm part that engages with the light source unit at its center.

JP 2020-24806 A

However, in the lighting device described in Patent Document 1, if a gap occurs at the boundary between the light source unit and the lighting fixture (the fixture body), the external appearance may be impaired.

The objective of this disclosure is to provide a lighting fixture and light source unit that can improve the appearance.

A lighting fixture according to an aspect of the present disclosure includes a long fixture body, a long light source unit, and an attachment member for detachably attaching the light source unit to the fixture body. The light source unit includes a long light source module, a support member for supporting the light source module , and a power supply unit . The light source module includes a long substrate and a plurality of light emitting elements arranged on a surface of the substrate. The support member includes a main portion formed in a long plate shape and facing the back surface of the substrate, and a pair of side wall portions standing on the back surface side of the substrate from a pair of side ends along the longitudinal direction of the main portion. The attachment member includes one or more attachment springs arranged on the fixture body and a hook portion on which a part of the attachment spring is hooked. The hook portion is provided on an inner surface of the side wall portion where the pair of side wall portions face each other. The power supply unit includes a hook piece that is hooked on the hook portion.

The light source unit according to one aspect of the present disclosure is used in the lighting fixture and includes the light source module and the support member.

The lighting fixture and light source unit disclosed herein have the advantage of improving the appearance.

FIG. 1 is a perspective view of a lighting fixture according to an embodiment of the present disclosure. FIG. 2 is a front view of the above lighting fixture. FIG. 3 is a side view of the above lighting fixture. FIG. 4 is a partially cutaway exploded perspective view of the lighting fixture. FIG. 5 is an exploded perspective view of the above lighting fixture. FIG. 6 is a plan view of the above lighting fixture. FIG. 7 is a front view of the fixture body in the above lighting fixture. FIG. 8 is an exploded perspective view of the lighting fixture of the above with a portion of the fixture body omitted. FIG. 9 is a front view of the lighting fixture of the above with a part of the fixture body omitted. FIG. 10 is a plan view of a light source unit in the above lighting fixture. FIG. 11 is a cross-sectional view of the above lighting fixture. FIG. 12 is a perspective view of an end member in the lighting fixture. FIG. 13 is an exploded perspective view of an end member in the lighting fixture. FIG. 14 is an exploded perspective view of an end member in the lighting fixture. FIG. 15 is a side view of the lighting fixture of the above with the end member omitted. FIG. 16 is a cross-sectional view of the above lighting fixture with a portion thereof omitted. FIG. 17 is a front view of the above lighting fixture with a portion thereof omitted. FIG. 18 is an exploded perspective view of a modification of the lighting fixture of the above embodiment, with a portion of the fixture body omitted. FIG. 19 is a front view of a modification of the lighting fixture of the above with a portion of the fixture body omitted.

Embodiments of the present disclosure will be described in detail with reference to the drawings. However, each figure described in the following embodiments is a schematic diagram, and the ratios of the sizes and thicknesses of each component do not necessarily reflect the actual dimensional ratios. Note that the configurations described in the following embodiments are merely examples of the present disclosure. The present disclosure is not limited to the following embodiments, and various modifications are possible depending on the design, etc., as long as the effects of the present disclosure can be achieved.

(1) Overview of an embodiment of the present disclosure A lighting device A1 according to an embodiment of the present disclosure includes a long device body 1, a long light source unit 2, and a mounting member 3 for detachably mounting the light source unit 2 to the device body 1. Note that "long" in this disclosure means a state in which the length dimension in the longitudinal direction is several times to several tens of times the length dimension in the lateral direction.

The light source unit 2 has a long light source module 20 and a support member 21 that supports the light source module 20. The light source module 20 has a long substrate 200 and a number of light-emitting elements arranged on the surface of the substrate.

The support member 21 has a main portion 210 formed in a long plate shape facing the back surface of the substrate 200, and a pair of side wall portions 211 that stand up from a pair of side ends along the longitudinal direction of the main portion 210 toward the back surface side of the substrate 200. The mounting member 3 has one or more mounting springs 30 arranged on the device body 1, and a hook portion 31 on which a part of the mounting spring 30 is hooked. The hook portion 31 is provided on the inner surface of the side wall portions 211 where the pair of side wall portions 211 face each other.

In the lighting fixture A1 according to the embodiment of the present disclosure, a part of the mounting spring 30 arranged on the fixture body 1 is hooked onto a hook portion 31 provided on the inner surface of a pair of side wall portions 211 of the support member 21, and the light source unit 2 is attached to the fixture body 1.

In the lighting fixture A1 according to the embodiment of the present disclosure, the light source unit 2 is attached to the fixture body 1 so that the fixture body 1 is housed between a pair of side wall portions 211, making it possible to make the boundary between the light source unit 2 and the fixture body 1 less noticeable. As a result, the lighting fixture A1 according to the embodiment of the present disclosure can achieve an improved appearance compared to conventional examples such as the lighting device described in Patent Document 1.

(2) Detailed Description of the Embodiments (2-1) Lighting Fixture As shown in Figs. 1 to 6, a lighting fixture A1 according to an embodiment of the present disclosure (hereinafter, abbreviated as lighting fixture A1) includes a long fixture body 1, a long light source unit 2, and a mounting member 3 for detachably mounting the light source unit 2 to the fixture body 1. The lighting fixture A1 is directly attached to, for example, a ceiling of an office room in an office building. In the following description, unless otherwise specified, the up-down, front-back, and left-right directions indicated by arrows in Fig. 1 are defined as the up-down, front-back, and left-right directions of the lighting fixture A1 and the light source unit 2, respectively.

(2-2) Device Body The device body 1 has a bottom plate 10 formed in a long rectangular shape, and a pair of side plates 11 rising upward from both ends (front end and rear end) along the longitudinal direction (left-right direction) of the bottom plate 10 (see FIG. 4). The bottom plate 10 and the pair of side plates 11 are integrally formed by bending a single metal plate. In other words, the pair of side plates 11 have the function of improving the strength of the bottom plate 10.

The bottom plate 10 has two first wire holes 12, two second wire holes 13, two bolt insertion holes 14, and two hook holes 18 (see Figures 4 and 6).

The two first wire holes 12 are circular holes provided at both ends (left and right ends) of the bottom plate 10 in the longitudinal direction. A power cable 80 connected to an external power source (e.g., a commercial power system) is inserted into one of the two first wire holes 12 (see FIG. 7). A bushing 120 made of an annular synthetic resin molded body is fitted into each first wire hole 12, and the bushing 120 protects the power cable 80 from the edge of the first wire hole 12 of the bottom plate 10.

The power cable 80 is connected to a power terminal block 15 attached to the underside of the bottom plate 10 (see FIG. 7). The power terminal block 15 is attached near the first wire hole 12 of the bottom plate 10. The power cable 80 is electrically connected to the two wires 17 via the power terminal block 15.

The two electric wires 17 connected to one power terminal block 15, the two electric wires 17 connected to the other power terminal block 15, and the two electric wires 17 connected to the plug connector 16 are each connected one by one by a closed end connector 82 (see FIG. 7). Of the three electric wires included in the power cable 80, one electric wire 17 (the ground electrode electric wire) is electrically connected to the bottom plate 10 of the device body 1 by a crimp terminal.

The two second wire holes 13 are oval holes provided between the longitudinal center of the bottom plate 10 and each of the first wire holes 12 (see FIG. 7). A signal cable connected to an external signal transmission source is inserted into one of the two second wire holes 13. The signal cable inserted into the second wire hole 13 is connected to a signal terminal block 52 (described later) provided in the light source unit 2. However, a bushing portion 43 of a function block 4 (described later) is fitted into each second wire hole 13, and the bushing portion 43 protects the signal cable from the edge of the second wire hole 13 of the bottom plate 10 (see FIG. 7).

The two bolt insertion holes 14 are oval holes provided between the power terminal block 15 and the second electric wire hole 13 of the bottom plate 10 (see FIG. 7). A hanging bolt protruding from the ceiling is inserted into each of the two bolt insertion holes 14. Then, the fixture body 1 is fixed to the ceiling by tightening a nut on the hanging bolt inserted into the bolt insertion hole 14.

The two hanging holes 18 are round holes provided closer to the center than the second electric wire hole 13 of the bottom plate 10 (see FIG. 7). The ends of two strings for temporarily hanging the light source unit 2 are inserted into these two hanging holes 18 and hooked.

(2-3) Mounting Members The instrument body 1 is provided with two mounting members 3. Each mounting member 3 has one mounting spring 30 (see Figs. 4 and 5). The mounting spring 30 has a pair of spring pieces 300 and a connecting piece 301 that connects the pair of spring pieces 300 together (see Fig. 8). The pair of spring pieces 300 and the connecting piece 301 are formed into a U-shape by bending a strip-shaped metal plate. The tip portion (lower end portion) of each spring piece 300 is bent into a V-shape, so that it is inclined inward toward the tip (lower end).

These two mounting springs 30 are fixed to the bottom plate 10 of the fixture body 1 by screwing. That is, the connecting piece 301 of each mounting spring 30 is screwed between the power terminal block 15 and the bolt insertion hole 14 on the bottom plate 10. Each of the pair of spring pieces 300 can be deformed (flexed) along the short side direction (front-back direction) of the fixture body 1.

(2-4) Functional Block The tool body 1 has two functional blocks 4 (see FIG. 4). Each functional block 4 has a guide member 40, a limiting member 41, a holding member 42, and a bushing portion 43 (see FIG. 8). The functional block 4 is composed of a synthetic resin molded body in which the guide member 40, the limiting member 41, the holding member 42, and the bushing portion 43 are integrally formed. However, the guide member 40, the limiting member 41, the holding member 42, and the bushing portion 43 may each be formed separately, or at least two of the members may be formed integrally.

The restricting member 41 is formed in a rectangular flat plate (see FIG. 8). The restricting member 41 is disposed on the inside of each pair of spring pieces 300 of the mounting spring 30. When each spring piece 300 is deformed (bent) inward, it comes into contact with the restricting member 41, thereby restricting the amount of deformation (bend) of each spring piece 300. In other words, the restricting member 41 can prevent the spring pieces 300 of the mounting spring 30 from plastically deforming.

The guide member 40 has four guide pieces 400 (see FIG. 8). The four guide pieces 400 are arranged one on each end of a pair of restricting members 41. In other words, the restricting member 41 is arranged between two guide pieces 400 arranged in the longitudinal direction (left-right direction) of the device body 1.

Each guide piece 400 is formed in a prism shape with a triangular tip (lower end). Each guide piece 400 is formed to a length such that, when the function block 4 is attached to the instrument body 1, the tip of each guide piece 400 is located further (lower) than the tip of the spring piece 300 of the mounting spring 30. However, the guide pieces may be formed in a U-shape by connecting the tips (lower ends) of two of the four guide pieces 400 that are aligned along the short side direction (front-to-back direction) of the instrument body 1.

The holding member 42 has a pair of first holding pieces 421, second holding pieces 422, and third holding pieces 423 (see Figs. 7-9). The pair of first holding pieces 421 are formed in the shape of long plates with one end in the longitudinal direction curved. The pair of first holding pieces 421 are configured to surround the bolt insertion hole 14 when viewed from the top and bottom when the function block 4 is attached to the instrument body 1. The pair of first holding pieces 421 are configured to form a space for wiring between the side plate 11 of the instrument body 1 and to hold the electric wire 17 arranged in the space. Thus, by the pair of first holding pieces 421 holding the electric wire 17, it is possible to suppress the occurrence of a problem such as the coating of the electric wire 17 being damaged by the hanging bolt inserted into the bolt insertion hole 14 (see Figs. 7 and 9).

The second retaining piece 422 is formed in a thin plate shape so as to straddle the tips (lower ends) of the pair of restricting members 41 (see Figs. 7-9). The second retaining piece 422 is configured to form a space for wiring between itself and the bottom plate 10 of the device body 1 and to retain the electric wire 17 arranged in that space (see Figs. 7 and 9).

The third holding piece 423 is formed in a generally L-shape (see FIG. 8). The third holding piece 423 is disposed on the opposite side of the restricting member 41 from the first holding piece 421 (the side adjacent to the power terminal block 15) (see FIG. 7). The third holding piece 423 is positioned below the electric wire 17 connected to the power terminal block 15 and is configured to hold the electric wire 17 (see FIGS. 7 and 9).

The bushing portion 43 has a main body portion 430 formed in an oval cylindrical shape, a flange portion 431 protruding from the lower end of the main body portion 430 to the outside of the main body portion 430, and a tongue piece 432 protruding from the tip of the flange portion 431 (see FIG. 8). A circular screw insertion hole 433 penetrates the tongue piece 432. The main body portion 430 is inserted into the second electric wire hole 13 when the function block 4 is attached to the device body 1 (see FIG. 7). In other words, the bushing portion 43 can protect the coating of the signal cable from the edge of the second electric wire hole 13 of the bottom plate 10 by the main body portion 430 inserted into the second electric wire hole 13.

The function block 4 has a plurality of claws 44 (see FIG. 8). One claw 44 is provided at the tip of the flange portion 431. The remaining two claws 44 are provided at the end of the guide member 40. A screw hole 100 is provided in the bottom plate 10 of the device body 1 near the second electric wire hole 13. In addition, a C-shaped hook groove 101 is provided in the bottom plate 10 between the mounting spring 30 and the power terminal block 15.

The function block 4 is attached to the device body 1 by hooking the claw 44 at the tip of the flange portion 431 onto the edge of the second wire hole 13, hooking the two claws 44 at the end of the guide member 40 onto the edges of both ends of the hook groove 101, and screwing the screw inserted into the screw insertion hole 433 of the tongue piece 432 into the screw hole 100.

(2-5) Light Source Unit The light source unit 2 includes a light source module 20, a support member 21, a cover 22, a power supply unit 5, and a pair of end members 6 (see FIGS. 4 and 5).

(2-5-1) Light Source Module The light source module 20 has two substrates 200 and a plurality of light emitting elements (LEDs 201) mounted on the surface (lower surface) of each substrate 200 (see FIG. 5). Each substrate 200 is formed in a long rectangular shape. Conductors for connecting the plurality of LEDs 201 are formed on the surface of each substrate 200. The conductors of the two substrates 200 are connected via connectors mounted on the longitudinal ends of each substrate 200.

Each of the multiple LEDs 201 is a packaged white LED for lighting. However, the light emitting element of the light source module 20 may be a light emitting element other than an LED, such as an organic electroluminescence element or a semiconductor laser element.

(2-5-2) Power supply unit The power supply unit 5 includes a power supply circuit 50 configured by a printed circuit and a power supply case 51 that houses the power supply circuit 50 (see FIG. 4 and FIG. 11). The power supply case 51 is formed in a long box shape with one surface (bottom surface) open. The power supply circuit 50 includes a rectifier circuit that rectifies the AC voltage supplied from an external power supply via an electric wire 54, a boost circuit that boosts and smoothes the pulsating voltage rectified by the rectifier circuit, a step-down circuit that steps down the DC voltage output from the step-up circuit, and a control circuit that controls the step-down circuit. The control circuit controls the step-down circuit so that the current (load current) supplied to the light source module 20 is made constant by matching it to a target value. In addition, the control circuit adjusts the target value of the load current according to a signal (dimming signal) input from a signal transmission source via a signal cable and a signal terminal block 52 to dim the light source module 20. The signal transmission source is, for example, a lighting controller installed on the wall of an office. A receptacle connector 55 connectable to the plug connector 16 of the device body 1 is attached to the tip of the electric wire 54 drawn out from the power supply case 51 (see FIG. 10).

(2-5-3) Support Member The support member 21 has a main portion 210 formed in a long plate shape, and a pair of side wall portions 211 standing upward from a pair of side ends (front end and rear end) along the longitudinal direction (left-right direction) of the main portion 210 (see FIG. 5). The pair of side wall portions 211 are formed in a long rectangular shape.

The support member 21 also has a positioning piece 212, a locking piece 213, a pair of cover mounting pieces 214, a pair of hooks 31, and a pair of protrusions 215 (see FIG. 11).

The positioning piece 212 is formed in a rectangular column shape that protrudes downward from the rear end of the lower surface of the main part 210 (see FIG. 11). The locking piece 213 is formed in an L-shape that protrudes downward from the front end of the lower surface of the main part 210. The positioning piece 212 and the locking piece 213 are each formed over the entire length of the main part 210 in the longitudinal direction so as to be parallel to each other along the longitudinal direction of the main part 210. The board 200 of the light source module 20 is inserted into the gap between the locking piece 213 and the main part 210, and the board 200 is locked to the locking piece 213 (see FIG. 11). The positioning piece 212 positions the board 200 in the front-rear direction of the main part 210. The board 200 is screwed to the main part 210 by a plurality of screws.

The pair of cover attachment pieces 214 are each formed in an L-shape and protrude downward from each side end along the longitudinal direction of the main portion 210 (see FIG. 11). A pair of attachment portions 222 of the cover 22 are hooked onto each cover attachment piece 214, as described below.

The pair of hooks 31 each protrude inward from approximately the center in the vertical direction on the inner surface of the pair of side wall portions 211 over the entire length of each side wall portion 211 in the longitudinal direction (see FIG. 11). However, the tip portion of each hook portion 31 is bent downward. The pair of hooks 31 hook onto the tip portions of the spring pieces 300 of the two mounting springs 30 attached to the appliance body 1. In other words, the pair of hooks 31, together with the mounting springs 30, constitute the mounting member 3.

The pair of protrusions 215 each protrude inward from the lower end portion of the inner surface of the pair of side wall portions 211 over the entire length of the side wall portions 211 in the longitudinal direction (see FIG. 11). Note that the main portion 210, the pair of side wall portions 211, the positioning piece 212, the locking piece 213, the pair of cover mounting pieces 214, the pair of hook portions 31, and the pair of protrusions 215 are preferably integrally formed by extrusion molding of a metal material such as an aluminum alloy.

(2-5-4) Cover The cover 22 has a front wall 220, a pair of side walls 221, and a pair of mounting parts 222 (see FIG. 5). The front wall 220 is formed in a long rectangular shape. The pair of side walls 221 are each formed in a long rectangular shape and protrude upward from both ends (front end and rear end) along the longitudinal direction of the front wall 220. The pair of mounting parts 222 are each formed in a long U-shape and protrude inward from the upper end of each side wall part 211 over the entire length of the side wall part 211 in the longitudinal direction. Here, the front wall 220, the pair of side wall parts 211, and the pair of mounting parts 222 are preferably formed integrally by extrusion molding of a synthetic resin having translucency, such as polycarbonate resin or acrylic resin. In addition, the cover 22 is preferably formed in a milky white color by mixing a filler into the synthetic resin material in order to diffuse the light emitted from the light source module 20.

The cover 22 is attached to the support member 21 by hooking the pair of mounting parts 222 one by one onto each of the pair of cover mounting pieces 214 of the support member 21 (see FIG. 11). The cover 22 attached to the support member 21 covers the light source module 20 attached to the underside of the main part 210.

(2-5-5) End Member The end member 6 has a cover end portion 60, an end cap portion 61, and a mounting fixture 62 (see FIGS. 12 to 14). The cover end portion 60 has a cylindrical portion 600, a wall portion 601, a protruding wall 602, a base 603, a pair of connecting portions 604, and a pair of pressing pieces 605.

The cylinder 600 is formed in a rectangular cylinder shape. The wall 601 is formed in a rectangular flat plate shape and is connected to one axial end of the cylinder 600 to close the axial end of the cylinder 600. A triangular prism-shaped mating protrusion 606 with the axial direction extending in the front-rear direction is provided on the upper surface of the wall 601 (see FIG. 13).

The protruding wall 602 is formed in a rectangular flat plate shape and protrudes upward from a position on the top surface of the tubular portion 600 near the wall portion 601. The base 603 is formed in a rectangular flat plate shape and is disposed parallel to the top surface of the tubular portion 600 from the upper end of the protruding wall 602.

The pair of connecting parts 604 are each formed in an inverted L-shape and protrude upward from both front and rear ends on the upper surface of the base 603 that are farther from the wall part 601. The pair of pressing pieces 605 are each formed in a rectangular flat plate shape and protrude along the axial direction of the tube part 600 from both front and rear ends of the upper part at the opening end of the tube part 600 (the end opposite the wall part 601). The tube part 600, the wall part 601, the protruding wall 602, the base 603, the pair of connecting parts 604, and the pair of pressing pieces 605 are integrally formed as a synthetic resin molding having translucency such as acrylic resin or polycarbonate resin. However, it is preferable that the cover end part 60 is formed in a milky white color by mixing a filler into the synthetic resin material in order to diffuse the light emitted from the light source module 20, similar to the cover 22.

The end cap portion 61 has a main body 610 having a hole 611 for passing wires through, and a lid 63 that is removably attached to the main body 610 and covers the hole 611 when attached to the main body 610. The main body 610 and the lid 63 are each made of a synthetic resin molding that does not have translucency.

The main body 610 is formed in a U-shaped flat plate shape. A triangular prism-shaped recess (mating recess 618) is formed on the underside of the main body 610 (see FIG. 14). The front surface of the main body 610 is flat, and the back surface of the main body 610 is provided with a pair of vertical pieces 612, a horizontal piece 613, a pair of support pieces 614, and a pair of protruding pieces 615.

The pair of vertical pieces 612 are formed in an approximately trapezoidal shape and protrude from the front and rear of the hole 611 on the back surface of the main body 610 in the thickness direction of the main body 610. The horizontal piece 613 is formed in a rectangular flat plate shape and protrudes from the bottom of the hole 611 on the back surface of the main body 610 in the thickness direction of the main body 610 so as to connect the bottom ends of the pair of vertical pieces 612.

One coupling groove 616 is provided at each end of the horizontal piece 613 in the front-rear direction. These coupling grooves 616 are open at the tip side of the horizontal piece 613 and are formed in a square shape with the thickness direction of the main body 610 as the longitudinal direction. In addition, one protrusion 617 is provided near each coupling groove 616 on the upper surface of the horizontal piece 613. These protrusions 617 are formed in the shape of a square pillar with the thickness direction of the main body 610 as the axial direction.

The pair of support pieces 614 are formed in a pyramid shape and protrude from the side surfaces of the pair of vertical pieces 612 along the main body 610 in a direction approaching the hole 611. Here, a space is formed between the pair of support pieces 614 and the main body 610 into which the flange portion 631 of the lid body 63 is slidably inserted.

The pair of protrusions 615 are formed in a rectangular column shape and protrude outward from the outer surfaces of the pair of vertical pieces 612 in the thickness direction (front-to-back direction) of the vertical pieces 612 from approximately the center of the vertical pieces 612 in the vertical direction.

The lid 63 has a main body 630 formed in a rectangular box shape, flanges 631 protruding from the bottom surface and both front and rear sides of the main body 630, a pair of support portions 632, and a claw portion 633 (see Figures 13 and 14).

The surface of the main body 630 is flat. The portions of the flange 631 that protrude from the front and rear sides of the main body 630 are formed to taper in thickness downward.

The pair of support parts 632 are each formed in a trapezoidal shape and protrude in the left-right direction from both the front and rear ends of the lower part of the back surface of the main body part 630. The claw part 633 is provided in the center of the front-rear direction on the underside of the main body part 630 and protrudes toward the front surface side of the main body part 630 beyond the flange part 631.

The mounting fixture 62 has a fixed plate 620, a connecting plate 621, and a support plate 622. The fixed plate 620 is formed in a rectangular flat plate shape. The support plate 622 is formed in a rectangular flat plate shape smaller than the fixed plate 620. The connecting plate 621 is formed in a Z shape, and connects an end of the fixed plate 620 to an end of the support plate 622. The fixed plate 620, connecting plate 621, and support plate 622 are integrally formed by bending a single metal plate.

The fixing plate 620 has two circular screw insertion holes 623. The mounting fixture 62 is fixed to the support member 21 by screwing the screws inserted into the two screw insertion holes 623 of the fixing plate 620 into the main part 210 of the support member 21.

Two parallel mating grooves 624 are formed on the fixed plate 620, connecting plate 621, and support plate 622 (see Figures 12-14).

(2-5-6) Sealing Member The light source unit 2 includes a sealing member 7. The sealing member 7 has a function of preventing foreign matter (dust, insects, etc.) from entering through a gap generated between the cover end portion 60 of the end member 6 and the cover 22.

The seal member 7 has a main body 70, a seal piece 71, and a pair of ribs 72 (see Figures 13 and 14). The seal member 7 is made of, for example, silicone resin. The main body 70 is formed in an approximately rectangular tube shape. However, the upper wall of the main body 70 is formed thinner than the lower wall and the front and rear walls. The seal piece 71 is formed in a U-shape and protrudes outward from near the tip of the lower wall and the front and rear walls of the main body 70. The pair of ribs 72 are each formed in a rectangular flat plate shape and protrude upward from both the front and rear ends of the upper wall of the main body 70 (see Figure 13).

(2-6) Process for Assembling the Light Source Unit Next, the process for assembling the light source unit 2 will be described.

(2-6-1) Step of attaching the power supply unit and the signal terminal block to the support member First, the power supply case 51 is screwed to the main part 210 of the support member 21 at approximately the center of the upper surface of the main part 210, thereby attaching the power supply unit 5 to the support member 21 (see FIG. 10). At this time, the open surface of the power supply case 51 is closed by the main part 210 (see FIG. 11). Also, the power supply case 51 has a hook piece 510 that protrudes outward by being cut and raised (see FIG. 11). Then, the hook piece 510 is hooked on the hook part 31 of the side wall part 211, thereby preventing the power supply case 51 from floating up from the main part 210 of the support member 21.

The two signal terminal blocks 52 are attached to the upper surface of the main part 210 of the support member 21 by two mounting bases 23 (see Figs. 10 and 15). Each mounting base 23 has a fixing part 230 to which the signal terminal block 52 is fixed, and a screw-fastening piece 231 that is screwed to the main part 210. A step is formed between the fixing part 230 and the screw-fastening piece 231, and when the screw-fastening piece 231 is screwed to the main part 210, a space is formed between the fixing part 230 and the main part 210 (see Fig. 15). A V-shaped protrusion 233 is provided at the end of the fixing part 230, and the protrusion 233 is hooked onto the protrusion 215 provided on the side wall part 211 of the support member 21, so that the fixing part 230 is supported by the side wall part 211 (see Fig. 15). The two signal terminal blocks 52 and the power supply unit 5 are each connected by two signal lines 53 (see Fig. 10).

The fixing parts 230 are each provided with a string attachment part 232 to which a string for temporary hanging is attached. The lower end of the string for temporary hanging is attached to the string attachment part 232. The string for temporary hanging is used when attaching the light source unit 2 to the device body 1.

(2-6-2) Step of attaching the light source module to the support member Next, the light source module 20 is attached to the underside of the main part 210. The light source module 20 is attached to the main part 210 by inserting the board 200 into the gap between the locking piece 213 and the main part 210 and screwing the board 200 to the main part 210 in a state where the board 200 is positioned by the positioning piece 212 (see FIGS. 11 and 16 ). At this time, the light source module 20 and the power supply unit 5 are electrically connected through a through hole provided in the main part 210.

(2-6-3) Step of attaching cover to support member Next, the attachment portion 222 of the cover 22 is inserted from one end in the longitudinal direction of the cover 22 into the gap between the underside of the main portion 210 and the cover attachment piece 214, thereby attaching the cover 22 to the main portion 210 (see FIG. 11 ). Note that the cover 22 is movable relative to the main portion 210 along the longitudinal direction of the main portion 210, since the attachment portion 222 is simply hooked onto the cover attachment piece 214 of the main portion 210.

(2-6-4) End member attachment process First, the main body 70 of the seal member 7 is attached to the tubular portion 600 of the cover end portion 60 so as to cover the tubular portion 600. Then, the pair of coupling portions 604 of the cover end portion 60 are inserted one by one into the pair of coupling grooves 616 of the main body 610 of the end cap portion 61, thereby coupling the cover end portion 60 and the main body 610 of the end cap portion 61 (see FIG. 12). At this time, the coupling protrusions 606 of the cover end portion 60 and the coupling recesses 618 of the end cap portion 61 are coupled to each other, thereby positioning the cover end portion 60 and the end cap portion 61.

Next, the pair of protrusions 617 on the body 610 of the end cap portion 61 are engaged with each of the two engagement grooves 624 of the attachment 62, thereby attaching the attachment 62 to the end cap portion 61.

The lid 63 is attached to the end cap 61 by inserting the flange 631 into the space between the pair of support pieces 614 of the end cap 61 and the main body 610. The lid 63 is prevented from coming off the main body 610 by the claws 633 on the main body 630 catching on the recesses 619 on the back surface of the main body 610 of the end cap 61 (see FIG. 16).

When the lid 63 is attached to the end cap 61, the support plate 622 of the mounting fixture 62 is sandwiched between the pair of support parts 632 of the lid 63 and the horizontal piece 613 of the main body 610 (see FIG. 16). As a result, the pair of support parts 632 restrict the vertical movement of the mounting fixture 62, so that the projection 617 and the engagement groove 624 do not come loose.

The end members 6 assembled as described above are attached to both ends of the support member 21 and the cover 22 in the longitudinal direction, one by one. Specifically, the front and rear end portions of the fixing plate 620 of the mounting fixture 62 are inserted between the upper surface of the main part 210 and the pair of protrusions 215. In addition, the pair of protrusions 615 of the end cap part 61 are inserted under the hook parts 31 of the pair of side wall parts 211. In other words, the pair of protrusions 615 of the end cap part 61 are hooked on the hook parts 31 in the vertical direction. As a result, rattling of the end cap part 61 relative to the support member 21 is suppressed. Then, the fixing plate 620 is screwed to the main part 210 of the support member 21 by two screws inserted into the two screw insertion holes 623 of the fixing plate 620.

The tubular portion 600 of the cover end portion 60 and the seal member 7 are inserted into the cover 22, and both longitudinal ends of the support member 21 are blocked by the main body 610 of the end cap portion 61. The seal piece 71 of the seal member 7 inserted into the cover 22 seals the gap between the cover end portion 60 and the cover 22 by adhering closely to the inner surfaces of the front wall 220 and the side wall portion 211 of the cover 22 (see FIG. 16).

Here, if the main body 70 of the sealing member 7 is in close contact with the inner surface of the front wall 220 and the side wall portion 211 of the cover 22, the frictional force between the sealing member 7 and the cover 22 may become too large when the cover 22 expands and contracts due to heat, causing excessive stress to be generated in the cover 22.

However, by closely adhering the seal piece 71 of the seal member 7 to the inner surface of the front wall 220 and the side wall portion 211 of the cover 22 as described above, the frictional force between the seal member 7 and the cover 22 does not become greater than necessary, and the stress generated in the cover 22 can be suppressed.

When the end member 6 is attached to the longitudinal ends of the support member 21 and the cover 22, the pair of pressing pieces 605 of the cover end portion 60 are positioned so as to overlap the ends of the substrate 200 of the light source module 20 in the vertical direction (see FIG. 16). Therefore, when an external force is applied to the cover end portion 60, the pressing pieces 605 press the substrate 200, thereby preventing the cover end portion 60 from collapsing into the cover 22.

As described above, the assembly of the light source unit 2 is completed by attaching one end member 6 to each of the longitudinal ends of the support member 21 and the cover 22.

(2-7) Installation Procedure of Lighting Fixture Next, the procedure of the installation work to attach the lighting fixture A1 to the ceiling will be described. The worker performing the installation work inserts the power cable 80, which is drawn into the room from a hole provided in the ceiling, into the first wire hole 12 of the fixture body 1. The worker also inserts the signal cable, which is drawn into the room from a hole provided in the ceiling, into the second wire hole 13. The worker then inserts each of the two suspension bolts protruding downward from the ceiling into the two bolt insertion holes 14 of the fixture body 1, and attaches the fixture body 1 to the ceiling by tightening nuts on each suspension bolt. The worker also connects the power cable 80 to the power terminal block 15.

Then, the worker temporarily hangs the light source unit 2 on the fixture body 1 with two strings by hooking one end of each of the two strings attached to the string attachment parts 232 of the two mounting bases 23 into the two hanging holes 18 of the fixture body 1. In this state, the worker connects the receptacle connector 55 of the power supply unit 5 to the plug connector 16 of the fixture body 1. Furthermore, the worker connects the signal line of the signal cable inserted into the second wire hole 13 of the fixture body 1 to the signal terminal block 52.

Then, the worker brings the light source unit 2 in the temporarily hung state close to the fixture body 1 while supporting it with both hands, and inserts the mounting spring 30 of the fixture body 1 between the pair of side wall portions 211 of the support member 21. At this time, the tip of the side wall portion 211 hits the guide piece 400 of the guide member 40, so that the mounting spring 30 is securely inserted between the pair of side wall portions 211. This prevents the spring piece 300 of the mounting spring 30 from protruding outside the side wall portion 211, and prevents the spring piece 300 from being subjected to excessive force and plastic deformation.

In addition, the tip portions of the pair of spring pieces 300 of the mounting spring 30 are inclined inward (away from the hook portion 31). This allows the worker to smoothly bend the tip portions of the spring pieces 300 without them getting caught in the hook portion 31, and ultimately ensure that the spring pieces 300 are hooked securely onto the hook portion 31.

Furthermore, the limiting member 41 limits the amount of deformation (deflection) of the spring piece 300, preventing problems such as plastic deformation caused by excessive force being applied to the spring piece 300.

The mounting spring 30 inserted between the pair of side wall portions 211 has the tip portions of the pair of spring pieces 300 hooked onto the hook portions 31 on the inner surfaces of the side wall portions 211 (see Figures 11 and 15). In other words, the light source unit 2 is attached to the fixture body 1 by the mounting member 3 consisting of the two mounting springs 30 and the hook portions 31. If the worker pulls the light source unit 2 downward, the tip portions of the mounting springs 30 will come off the hook portions 31, and the light source unit 2 can be removed from the fixture body 1.

Here, as shown in FIG. 17, the light source unit 2 has a small gap between the longitudinal end of the cover 22 and the wall 601 of the cover end portion 60 of the end member 6. In other words, while the power supply unit 5 is operating and the light source module 20 is turned on, the temperature of the cover 22 rises, and the cover 22 made of a synthetic resin molded body expands due to thermal expansion. If there was no gap between the end of the cover 22 and the wall 601 of the cover end portion 60, the end of the cover 22 expanded due to thermal expansion would come into contact with the wall 601, and the expansion of the cover 22 would be prevented, which could cause defects such as warping or deformation of the cover 22. However, as described above, the light source unit 2 provides a gap between the end of the cover 22 and the wall 601 of the cover end portion 60, making it difficult for the end of the cover 22 expanded due to thermal expansion to come into contact with the wall 601. As a result, the light source unit 2 and the lighting device A1 can suppress the occurrence of defects such as the cover 22 being damaged due to the expansion of the cover 22 due to thermal expansion.

Even if a small gap is created between the longitudinal end of the cover 22 and the wall 601 of the cover end portion 60 of the end member 6, the boundary between the cover 22 and the support member 21 is blocked by a pair of ribs 72 of the seal member 7 (see FIG. 17). Therefore, it is possible to prevent foreign matter from entering the cover 22 through the gap at the boundary between the cover 22 and the support member 21.

However, there are cases where multiple lighting fixtures A1 are attached to the ceiling in a row with no gaps between them. In this case, the lid 63 is removed from the main body 610 of the end cap portion 61, and the power cable 80 and the signal cable are routed and wired through the hole 611 in the end cap portion 61. Therefore, the worker only needs to pull and remove the lid 63 from the end cap portion 61 of the light source unit 2 before attaching it to the fixture main body 1, which improves the workability of the wiring work.

(3) Features of the embodiment One feature of the lighting fixture A1 according to the embodiment is that the light source unit 2 is attached to the fixture body 1 by hooking an attachment spring 30 arranged on the fixture body 1 onto a hook portion 31 provided on the inner surface of the side wall portion 211 of the support member 21.

According to the above features, the fixture body 1 can be accommodated between a pair of side wall portions 211 of the support member 21, so there is no gap at the boundary between the light source unit and the fixture body as in the conventional example. As a result, the lighting fixture A1 can have an improved external appearance compared to the conventional example. In addition, the light source unit 2 according to the embodiment is configured to accommodate the fixture body 1 between a pair of side wall portions 211 of the support member 21, so similar to the lighting fixture A1, the external appearance can be improved.

(4) Modifications Modifications of the lighting device A1 according to the embodiment will be described with reference to Fig. 18 and Fig. 19. However, a lighting device A2 of the modification has a common configuration with the lighting device A1, except for the structure of the functional block 4. Therefore, in the lighting device A2 of the modification, components common to the lighting device A1 are denoted by the same reference numerals, and illustrations and descriptions thereof will be omitted as appropriate.

In the functional block 4 of the modified lighting fixture A2, the third holding piece 423 of the holding member 42 is formed in an L-shape. A pair of claws 44 is provided on the tip of the flange portion 431 of the bushing portion 43 and on the upper end of the guide piece 400 of the guide member 40 (see FIG. 18). The functional block 4 is attached to the fixture body 1 by hooking these claws 44 onto the edge of the second electric wire hole 13 and the edge of the hook hole 102 of the bottom plate 10.

In the lighting fixture A2 of the modified example, as in the lighting fixture A1, the electric wire 17 is held by the holding member 42, thereby preventing the insulation of the electric wire 17 from being damaged.

(5) Summary The lighting fixture (A1; A2) according to the first aspect of the present disclosure includes a long fixture body (1), a long light source unit (2), and an attachment member (3) for detachably attaching the light source unit (2) to the fixture body (1). The light source unit (2) includes a long light source module (20) and a support member (21) for supporting the light source module (20). The light source module (20) includes a long substrate (200) and a plurality of light-emitting elements (LEDs 201) arranged on the surface of the substrate (200). The support member (21) includes a main portion (210) formed in a long plate shape and facing the back surface of the substrate (200), and a pair of side wall portions (211) standing on the back surface side of the substrate (200) from a pair of side ends along the longitudinal direction of the main portion (210). The mounting member (3) has one or more mounting springs (30) arranged on the instrument body (1) and a hook portion (31) on which a part of the mounting spring (30) is hooked. The hook portion (31) is provided on the inner surface of the pair of side walls (211) facing each other.

The lighting fixture (A1; A2) according to the first aspect has an improved appearance because the fixture body (1) is housed between a pair of side walls (211) of the support member (21), eliminating the gap at the boundary between the light source unit and the fixture body as in the conventional example.

The lighting fixture (A1; A2) according to the second aspect of the present disclosure can be realized by combining it with the first aspect. In the lighting fixture (A1; A2) according to the second aspect, the mounting spring (30) preferably has one or more spring pieces (300) rising from the fixture body (1) toward the light source unit (2). The hook portion (31) preferably protrudes from the inner surface of the side wall portion (211) so that the spring pieces (300) can hook onto it.

When attaching the light source unit (2) to the fixture body (1) in the lighting fixture (A1; A2) according to the second aspect, the spring piece (300) rising toward the light source unit (2) can be hooked onto the hook portion (31). As a result, the lighting fixture (A1; A2) according to the second aspect can improve the workability of hooking the mounting spring (30) onto the hook portion (31).

The lighting fixture (A1; A2) according to the third aspect of the present disclosure can be realized by combining it with the second aspect. In the lighting fixture (A1; A2) according to the third aspect, it is preferable that the tip portion of the spring piece (300) is inclined in a direction away from the hook portion (31) toward the tip of the spring piece (300).

The lighting fixture (A1; A2) according to the third aspect allows the tip of the spring piece (300) to bend smoothly without getting caught on the hook portion (31), and ultimately allows the spring piece (300) to be securely hooked onto the hook portion (31).

The lighting fixture (A1; A2) according to the fourth aspect of the present disclosure can be realized in combination with the second or third aspect. In the lighting fixture (A1; A2) according to the fourth aspect, it is preferable that the fixture body (1) has a limiting member (41) that limits the amount of deformation of the spring piece (300).

The lighting fixture (A1; A2) according to the fourth aspect limits the amount of deformation of the spring piece (300) by the limiting member (41), thereby preventing the occurrence of defects such as plastic deformation caused by the application of excessive force to the spring piece (300).

The lighting fixture (A1; A2) according to the fifth aspect of the present disclosure can be realized by combining it with any of the first to fourth aspects. In the lighting fixture (A1; A2) according to the fifth aspect, it is preferable that the hook portion (31) is formed as a long protrusion along the longitudinal direction of the side wall portion (211).

The lighting fixture (A1; A2) according to the fifth aspect can form the hook portion (31) integrally with the side wall portion (211) by, for example, extrusion molding, which improves the work efficiency when creating the hook portion (31) on the inner surface of the side wall portion (211).

The lighting fixture (A1; A2) according to the sixth aspect of the present disclosure can be realized by combining it with any of the first to fifth aspects. In the lighting fixture (A1; A2) according to the sixth aspect, the light source unit (2) preferably has a power supply unit (5) that lights up the light source module (20). The power supply unit (5) preferably has a power supply circuit (50) that supplies power to the light source module (20) and a power supply case (51) that houses the power supply circuit (50). The power supply case (51) preferably has a hook piece (510) that hooks onto the hook portion (31).

The lighting fixture (A1; A2) according to the sixth aspect can prevent the power supply case (51) from floating up from the main part 210 of the support member (21) by hooking the hook piece (510) on the hook part (31) of the side wall part (211).

The lighting fixture (A1; A2) according to the seventh aspect of the present disclosure can be realized by combining it with any of the first to sixth aspects. In the lighting fixture (A1; A2) according to the seventh aspect, it is preferable that the light source unit (2) has a pair of end members (6) attached to both ends of the support member (21) in the longitudinal direction. It is preferable that the pair of end members (6) have protrusions (615) that hook onto the hook portions (31) along the inner surfaces of the side walls (211).

The lighting fixture (A1; A2) according to the seventh aspect can suppress rattling of the end cap portion (61) relative to the support member (21) by hooking the protrusion (615) of the end cap portion (61) onto the hook portion (31).

The light source unit (2) according to the eighth aspect of the present disclosure is used in the lighting fixtures (A1; A2) according to the first to seventh aspects, and has a light source module (20) and a support member (21).

The light source unit (2) according to the eighth aspect is configured to accommodate the fixture body (1) between a pair of side walls (211) of the support member (21), and thus can improve the appearance, similar to the lighting fixtures (A1; A2) according to the embodiments.

A1, A2 Lighting fixture 1 Fixture body 2 Light source unit 3 Mounting member 5 Power supply unit 6 End member 20 Light source module 21 Support member 30 Mounting spring 31 Hook portion 41 Restricting member 50 Power supply circuit 51 Power supply case 61 End cap portion 200 Board 201 LED (light emitting element)
210 Main portion 211 Side wall portion 300 Spring piece 510 Hook piece 615 Projection piece

Claims (8)

The lighting device includes a long fixture body, a long light source unit, an attachment member for detachably attaching the light source unit to the fixture body , and a power supply unit ;
The light source unit includes a long light source module and a support member that supports the light source module.
The light source module includes a long substrate and a plurality of light emitting elements disposed on a surface of the substrate.
The support member has a main portion formed in a long plate shape and facing the rear surface of the substrate, and a pair of side wall portions standing on the rear surface side of the substrate from a pair of side ends along the longitudinal direction of the main portion,
The mounting member has one or more mounting springs arranged on the tool body and a hook portion to which a part of the mounting spring is hooked,
The hook portion is provided on an inner surface of the pair of side wall portions where the pair of side wall portions face each other ,
The power supply unit has a hook piece that is hooked onto the hook portion.
lighting equipment. The mounting spring has one or more spring pieces rising from the fixture body toward the light source unit,
The hook portion protrudes from the inner surface of the side wall portion so as to hook the spring piece.
2. The lighting device of claim 1. The tip portion of the spring piece is inclined in a direction away from the hook portion toward the tip of the spring piece.
3. A lighting device according to claim 2. The tool body has a limiting member that limits the deformation amount of the spring piece.
4. A lighting fixture according to claim 2 or 3. The hook portion is formed as a long protrusion along the longitudinal direction of the side wall portion.
A lighting device according to any one of claims 1 to 4. the power supply unit includes a power supply circuit that supplies power to the light source module and a power supply case that accommodates the power supply circuit;
The power supply case has the hook piece.
A lighting device according to any one of claims 1 to 5. the light source unit has a pair of end members attached to both ends of the support member in a longitudinal direction,
The pair of end members have protrusions that are hooked onto the hook portions along the inner surfaces of the side wall portions.
A lighting device according to any one of claims 1 to 6. A light source according to any one of claims 1 to 7,
The light source module and the support member are provided.
Light source unit.

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