CN108397726B - Light source unit and lighting fixture - Google Patents

Abstract

A light source unit and a lighting fixture can inhibit the brightness reduction of the peripheral part of a cover. The light source unit (2) is provided with a cover (5), wherein the cover (5) has light transmission and is mounted on the mounting member (4) in a manner of covering the LED module (3). The mounting member (4) has: a flat plate-shaped mounting board (40) on which the LED module (3) is mounted on the front surface (lower surface); and a side plate (41) protruding from the edge of the mounting plate (40) toward the lower surface side. The cover (5) is formed in a box shape having a bottom (50) facing the LED module (3) and a peripheral wall (51) protruding from the periphery of the bottom (50) toward the mounting board (40). The side plate (41) protrudes to a height at which the LED module (3) is hidden when viewed from a direction (left-right direction and front-rear direction) orthogonal to the thickness direction (up-down direction) of the mounting plate (40).

Description

Light source unit and lighting fixture

Technical Field

The present invention relates to a light source unit and a lighting fixture, and more particularly, to a light source unit having a solid-state light source and a lighting fixture having the light source unit.

Background

As a conventional example, a light source unit and a lighting fixture described in document 1 (japanese patent laid-open publication No. 2014-164879) are exemplified. The light source unit includes: a box-shaped reflector with an open lower surface; an LED module configured by mounting a large number of LEDs (Light Emitting diodes) on a mounting substrate; and an optical block having a large number of lenses for diffusing light emitted from the LEDs. The lighting apparatus includes: a light source unit; a frame supporting the light source unit; a panel having translucency for blocking the window hole of the frame; and an appliance body to which the frame is detachably attached. The light emitted from each LED is diffused by the lens, and then passes through the panel to be irradiated to the lower side of the device body.

In the light source unit and the lighting fixture described in document 1, since part of the light emitted from the LED module is blocked by the frame edge of the frame, the brightness of the peripheral portion of the panel (cover) is likely to be lower than the brightness (light amount) of the central portion of the panel (cover).

Disclosure of Invention

The invention aims to provide a light source unit and a lighting fixture which can inhibit brightness reduction of the peripheral part of a cover.

A light source unit according to an aspect of the present invention includes: a solid-state light source module in which 1 or more solid-state light sources are mounted on a mounting surface of a mounting substrate; and a mounting member mounting the solid-state light source module. The light source unit includes a cover having translucency and attached to the mounting member so as to cover the solid-state light source module. The mounting member has: a flat plate-shaped mounting plate on the surface of which the solid-state light source module is mounted; and a side plate protruding from an edge of the mounting plate toward the surface side. The cover is formed in a box shape having a bottom portion facing the solid-state light source module and a peripheral wall portion protruding from a peripheral edge of the bottom portion toward the mounting plate. The side plate protrudes to a height at which the solid-state light source module is hidden when viewed from a direction orthogonal to a thickness direction of the mounting plate.

A lighting fixture according to an aspect of the present invention includes the light source unit and a fixture main body that supports the light source unit.

Effects of the invention

The light source unit and the lighting fixture of the present invention have an effect of suppressing a decrease in brightness at a peripheral portion of the cover.

Drawings

Fig. 1 is a perspective view of a lighting fixture according to an embodiment of the present invention.

Fig. 2 is a side view of the lighting fixture.

Fig. 3 is another side view of the lighting fixture.

Fig. 4 is an exploded perspective view of the lighting fixture as viewed from above.

Fig. 5 is an exploded perspective view of the lighting fixture as viewed from below.

Fig. 6 is an exploded perspective view of the device body in the lighting device.

Fig. 7 is a sectional view of a main part of the lighting fixture.

Fig. 8 is a front view of one of the pair of hook portions in the lighting apparatus.

Fig. 9 is a front view of the other hook portion of the pair of hook portions in the lighting apparatus.

Fig. 10 is an exploded perspective view of the light source unit according to the embodiment of the present invention, as viewed from below.

Fig. 11 is an exploded perspective view of the light source unit as viewed from above.

Fig. 12 is a perspective view of the light source unit with a cover omitted.

Fig. 13 is a sectional view of a main part of the light source unit and the lighting fixture.

Fig. 14 is a top view of the light source unit described above with the cover omitted.

Fig. 15 is a front view of the mounting tool in the lighting fixture.

Fig. 16 is a plan view of the light source unit.

Fig. 17 a is a perspective view of a main part of the light source unit before the caulking pieces are caulked, and fig. 17B is a perspective view of a main part of the light source unit after the caulking pieces are caulked.

Fig. 18 is a partially omitted side view of the light source unit.

Fig. 19 is a front view of the mounting tool in the lighting fixture.

Fig. 20 is a plan view of the mounting tool.

Fig. 21 is a side view of the above-described mounting tool.

Fig. 22 is a sectional view of a main part of the lighting fixture.

Fig. 23 is a perspective view of a modification of the light source unit as viewed from below.

Description of the reference numerals

1: lighting apparatus

2: light source unit

3: LED module (solid light source module)

4: mounting member

5: cover

10: appliance body

11: containing part

12: reflecting member

20: gap

30: LED (solid light source)

31: mounting substrate

40: mounting plate

41: side plate

50: bottom part

51: peripheral wall part

511: 1 st peripheral wall part

512: 2 nd peripheral wall part

Detailed Description

The light source unit and the lighting fixture according to one embodiment of the present invention will be described in detail with reference to the drawings. The lighting fixture 1 of the present embodiment is an embedded lighting fixture embedded in a ceiling. Note that the configuration described in the following embodiments is merely an example of the present invention. The present invention is not limited to the following embodiments, and various modifications can be made in accordance with the design and the like as long as the effects of the present invention can be achieved. That is, the lighting fixture 1 is not limited to the embedded lighting fixture, and may be a direct-mount lighting fixture directly mounted on a ceiling, for example.

As shown in fig. 1, 4, and 5, the lighting apparatus 1 of the present embodiment includes the light source unit 2 of the present embodiment and an apparatus body 10. However, in the following description, unless otherwise specified, the vertical, front-rear, and left-right directions of the lighting fixture 1 and the light source unit 2 are defined in fig. 4 and 5.

As shown in fig. 5 and 6, the device body 10 includes a rectangular parallelepiped (box-shaped) housing portion 11 having an open lower surface, and a quadrangular frustum (square cone) shaped reflecting member 12 having open upper and lower surfaces. The housing portion 11 has a square bottom wall 110 and 4 rectangular side walls 111 projecting downward from 4 sides of the bottom wall 110. Next, in order to distinguish 4 side walls 111 as necessary, left, right, front, and rear side walls are denoted by reference numerals 111A, 111B, 111C, and 111D, respectively. The bottom wall 110 has a plurality of insertion holes 1100 through which power supply lines for power supply are inserted. The power supply line inserted through the insertion hole 1100 is electrically connected to the terminal block 13 attached to the lower surface of the bottom wall 110. The bottom wall 110 has a plurality of bolt insertion holes 1101 (see fig. 5) through which hanger bolts 90 embedded in the ceiling main body 9 of the building are inserted. These plurality of bolt insertion holes 1101 are provided in the bottom wall 110 so as to be aligned in a row in the left-right direction. Preferably, the bottom wall 110 and the 4 side walls 111 of the housing portion 11 are formed integrally by a metal plate such as a steel plate.

The bottom wall 110 has a plurality of insertion holes 1100 through which power supply lines for power supply are inserted. The power supply line inserted through the insertion hole 1100 is electrically connected to the terminal block 13 attached to the lower surface of the bottom wall 110. The terminal block 13 is a functional unit electrically connected to the power supply unit 6 of the light source unit 2 described later. As shown in fig. 5, terminal block 13 is located on side wall 111D on the rear side of the center of bottom wall 110 in the front-rear direction. In addition, the terminal block 13 is located at a position closer to the left side wall 111A than the center of the bottom wall 110 in the left-right direction.

The bottom wall 110 also has a plurality of bolt insertion holes 1101 (see fig. 5) through which hanger bolts 90 embedded in the ceiling main body 9 of the building are inserted. These plurality of bolt insertion holes 1101 are provided in the bottom wall 110 so as to be aligned in a row in the left-right direction. More specifically, as shown in fig. 14, the plurality of bolt insertion holes 1101 includes a plurality of pairs of bolt insertion holes 1101A, 1101B, and 1101C. In addition, the plurality of bolt insertion holes 1101 includes a single bolt insertion hole 1101D. The plurality of bolt insertion holes 1101A, 1101B, 1101C, and 1101D are aligned along a straight line (the 1 st straight line L10) on a plane orthogonal to the thickness direction (vertical direction) of the bottom wall 110. In the following, in order to avoid redundant representation, a plane orthogonal to the thickness direction of the bottom wall 110 is referred to as a reference plane as necessary. The reference plane and a plane that is one of the components of the lighting fixture 1 are not, however, virtual planes for explaining the positional relationship between the components. The 1 st straight line L10 is a direction (left-right direction) orthogonal to the thickness direction of the bottom wall 110. Further, the 1 st straight line L10 passes through the center of gravity position of the device main body 10 (the center of the bottom wall 110 in the present embodiment) in the reference plane. This enables the device body 10 to be attached to the hanger bolt 90 in a stable state. Each of the pairs of bolt insertion holes 1101A, 1101B, and 1101C is point-symmetric with respect to the center of gravity of the device body 10 in the reference plane. Therefore, the device body 10 can be attached in a stable state by the hanger bolt 90. Further, the intervals between the paired bolt insertion holes 1101 of the plurality of pairs of bolt insertion holes 1101A, 1101B, 1101C are different from each other. Here, the interval between the pair of bolt insertion holes 1101A is minimum, and then the order of the pair of bolt insertion holes 1101B and the pair of bolt insertion holes 1101C is increased. In addition, the individual bolt insertion holes 1101D are located at the center of gravity of the apparatus body 10 in the reference plane.

The left side wall 111A and the right side wall 111B each have a pair of locking portions 112 and a pair of conduction portions 113 (see fig. 6). The pair of locking portions 112 protrude obliquely upward from the inner surface of each side wall 111A (111B) (see fig. 7). Further, it is preferable that the locking portions 112 are formed by cutting out a part of the side wall 111A (111B). The pair of conductive portions 113 is formed by cutting out a part of the side wall 111A (111B) (see fig. 6). The left side wall 111A and the right side wall 111B each further have a pair of regulating pieces 115. The pair of regulating pieces 115 are substantially rectangular flat plate-like, and protrude from the inner side surface at both ends in the longitudinal direction (front-rear direction) of each side wall 111A (111B) so as to be parallel to the front and rear side walls 111C and 111D. These restricting pieces 115 are formed by cutting from each side wall 111A (111B). Therefore, since the restricting piece 115 is formed integrally with the accommodating portion 11, the number of components can be reduced compared to a case where the restricting piece 115 is formed separately from the accommodating portion 11.

The front side wall 111C and the rear side wall 111D each have a pair of locking portions 112 and a hook portion 114 (see fig. 6). The pair of locking portions 112 are formed by cutting out a part of the side wall 111C (111D) so as to protrude obliquely upward from the inner surface of each side wall 111C (111D), similarly to the locking portions 112 of the left and right side walls 111A, 111B. Hooks 114A and 114B are provided at the center in the longitudinal direction of side walls 111C and 111D. In this way, the device body 10 has a pair of hooks 114A and 114B located at both ends in a direction (front-rear direction) orthogonal to the thickness direction (vertical direction) of the bottom wall 110. As shown in fig. 13, a straight line (2 nd straight line L20) connecting the pair of hooks 114A and 114B to each other passes through the center (center of gravity position) of the device body 10 on a plane orthogonal to the thickness direction of the bottom wall 110, and is orthogonal to the 1 st straight line L10. However, the 1 st straight line L10 and the 2 nd straight line L20 do not need to be orthogonal to each other in a strict sense, and may intersect each other within a range that can be determined to be orthogonal in the field of lighting equipment. The hook portion 114A constitutes a coupling portion (1 st coupling portion) to be coupled to a mounting tool 8 (1 st mounting tool 8A) described later for mounting the light source unit 2 to the device body 10. The hook portion 114B constitutes a coupling portion (2 nd coupling portion) to be coupled to a mounting tool 8 (2 nd mounting tool 8B) described later for mounting the light source unit 2 to the device body 10. The hook portions 114A and 114B have holes 1143 that penetrate the front and rear side walls 111C (111D) in the thickness direction thereof.

As shown in fig. 8, the front hook 114A has an inverted U-shaped hole 1143 when viewed from the front-rear direction. As shown in fig. 9, the rear hook 114B has a rectangular temporary holding piece 1140 protruding upward from the lower edge and a rectangular 1 st protruding piece 1141 protruding downward from the upper edge, and has a hole 1143 formed in a substantially H shape. The rear hook 114B further has a 2 nd projecting piece 1142 projecting upward from an end of the temporary holding piece 1140 in the longitudinal direction (left-right direction). That is, in the hole 1143 of the rear hook 114B, a portion sandwiched by the temporary holding piece 1140, the 2 nd projecting piece 1142, and the 1 st projecting piece 1141 in the vertical direction is formed in a hook shape.

The reflecting member 12 has: 4 reflection plates 120; 4 side plates (fixing pieces) 121 projecting upward from the upper end of each reflecting plate 120; and a frame 122 (see fig. 5) protruding from the lower end of each reflector 120 in the front-rear direction and the left-right direction. Next, in order to distinguish the 4 side panels 121 as necessary, the left, right, front, and rear side panels are denoted by reference numerals 121A, 121B, 121C, and 121D, respectively. Each of the reflection plates 120 is formed in a trapezoidal shape. Each side plate 121 is formed in a substantially trapezoidal shape. Each side plate 121 is coupled to a corresponding 1 of the 4 side walls 111 of the receiving portion 11. That is, 4 side plates 121A, 121B, 121C, 121D are combined with 4 sidewalls 111A, 111B, 111C, 111D, respectively. The frame 122 is formed in a square frame shape, and is connected to the lower ends of the 4 reflection plates 120 (see fig. 2 and 3). The reflecting member 12 is configured to adjust the light distribution of the light emitted from the light source unit 2 by the inner surfaces (reflecting surfaces) of the 4 reflecting plates 120.

All of the 4 side plates 121 are formed in the same shape. Each side plate 121 has a pair of rectangular locking holes 123, a rectangular through hole 124, and a pair of trapezoidal holes 125 (see fig. 6). The through hole 124 is provided substantially at the center in the longitudinal direction of the side plate 121. A pair of holes 125 are provided on both sides of the through hole 124 along the longitudinal direction of the side plate 121. The pair of locking holes 123 are provided so that the longitudinal direction thereof coincides with the longitudinal direction of the side plate 121, and are provided on both sides of the pair of holes 125 along the longitudinal direction of the side plate 121. In the 4 side plates 121, a pair of locking holes 123 is provided, and 1 locking portion 112 of the pair of locking portions 112 is provided on each of the 4 side walls 111 of the housing portion 11, and is inserted into the corresponding 1 locking portion 112. The locking portion 112 inserted into the locking hole 123 is locked to the side plate 121 by abutting against an edge of each side plate 121 located above the locking hole 123 (see fig. 5 and 7). That is, the locking portion 112 is configured to prevent the side plate 121 from being displaced in a direction (downward) away from the bottom wall 110.

As described above, the holding portion 11 and the reflecting member 12 are coupled to each other to constitute the appliance body 10 (see fig. 4) by locking the total of 8 locking portions 112 to the side wall 111. The pair of conductive portions 113 provided on each side wall 111 are bent so as to be inserted into the corresponding holes 125 (see fig. 6). The bent conductive portion 113 contacts the edge of the hole 125 in the side plate 121. That is, the housing portion 11 is electrically connected to the reflecting member 12 through the conductive portion 113. The hook portions 114A and 114B provided on the side walls 111C and 111D overlap the through holes 124 provided on the side plates 121C and 121D in the thickness direction (front-rear direction) of the side walls 111C and 111D and the side plates 121C and 121D (see fig. 5).

Here, when 2 members constituting the tool body are joined by screwing, there is a possibility that workability of an assembling work of the tool body is lowered by a screwing work. In contrast, the fixture body 10 of the lighting fixture 1 is configured such that the receiving portion 11 and the reflecting member 12 are coupled to each other by the locking portion 112 provided on the side wall 111 being inserted into the locking hole 123 provided on the side plate 121. Therefore, the housing portion 11 and the reflecting member 12 can be coupled without using a tool such as a screwdriver, and the reduction in workability of the assembly work of the device body 10 can be suppressed. The locking portion 112 is configured to prevent the side plate 121 from being displaced in a direction away from the bottom wall 110 (downward direction). Therefore, when strong oscillation occurs due to an earthquake, the locking of the locking portion 112 is not easily disengaged, and the possibility of the reflecting member 12 falling can be reduced.

As shown in fig. 10 and 11, the light source unit 2 includes 2 led (light Emitting diode) modules 3, a mounting member 4, a cover 5, a power supply unit 6, a wireless communication unit 7, and 2 mounting tools 8. The 2 LED modules 3, the cover 5, the power supply unit 6, the wireless communication unit 7, and the 2 mounting tools 8 are mounted to the mounting member 4. As shown in fig. 14, the light source unit 2 includes an electric wire 200. The electric wire 200 is used for electrical connection of the terminal block 13 of the appliance main body 10 and the power supply unit 6. As shown in fig. 14, the electric wire 200 is connected to the power supply unit 6 at the 1 st end 201. In addition, the electric wire 200 has a connector 210 at the 2 nd end 202 for connection with the terminal block 13. That is, the 1 st end 201 of the electric wire 200 is electrically connected to the power supply unit 6, and the 2 nd end 202 of the electric wire 200 is electrically connected to the terminal block 13. Further, the connector 210 of the electric wire 200 is not directly connected to the terminal block 13, but is connected to another electric wire connected to the terminal block 13.

The mounting member 4 has a square mounting plate 40 and 4 side plates 41 projecting downward from 4 sides of the mounting plate 40. The mounting board 40 has a 1 st surface (lower surface) 401 and a 2 nd surface (upper surface) 402 which are both surfaces in the 1 st direction (vertical direction). That is, each side plate 41 protrudes from the corresponding edge (edge) of the mounting plate 40 toward the 1 st surface 401. However, it is preferable that the mounting plate 40 is formed integrally with the 4 side plates 41 by bending a metal plate such as a zinc steel plate. The 4 side plates 41 are each formed in an elongated rectangular shape. The mounting plate 40 has 1 mounted portion 42 at the center in the longitudinal direction among its 4 sides.

As shown in fig. 11, the mounting member 4 includes a (1 st) holder 43 and a (2 nd) holder 44. The 1 st holding jig 43 and the 2 nd holding jig 44 are used for holding the electric wire 200.

As shown in fig. 11 and 16, the 1 st holder 43 is positioned at the center of the mounting plate 40 in the 2 nd direction (front-rear direction) orthogonal to the 1 st direction (up-down direction). As shown in fig. 14 and 16, the 1 st holder 43 is located at a position closer to the center than one end (left end) of the attachment plate 40 in the 3 rd direction (left-right direction) of the attachment plate 40, which is orthogonal to the 1 st direction and the 2 nd direction, respectively. As shown in fig. 11, the 1 st holder 43 includes a projection 431 projecting upward from the 2 nd surface 402 of the attachment plate 40, and a cover piece 432 projecting from the tip end of the projection 431 toward the other end (right end) side in the 3 rd direction of the attachment plate 40. The length of the projecting piece 431 in the vertical direction is set so that the electric wire 200 can be disposed between the covering piece 432 and the attachment plate 40. That is, the 1 st holding tool 43 holds the electric wire 200 between the cover sheet 432 and the mounting plate 40.

As shown in fig. 14 and 16, the 2 nd holding fixture 44 is located at a position closer to the center than the rear end of the mounting plate 40 in the front-rear direction of the mounting plate 40. The 2 nd holder 44 is located at a position closer to the center than the left end of the mounting plate 40 in the left-right direction of the mounting plate 40. As shown in fig. 11, the 2 nd holding tool 44 includes a projecting piece 441 projecting upward from the 2 nd surface 402 of the mounting plate 40, and a cover sheet 442 projecting from the tip end of the projecting piece 441 toward the left end side of the mounting plate 40. The length of the protruding piece 441 in the vertical direction is set so that the electric wire 200 can be disposed between the covering piece 442 and the mounting plate 40. That is, the 2 nd holding tool 44 holds the electric wire 200 between the covering sheet 442 and the mounting plate 40.

The 1 st holder 43 and the 2 nd holder 44 are formed integrally with the mounting plate 40 by cutting out and bending a part of the metal plate forming the mounting plate 40.

Each of the 2 LED modules 3 is configured by mounting a large number of LEDs 30 on a mounting surface (lower surface) of a rectangular mounting substrate 31. Each LED 30 is, for example, an illumination white LED that emits white light. The LEDs 30 are arranged in a grid pattern on the mounting surface of the mounting substrate 31, and are electrically connected to each other via a wiring conductor (copper foil) formed on the mounting surface. A Receptacle connector (Receptacle connector)32 electrically connected to each LED 30 via a wiring conductor is mounted on the mounting surface of each mounting substrate 31. The receptacle connector 32 is connected to a plug connector wired to an output line of the power supply unit 6 so as to be able to be inserted and removed as described later. The 2 LED modules 3 are mounted by screw fastening on the lower surface of the mounting board 40 so as to be arranged at intervals in the left-right direction (see fig. 12).

The power supply unit 6 is configured to light each of the 2 LED modules 3. That is, the power supply unit 6 is configured to light the LED 30 as a light source. The power supply unit 6 has: a power supply circuit configured by mounting electronic components on the printed wiring board 61; and a case 60 for housing the power supply circuit (see fig. 11). The power supply circuit includes an input connector 62, a rectifier, a power factor correction circuit, a step-down DC/DC converter, an output connector 63, and the like. The input connector 62 is electrically connected to the terminal block 13 via an electric wire. The power supply circuit converts ac power input from the input connector 62 into dc power, and then outputs the converted dc power from the output connector 63 via a power line (output line). The dc power is supplied to each LED 30 of each LED module 3 via a plug connector and a receptacle connector 32 wired to the tip of the output line.

The printed wiring board 61 has a wiring conductor (copper foil) formed on a component surface of a long rectangular flat plate-shaped insulating substrate. On the surface of the printed wiring board, so-called lead members such as an input connector 62, an output connector 63, a smoothing capacitor, and a choke coil are mounted. Among the electronic components constituting the power supply circuit, surface-mounted components are mounted on the solder surface of the printed wiring board. The input connector 62 is attached to one end (left end) of the printed wiring board 61 in the longitudinal direction, and the output connector 63 is attached to the other end (right end) of the printed wiring board 61 in the longitudinal direction. As shown in fig. 11, the case 60 is formed in an elongated box shape by a metal plate material. The housing 60 accommodates a printed wiring board 61 inside so as to expose an input connector 62 and an output connector 63. As shown in fig. 16, the power supply unit 6 is screwed to the attachment plate 40 at the front end (one end in the 2 nd direction of the attachment plate 40) of the 2 nd surface (upper surface) 402 of the attachment plate 40 so that the longitudinal direction of the housing 60 coincides with the left-right direction. In particular, the housing 60 is disposed such that the input connector 62 faces the left end side of the mounting plate 40 and the output connector 63 faces the right end side of the mounting plate 40.

As shown in fig. 11, the wireless communication unit 7 includes a synthetic resin case 70, a signal cable 71, a plug connector 72, and the like. The wireless communication unit 7 is configured to acquire a control command from a wireless signal (for example, a wireless signal using a radio wave in a 920MHz band as a medium) received by an antenna housed in the housing 70. The wireless signal is transmitted from the transmitter, and transmits a control command for turning on/off the lighting fixture 1 and/or adjusting the light. The wireless communication unit 7 is configured to transmit a control command acquired from a wireless signal to the power supply circuit of the power supply unit 6 via the signal cable 71 and the plug connector 72. The plug connector 72 is electrically connected to a receptacle connector provided in the power supply unit 6. The power supply circuit of the power supply unit 6 is configured to adjust the dc power output from the output connector 63 in accordance with a control command transmitted from the wireless communication unit 7, thereby turning on/off the LED module 3 and adjusting the light.

The wireless communication unit 7 is attached to the upper surface of the attachment plate 40 (see fig. 11). The mounting plate 40 is provided with a hole 400, and a part of the housing 70 of the wireless communication unit 7 (an antenna housing 700 housing an antenna) is inserted through the hole 400 (see fig. 10). The housing 70 of the wireless communication unit 7 is fixed to the upper surface of the mounting plate 40 in a state where the antenna housing 700 is inserted into the hole 400. Wherein the hole 400 is located between 2 LED modules 3 at the lower surface of the mounting board 40. Therefore, the antenna housing 700 protrudes downward from between the 2 LED modules 3 on the lower surface of the mounting board 40 (see fig. 12).

The cover 5 has translucency and is supported by the mounting member 4 so as to cover the 2 LED modules 3. As shown in fig. 11, the cover 5 includes: a square shaped bottom 50; a peripheral wall portion 51 rising upward from the peripheral edge of the bottom portion 50; and 4 mounting portions 52 provided at the upper end of the peripheral wall portion 51. The peripheral wall portion 51 is formed in a rectangular frame shape (in the present embodiment, a square frame shape as an example) when viewed along the thickness direction (vertical direction) of the bottom portion 50. Preferably, the bottom portion 50, the peripheral wall portion 51, and the 4 mounting portions 52 are integrally formed of a light-transmitting synthetic resin material such as acrylic resin or polycarbonate resin. Preferably, at least the bottom portion 50 and the peripheral wall portion 51 are configured to diffuse light by crimping the surfaces thereof. Alternatively, it is preferable that at least the bottom portion 50 and the peripheral wall portion 51 are configured to diffuse light by mixing a diffusing agent into a synthetic resin material.

Next, the mounting structure of the mounting member 4 and the cover 5 will be described in detail with reference to fig. 10 to 17B.

The mounting plate 40 of the mounting member 4 has 1 mounted portion 42 at the center in the longitudinal direction of each of 4 sides (edges) of the square 2 nd surface 402. That is, as shown in fig. 16, a point P1 at which 2 line segments L1 and L2 (imaginary lines) connecting 2 mounted portions 42 corresponding to 2 sides opposed to each other intersect is the center of the mounting plate 40. The center axis C1 (imaginary line) of the cover 5 shown in fig. 11 passes substantially through the point P1.

Each of the attached portions 42 has an attachment hole 420, a caulking piece 421, a projection 422, a mounting piece 423, and a positioning piece 424. The mounting hole 420 is formed by penetrating the mounting plate 40 in the thickness direction thereof. The protruding plate 422 and the caulking pieces 421 are provided on the 2 nd surface 402 (upper surface) opposite to the 1 st surface 401 (lower surface) on which the 2 LED modules 3 are mounted. The protruding plate 422 and the rivet piece 421 are integrated with the mounting plate 40. The caulking pieces 421 serve as portions for caulking and engaging with the engagement pieces 521 of the cover 5 as described later.

Here, fig. 10, 11, and 16 show a state before caulking of the caulking piece 421, and similarly, a in fig. 17 also shows a main part of the state before caulking of the caulking piece 421 (as an example, only a right main part of the 2 nd surface 402 is shown). On the other hand, B in fig. 17 shows a main part of the state after the caulking of the caulking piece 421 (similarly, only the right main part of the 2 nd surface 402 is shown). In the following description, unless otherwise specified, the description will be made assuming a state (a in fig. 17) before the caulking piece 421 is caulked.

The protruding plate 422 and the caulking pieces 421 are formed in a substantially L-shaped plate shape as a whole when viewed in the thickness direction. The protruding plate 422 is an elongated rectangular plate-like member, and protrudes upward from the 2 nd surface 402 so that the longitudinal direction thereof is along the longitudinal direction of the corresponding side of the 2 nd surface 402. The rivet piece 421 is elongated from one end (front end in a of fig. 17) of the protruding plate 422 so as to extend along the longitudinal direction of the corresponding side of the 2 nd surface 402.

The mounting piece 423 has a substantially rectangular plate shape, and is provided at the upper end of the caulking piece 421 so as to protrude in a direction away from the center (point P1) of the mounting plate 40 (see a in fig. 17). The carrier piece 423 is integrated with the rivet piece 421.

The positioning piece 424 is provided on the 2 nd surface 402 opposite to the 1 st surface 401 on which the 2 LED modules 3 are mounted, similarly to the protruding plate 422 and the caulking piece 421. The positioning piece 424 has a substantially rectangular plate shape, and protrudes upward from the 2 nd surface 402 so as to face the protruding plate 422 with the mounting hole 420 interposed therebetween. The locating tab 424 is integral with the mounting plate 40. The positioning piece 424 is a portion for positioning the mounting component 85 of the mounting tool 8 with respect to the mounting plate 40. Specifically, the mounting component 85 is placed on the 2 nd surface 402 of the mounting plate 40 so that the recess formed in the base 850 of the mounting component 85 fits into the positioning piece 424, thereby positioning the mounting tool 8 with respect to the mounting plate 40.

As shown in fig. 16, the mounting hole 420 is an elongated rectangular hole (slot) extending in the longitudinal direction of a corresponding side of the 4 sides of the 2 nd surface 402 of the mounting plate 40 when viewed in the vertical direction. Further, when viewed in the vertical direction, the 4 mounting holes 420 are arranged in the region surrounded by the above-described 4 sides of the mounting plate 40 (see fig. 16). In other words, each mounting hole 420 is disposed inward (on the side of point P1) of the boss 422 and the rivet piece 421.

In the present embodiment, the mounting hole 420 is formed by punching a central region in the longitudinal direction in the vicinity of each side of the 2 nd surface 402 in a substantially H-shape, and thereafter cutting the central region in the upward direction. Here, the two cut-off portions are the 1 st portion having a tip end cut off in a direction away from the center (point P1) of the mounting plate 40 and the 2 nd portion having a tip end cut off in a direction away from the corresponding side of the 4 sides of the 2 nd surface 402. The 1 st portion is a projection 422, a caulking piece 421 and a mounting piece 423, and the 2 nd portion is a positioning piece 424.

On the other hand, the 4 mounting portions 52 of the cover 5 are arranged so as to correspond one-to-one to the 4 mounted portions 42 of the mounting member 4, respectively. The 4 mounting portions 52 are disposed at positions symmetrical with respect to the central axis C1 when viewed along the central axis C1 (see fig. 11) of the square frame-shaped peripheral wall portion 51. That is, the front and rear 2 mounting portions 52 provided on the front wall portion 511 and the rear wall portion 513 facing each other out of the 4 wall portions forming the peripheral wall portion 51 are disposed at positions symmetrical with respect to the center axis C1 when viewed along the center axis C1. The right and left 2 attachment portions 52 of the right wall portion 512 and the left wall portion 514 that are provided on the 4 wall portions and face each other are disposed at positions that are symmetrical with respect to the center axis C1 when viewed along the center axis C1. In the present embodiment, each mounting portion 52 is provided at the center in the longitudinal direction of the upper end of the corresponding wall portion.

Each mounting portion 52 has: a rectangular projecting piece 520 projecting from the upper end of the peripheral wall 51 in parallel with the bottom 50; an engaging piece 521 formed in a hook shape and protruding upward from the upper end of the peripheral wall 51; and a protrusion 522 protruding upward from the upper end of the peripheral wall 51.

Each of the protruding pieces 520 is formed to be fitted into a corresponding recess 310 of the 4 recesses 310 (see fig. 11) provided in the mounting substrate 31 of the 2 LED modules 3 mounted on the 1 st surface 401 of the mounting board 40. Each engaging piece 521 is a portion that is inserted into the corresponding mounting hole 420 and protrudes from the 2 nd surface 402 of the mounting plate 40. In other words, the vertical projecting amount of the engaging piece 521 is sufficiently larger than the thickness of the mounting plate 40. The projection 522 is also inserted into the mounting hole 420 and projects from the 2 nd surface 402 of the mounting plate 40. The protrusion 522 is disposed at a predetermined distance from the engagement piece 521 in the longitudinal direction of the corresponding wall portion of the peripheral wall portion 51.

As an example, referring to a in fig. 17, the dimension relationship is set such that the distance from the front end surface of the protrusion 522 to the rear end surface of the engagement piece 521 is slightly smaller than the dimension of the attachment hole 420 in the longitudinal direction (front-rear direction) of the right wall portion 512. In short, the protrusion 522 is configured to facilitate positioning of the engagement piece 521 with respect to the mounting hole 420.

The engagement piece 521 has a recess 523 into which the rivet piece 421 is inserted (see fig. 17 a and 17B). The recess 523 is open along the 2 nd face 402. Specifically, the recess 523 is concavely formed in a direction away from the protrusion 522. In the present embodiment, the protruding amount of the rivet piece 421 with respect to the protruding plate 422 is slightly smaller than the distance from the protrusion 522 to the bottom of the recess 523 so that the rivet piece 421 can be inserted into the recess 523 through the space between the protrusion 522 and the engagement piece 521.

The cover 5 is attached to the attachment member 4 so that the peripheral wall portion 51 is received inside the side plate 41 of the attachment member 4. Therefore, the peripheral wall portion 51 is disposed at a position before the side plate 41 of the mounting member 4 when viewed from the LED module 3. In other words, the metal side plate 41 is disposed outside the peripheral wall portion 51 of the resin cover 5 and is a portion facing the appliance main body 10 (the side plate 121 of the reflection member 12).

For example, if the resin cover is disposed at the outermost peripheral portion of the light source unit, if the cover is deformed (thermally expanded) by heat emitted from the solid-state light source (LED), the outermost peripheral portion of the cover may come into contact with the side plate 121 of the reflective member 12. Therefore, when the resin cover is disposed at the outermost peripheral portion of the light source unit, a design in consideration of thermal expansion needs to be made for the gap between the light source unit (cover) and the side plate 121 of the reflective member 12. In short, the clearance needs to be set to be large. Such a large gap may be easily visible to a person and may impair the design (aesthetic appearance) of the appearance.

In this regard, in the light source unit 2 of the present embodiment, since the side plate 41 made of metal corresponds to the outermost peripheral portion, the side plate 41 is less likely to be in contact with the side plate 121 of the reflective member 12 due to expansion by heat from the LED module 3. As a result, it is not necessary to design the gap between the light source unit 2 and the side plate 121 of the reflective member 12 in consideration of thermal expansion, and the lighting fixture 1 having a structure in which the gap dimension is suppressed as much as possible can be provided. Further, by suppressing the gap size as much as possible, the reduction in design of the appearance can be suppressed.

In particular, the 4 mounting portions 52 are disposed at positions symmetrical with respect to the central axis C1 when viewed along the central axis C1 (see fig. 11) of the square frame-shaped peripheral wall portion 51. Therefore, deformation (expansion) of the cover 5 due to heat from the LED module 3 is suppressed, and rattling of the cover 5 with respect to the mounting member 4 can be suppressed. Thus, the light source unit 2 having high reliability against heat can be provided.

Next, a process of attaching the cover 5 to the attachment member 4 will be described. First, the engaging pieces 521 and the protrusions 522 of the mounting portions 52 are inserted into the corresponding mounting holes 420 from below the mounting plate 40 upward (see fig. 11). Since the corner portion of the upper end of the protrusion 522 is chamfered, it can be smoothly inserted into the mounting hole 420. Then, the caulking pieces 421 (see a in fig. 17) protruding from the 2 nd surface 402 through the mounting holes 420 are caulked inward. That is, the caulking pieces 421 are bent inward at an angle of substantially 90 degrees with respect to the protruding plate 422 (see B of fig. 17). At this time, the caulking pieces 421 are inserted into the recesses 523 through the spaces between the protrusions 522 and the engagement pieces 521.

Thus, the engagement piece 521 engages with the caulking piece 421. That is, since the cover 5 is attached to the attachment plate 40 of the attachment member 4 so that the peripheral wall portion 51 is received inside the side plate 41, the cover 5 can be attached to the attachment member 4 while suppressing the use of other components such as attachment parts and screws. As a result, the number of components of the entire light source unit 2 can be reduced, and the manufacturing cost can be reduced.

As shown in fig. 17B, the mounting piece 423 located at the upper end of the rivet piece 421 contacts the upper surface in the recess 523, so that the engagement state between the engagement piece 521 and the rivet piece 421 can be stabilized.

Further, the structure is: when the mounting plate 40 is viewed in the vertical direction, the 4 mounting portions 52 and the 4 mounted portions 42 are received in the region inside the outer peripheral edge of the square mounting plate 40 in the state where the engaging piece 521 is engaged with the caulking piece 421. That is, it can be said that the mounting portion 52 and the mounted portion 42 are at positions that are not easily visible when a person looks down the light source unit 2. Therefore, the design (aesthetic appearance) of the appearance is improved. In addition, it contributes to downsizing of the entire light source unit 2.

The pair of mounting tools 8 (the 1 st mounting tool 8A and the 2 nd mounting tool 8B) have the same configuration. Each mounting tool 8 includes a mounting spring 80 and a mounting part 85 (see fig. 11, 14 to 20) for mounting the mounting spring 80 to the mounting plate 40. The attachment spring 80 is constituted by a torsion coil spring having a coil portion 81, 2 arm portions, and a tip portion 84. The longer arm of the 2 arms is referred to as the 1 st arm 82, and the shorter arm is referred to as the 2 nd arm 83. The 1 st arm 82 includes a hook piece 820, a 1 st arm piece 821, and a 2 nd arm piece 822. The 1 st arm piece 821 projects from the end of the coil part 81 in the radial direction of the coil part 81. In this case, a plurality of portions (for example, two portions) in the longitudinal direction of the 1 st arm piece 821 are bent in the same direction (downward direction) (see fig. 20). The hook piece 820 is formed in a U shape when viewed from the front-rear direction, and is connected to the tip of the 1 st arm piece 821 at one end in the longitudinal direction and to the tip of the 2 nd arm piece 822 at the other end in the longitudinal direction (see fig. 18). The rear end of the 2 nd arm piece 822 is connected to the tip portion 84. Among them, a plurality of portions (for example, two portions) in the longitudinal direction of the 2 nd arm piece 822 are bent in the same direction (downward direction) (see fig. 19). The distal end portion 84 protrudes from the rear end of the 2 nd arm piece 822 substantially in parallel with the hook piece 820.

The mounting component 85 includes a base 850, a 1 st supporting portion 851, a 2 nd supporting portion 852, a regulating portion 853, and a fixing portion 854. The base 850 is formed in a substantially rectangular flat plate shape (see fig. 15). The 1 st support portion 851 is provided at one end portion in the longitudinal direction of the base 850. The 1 st support portion 851 is formed in a bridge shape and is inserted into the coil portion 81 of the mounting spring 80 (see fig. 19). That is, the 1 st support portion 851 is configured to rotatably support the coil portion 81 about the axis thereof. The 2 nd arm 822 is hung on the base 850 (see fig. 21).

The 2 nd support part 852 is provided at the other end in the longitudinal direction of the base 850. The 2 nd support part 852 is formed in a semi-cylindrical shape, and has a distal end portion 84 (see fig. 15 to 20) to which the spring 80 is attached inserted. That is, the 2 nd support part 852 is configured to rotatably support the 1 st arm part 82 with the distal end part 84 as an axis. In other words, the 2 nd support part 852 is configured to rotatably support the 1 st arm part 82 with the end of the 2 nd arm piece 822 as a fulcrum. Here, when viewed from the thickness direction (vertical direction) of the base 850, the axis of the coil portion 81 and the axis of the 2 nd support portion 852 are aligned substantially linearly (see fig. 15). On the other hand, the axis of the coil part 81 is located above the axis of the 2 nd support part 852 when viewed from the longitudinal direction (left-right direction) of the base 850 (see fig. 20). As shown in fig. 14, the mounting components 85 of the 2 mounting tools 8A and 8B are screwed to the 2 nd surface 402 of the mounting plate 40 at both ends in the front-rear direction and at the center in the left-right direction. Here, it is preferable that the pair of mounting tools 8A, 8B are located on a straight line passing through the position of the center of gravity of the light source unit 2. The 1 st arm 82 of each mounting spring 80 protrudes out of the mounting plate 40 (see fig. 12).

The restricting portion 853 is formed in a rectangular flat plate shape and is configured to protrude obliquely upward from one end portion in the short side direction of the base 850. That is, the restricting portion 853 is configured to restrict the displacement (rotation) of the 1 st arm portion 82 by abutting the tip end thereof on the 1 st arm piece 821. The fixing portion 854 protrudes upward from the base 850 so as to be aligned with the 2 nd support portion 852 in the short side direction of the base 850, and has a circular screw insertion hole 855 (see fig. 15) on the upper surface thereof. The mounting component 85 is fixed to the 2 nd surface 402 of the mounting plate 40 at both ends in the front-rear direction and at the center in the left-right direction by screws inserted through the screw insertion holes 855 of the fixing portion 854 being screwed into screw holes of the mounting plate 40 (see fig. 10). Further, the 1 st arm 82 of the mounting spring 80 protrudes out of the mounting plate 40 (see fig. 12).

Here, the 2 nd arm piece 822 is formed longer than the 1 st arm piece 821. Therefore, in a state where the mounting spring 80 is mounted to the mounting part 85, the 2 nd arm piece 822 protrudes in a direction away from the mounting part 85 than the 1 st arm piece 821, and therefore the hook piece 820 and the 2 nd arm piece 822 slightly flex (see fig. 15 to 21). However, when the 1 st arm 82 is biased upward, the coil part 81 is displaced upward while still being supported by the 1 st support part 851, and therefore, when viewed in the axial direction of the coil part 81, the end of the 1 st arm piece 821 and the end (end part 84) of the 2 nd arm piece 822 substantially overlap each other. As a result, since the flexure of the hook piece 820 and the 2 nd arm piece 822 when the upward force is applied to the 1 st arm 82 is eliminated, the hook piece 820 is in a state of being substantially parallel to the axis of the coil part 81.

In the light source unit 2, as shown in fig. 16, the power supply unit 6 and the 1 st mounting tool 8A are arranged along a predetermined direction (the 2 nd direction of the mounting plate 40) on one surface (the 2 nd surface 402) of the mounting plate 40 so that no charging portion exists between the power supply unit 6 and the 1 st mounting tool 8A. The charging portion is a portion of the lighting fixture 1 to which electricity is supplied, and is, for example, an electric wire 200. In particular, in the present embodiment, the power supply unit 6 is disposed at a position closer to the 1 st mounting tool 8A than the 2 nd mounting tool 8B. More specifically, the power supply unit 6 and the 1 st mounting tool 8A are disposed adjacent to each other in a predetermined direction (the 2 nd direction of the mounting plate 40, the front-rear direction in fig. 16). Therefore, a region (charging region, wiring region) in which a charging portion can be arranged is not secured between the power supply unit 6 and the 1 st mounting tool 8A.

In the power supply unit 6, the longitudinal direction of the case 60 is orthogonal to a predetermined direction (front-rear direction). The longitudinal direction of the housing 60 need not be orthogonal to the predetermined direction in a strict sense, and may intersect with the predetermined direction. The housing 60 is positioned at the center in the left-right direction on the 2 nd surface 402 of the mounting plate 40. The 1 st mounting tool 8A is positioned at the center in the left-right direction on the 2 nd surface 402 of the mounting plate 40. Thus, the 1 st mounting tool 8A is positioned at the center in the longitudinal direction of the housing 60 of the power supply unit 6. Therefore, the 1 st mounting tool 8A faces the housing 60 in a predetermined direction (front-rear direction) instead of the input connector 62 and the output connector 63.

As shown in fig. 16, the 1 st mounting tool 8A, the housing 60, and the mounting plate 40 are designed such that the height H1 of the housing 60 with respect to the 2 nd surface 402 of the mounting plate 40 is higher than the height H2 of the 1 st mounting tool 8A with respect to the 2 nd surface 402 of the mounting plate 40. Thus, the housing 60 functions as a wall that prevents the hand of the operator from entering the instrument body 10 too far from the gap between the attachment member 4 and the instrument body 10.

As shown in fig. 16, the 1 st end 201 of the electric wire 200 is electrically connected to the connector 62, and the 2 nd end 202 is located on the opposite side of the power supply unit 6 from the attachment 8A. Here, the electric wire 200 is fixed to the mounting plate 40 by passing between the cover sheet 432 of the 1 st holder 43 and the mounting plate 40 and between the cover sheet 442 of the 2 nd holder 44 and the mounting plate 40. Thereby, the 2 nd end 202 of the electric wire 200 is held by the mounting plate 40 so as to be located on the opposite side of the mounting tool 8A with respect to the power supply unit 6.

In the lighting fixture 1 described above, as shown in fig. 14, the plurality of bolt insertion holes 1101(1101A, 1101B, 1101C, 1101D) are aligned along the 1 st straight line L10 on a plane (reference plane) orthogonal to the thickness direction of the bottom wall 110. The 1 st straight line L10 is orthogonal to the 2 nd straight line L20 that connects the pair of coupling portions 114, 114 to each other in the reference plane. Here, the pair of coupling portions 114 and 114 are coupled to the pair of mounting tools 8 and 8 of the light source unit 2. Therefore, the 2 nd straight line L20 connecting the pair of coupling portions 114, 114 to each other coincides with the straight line connecting the pair of mounting tools 8A, 8B to each other. Therefore, the 1 st straight line L10 can be said to be orthogonal to a straight line connecting the pair of mounting tools 8A, 8B to each other in the reference plane. The 1 st straight line L10 passes through the center between the pair of hook portions (coupling portions) 114, 114 on the reference plane.

In the lighting fixture 1, as shown in fig. 14, the power supply unit 6 and the function unit (terminal block 13) are located on opposite sides of the 1 st straight line L10 in the reference plane. Therefore, the possibility of interference between the power supply unit 6 and the functional unit (terminal block 13) and the hanger bolt 90 can be reduced. The power supply unit 6 and the terminal block 13 are electrically connected by the electric wire 200. The electric wire 200 is held by the mounting plate 40 by the 1 st holding tool 43. Here, the 1 st holder 43 is located on the 1 st straight line L10 in the reference plane. That is, since the electric wire 200 is fixed to the attachment plate 40 on the 1 st straight line L10, the possibility that the hanger bolt 90 inserted into the appliance main body 10 from any one of the plurality of bolt insertion holes 1101 will come into contact with the electric wire 200 can be reduced. The 1 st holder 43 has a cover sheet 432 positioned between the attachment plate 40 and the bottom wall 110, and holds the electric wire 200 between the cover sheet 432 and the attachment plate 40. Therefore, the cover sheet 432 can protect the electric wire 200 from the hanger bolt 90. In addition, the 1 st holder 43 does not overlap any of the plurality of bolt insertion holes 1101 in the reference plane. This allows the electric wire 200 to be separated from the hanger bolt 90. Therefore, the possibility of the hanger bolt 90 contacting the electric wire 200 can be further reduced.

As shown in fig. 10 and 11, 2 LED modules 3 (light sources) are mounted on the surface (1 st surface 401) of the mounting board 40 opposite to the one surface (2 nd surface 402). Therefore, the light source unit 2 can be larger than the case where the light source unit 2 is mounted on one surface (the 2 nd surface 402) of the mounting plate 40.

Next, the operation of installing the lighting fixture 1 on the ceiling will be described. The operator performing the construction work first inserts a power line into the insertion hole 1100 of the bottom wall 110, and then fastens the nut 91 to the hanger bolt 90 inserted into the bolt insertion hole 1101 (bolt insertion hole 1101B in fig. 5), thereby attaching the device body 10 to the hanger bolt 90 (see fig. 5). The worker places the device body 10 on the ceiling by connecting the power supply line drawn through the insertion hole 1100 to the terminal block 13. Further, since the device body 10 electrically connects the housing portion 11 and the reflecting member 12 through the conduction portion 113, it is possible to eliminate the trouble of grounding both the housing portion 11 and the reflecting member 12.

Next, the operator inserts the 1 st arm 82 of the mounting spring 80 of the rear mounting tool (2 nd mounting tool) 8B into the hole 1143 of the hook portion 114B of the rear side wall 111D through the through hole 124 of the rear side plate 121D. At this time, the operator inserts the end in the longitudinal direction of the hook piece 820 of the 1 st arm 82 from above the 2 nd projecting piece 1142 of the hook 114B, and then inserts the entire hook piece 820 from between the temporary holding piece 1140 and the 1 st projecting piece 1141. Further, if the worker applies an upward force to the 1 st arm 82 to which the spring 80 is attached in order to insert the hook 114B into the hole, the hook piece 820 of the 1 st arm 82 is in a state of being substantially parallel to the axis of the coil part 81, and thus the workability is easily improved. Then, the worker can temporarily hold the light source unit 2 on the device body 10 by hooking the hook piece 820 of the 1 st arm 82 to the temporary holding piece 1140 of the hook portion 114B. Here, since the 1 st arm portion 82 is restricted from displacement at a position abutting against the restricting portion 853 of the mounting component 85, it is possible to suppress plastic deformation due to excessive displacement.

The operator performs the wiring operation between the terminal block 13 and the power supply unit 6 while temporarily holding the light source unit 2 in the device body 10. In particular, the 2 nd end 202 of the wire 200 is located on the opposite side of the 1 st mounting tool 8A with respect to the power supply unit 6, and is therefore relatively close to the 2 nd mounting tool 8B. Therefore, the wiring work is easily performed. In the temporary holding state, even if the hook piece 820 moves between the temporary holding piece 1140 and the 1 st protruding piece 1141, the hook piece 820 is caught by the 2 nd protruding piece 1142, and therefore the attachment spring 80 is less likely to be inadvertently detached from the hook portion 114.

Then, the operator inserts the 1 st arm 82 of the attachment spring 80 of the front attachment tool 8A into the hole 1143 of the hook portion 114A provided in the front side plate 121C. At this time, the worker has to press and bend the mounting spring 80 of the 1 st mounting tool 8A. However, there is no charging portion (e.g., the electric wire 200) between the power supply unit 6 and the 1 st mounting fixture 8A. Therefore, the operator is less likely to touch the charging portion by mistake. Therefore, the safety of the work of attaching the light source unit 2 to the apparatus body 10 can be improved.

Here, the input connector 62 and the output connector 63 are provided at both ends of the housing 60 of the power supply unit 6 in the longitudinal direction, and the longitudinal direction of the housing 60 intersects with the predetermined direction in which the power supply unit 6 and the 1 st mounting tool 8A are arranged. The operator is less likely to touch the charging portions such as the input connector 62 and the output connector 63. Therefore, the safety of the work of attaching the light source unit to the appliance main body can be further improved.

In particular, the 1 st mounting tool 8A faces the housing 60 in the front-rear direction, not the input connector 62 and the output connector 63. Therefore, even when the operator touches the power supply unit 6, the operator does not touch the charging portions such as the input connector 62 and the output connector 63, but touches the housing 60. Therefore, the safety of the work of attaching the light source unit 2 to the apparatus body 10 can be further improved.

As shown in fig. 18, the height H1 of the housing 60 with respect to the 2 nd surface 402 of the mounting plate 40 is higher than the height H2 of the 1 st mounting tool 8A with respect to the 2 nd surface 402 of the mounting plate 40. Therefore, the case 60 prevents the hand of the operator from entering the device body 10 too much from the gap between the attachment plate 40 and the device body 10.

Further, since the 2 nd end 202 of the wire 200 is located on the opposite side of the 1 st mounting tool 8A with respect to the power supply unit 6, the worker is less likely to touch the 2 nd end 202 of the wire 200. Therefore, the safety of the work of attaching the light source unit 2 to the apparatus body 10 can be further improved.

After that, the operator lifts the light source unit 2 and stores it in the storage section 11. When the light source unit 2 is housed in the housing portion 11, the 1 st arm portion 82 of the mounting spring 80 of the mounting tools 8A, 8B is caught on the edges of the hook portions 114A, 114B of the side walls 111C, 111D. As a result, the light source unit 2 is supported by the device body 10 by the spring force of the 2 attachment springs 80. That is, the light source unit 2 is attached to the device body 10 by coupling the 1 st attachment tool 8A and the 2 nd attachment tool 8B to the hook portion (1 st coupling portion) 114A and the hook portion (2 nd coupling portion) 114B, respectively. Here, if the work of coupling the attachment tool 8 and the hook portion 114 is performed later, it is difficult to visually perform the work. Therefore, by performing the operation of coupling the 2 nd mounting tool 8B and the hook portion 114B first, the safety of the operation of mounting the light source unit 2 to the device body 10 can be further improved.

Here, in the lighting fixture 1, as shown in fig. 14, a 1 st straight line L10 in which a plurality of bolt insertion holes 1101(1101A, 1101B, 1101C, 1101D) are aligned is orthogonal to a 2 nd straight line L20 that connects the pair of hook portions (coupling portions) 114, 114 to each other. This enables the work of coupling each attachment tool 8 to the corresponding hook 114 to be performed at a position away from the hanger bolt 90 protruding in the device body 10. Therefore, the hanger bolt 90 is less likely to interfere with the work. This makes it possible to easily perform the work of attaching the light source unit 2 to the device body 10. Further, the 1 st straight line L10 passes through the center between the pair of hook portions (coupling portions) 114, 114. Therefore, the hook portions (coupling portions) 114 can be sufficiently separated from the hanger bolts 90, and the work of attaching the light source unit 2 to the device body 10 can be performed more easily.

Through the above-described procedure, the construction work of the lighting fixture 1 is completed.

When 2 LED modules 3 are turned on by the dc power supplied from the power supply unit 6, the light emitted from each LED module 3 passes through the bottom portion 50 and the peripheral wall portion 51 of the cover 5, spreads in the bottom portion 50 and the peripheral wall portion 51, and is irradiated to the illumination space. Here, the peripheral wall 51 includes a 1 st peripheral wall 511 (hereinafter, also referred to as a front wall) protruding outward below the housing portion 11 and a 2 nd peripheral wall 512 (hereinafter, also referred to as a right wall) housed in the housing portion 11 (see fig. 10, 11, and 13). Of the light transmitted through the 2 nd peripheral wall portion 512, the light transmitted through the portion of the 2 nd peripheral wall portion 512 near the upper end is blocked by the side plate 41 of the mounting member 4, and therefore is less likely to leak into the housing portion 11. The light transmitted through the portion of the 2 nd peripheral wall portion 512 near the upper end is reflected by the side surface (reflection surface) of the side plate 41 and is irradiated to the illumination space. Therefore, the gap 20 (see fig. 13) between the side plate 41 and the peripheral wall 51 in the light source unit 2 can be suppressed from being darkened (reduced in brightness). As a result, the light source unit 2 can suppress a decrease in brightness at the peripheral portion of the cover 5 to improve the uniformity of light. Further, since the lighting fixture 1 houses the upper end portion of the 2 nd peripheral wall 512 of the peripheral wall 51 of the light source unit 2 in the housing portion 11, the side plate 41 is hidden in the housing portion 11, and thus a reduction in appearance can be suppressed as compared with a case where the entire 2 nd peripheral wall 512 is exposed. The light source unit 2 may be configured such that the peripheral wall 51 is disposed outside the side plate 41.

The cover 5 is configured such that an inclination angle θ 2 of the 2 nd peripheral wall portion 512 with respect to the vertical direction is smaller than an inclination angle θ 1 of the 1 st peripheral wall portion 511 with respect to the thickness direction (vertical direction) of the mounting substrate 31 (see fig. 13). When the surface of the peripheral wall 51 is crimped, it is necessary to apply draft to the peripheral wall 51. However, if the inclination angle of the surface of the peripheral wall 51 is increased to impart the draft, the distance between the peripheral wall 51 and the side wall 111 of the housing portion 11 is also increased. Further, the gap between the apparatus body 10 and the light source unit 2 becomes more conspicuous as the distance between the peripheral wall 51 and the side wall 111 of the housing portion 11 becomes larger, and therefore the appearance of the lighting apparatus 1 may be impaired.

Therefore, it is preferable that the peripheral wall portion 51 is divided into a 1 st peripheral wall portion 511 on a side close to the bottom portion 50 (a side far from the mounting member 4) and a 2 nd peripheral wall portion 512 on a side far from the bottom portion 50 with respect to the 1 st peripheral wall portion 511 (a side close to the mounting member 4). If the inclination angle θ 1 of the 1 st peripheral wall portion 511 is set to an angle necessary for draft and the inclination angle θ 2 of the 2 nd peripheral wall portion 512 is set to an angle smaller than the inclination angle θ 1 of the 1 st peripheral wall portion 511, the surface of the peripheral wall portion 51 can be easily wrinkled without making the gap between the device body 10 and the light source unit 2 conspicuous.

Here, since the linear expansion coefficient of the synthetic resin material forming the cover 5 is considerably higher (for example, about 6 times to 7 times) than the linear expansion coefficient of the metal material forming the mounting member 4, the expanded cover 5 may come into contact with the side plate 41. If the peripheral wall 51 of the inflated cover 5 abuts against the side plate 41, abnormal noise may be generated from the cover 5 or the cover 5 may be plastically deformed. Therefore, the light source unit 2 is preferably provided with the gap 20 along the direction (the left-right direction and the front-rear direction) orthogonal to the thickness direction of the attachment plate 40 between the peripheral wall 51 (the 2 nd peripheral wall 512) and the side plate 41. Preferably, the gap 20 is set to a size at least to such an extent that the peripheral wall portion 51 of the inflated cover 5 does not contact the side plate 41, or that excessive force is not received from the side plate 41 even if the peripheral wall portion 51 contacts.

Here, when the light source unit 2 is housed in the housing portion 11, the power supply unit 6 and the wireless communication unit 7 attached to the 2 nd surface 402 of the attachment plate 40 may come into contact with the bottom wall 110 of the housing portion 11, and stress may be applied to the power supply unit 6 and the wireless communication unit 7 from the bottom wall 110. If stress is applied to the power supply unit 6 and the wireless communication unit 7, there is a possibility that defects such as scratches may be generated in the case 60 of the power supply unit 6 and the case 70 of the wireless communication unit 7. However, since the restricting piece 115 is provided in the device main body 10, the position of the light source unit 2 in the housing portion 11 is restricted by the light source unit 2 contacting the lower end of the restricting piece 115 through the 2 nd surface 402 of the attachment plate 40 (see fig. 22). Therefore, the power supply unit 6 and the wireless communication unit 7 do not contact the attachment plate 40, and stress applied from the device body 10 to the light source unit 2 can be reduced.

The restricting piece 115 is formed to protrude from the side wall 111 of the housing portion 11 into the housing portion 11. Therefore, the housing portion 11 can be made smaller than in the case where the regulating piece 115 protrudes out of the housing portion 11. Further, each of the plurality of regulating pieces 115 is formed to protrude from 2 side walls 111 (the left side wall 111 and the right side wall 111) which are not adjacent among the 4 side walls 111, respectively. Therefore, in a state where the light source unit 2 is attached to the device body 10, the plurality of regulating pieces 115 contact the 2 nd surface 402 of the attachment plate 40, and thereby the light source unit 2 can be reduced in rattling and prevented from being inclined with respect to the device body 10. Further, since the regulating pieces 115 are disposed at the positions of the side walls 111 near the corners of the bottom wall 110, the light source unit 2 can be further reduced in rattling and prevented from being inclined with respect to the device body 10. Among the 4 side walls 111, 2 side walls 111 (the side walls 111 on both left and right sides) not having the hook portion 114 are provided with a plurality of regulating pieces 115. Therefore, the plurality of regulating pieces 115 abut against both left and right ends of the 2 nd surface 402 of the mounting plate 40, and thereby the swing (rattling) of the light source unit 2 about the 2 mounting tools 8 as fulcrums can be suppressed.

Here, the attachment spring 80 of the light source unit 2 protrudes out of the housing portion 11 through a hole of the hook portion 114 provided in the side wall 111 of the housing portion 11 in a state where the light source unit 2 is attached to the device body 10 (see fig. 2). That is, since the arm portions of the plurality of fixing springs do not protrude upward beyond the top surface of the fixture body as in the conventional example, the lighting fixture 1 does not need to provide a space above the fixture body 10 for retracting the 1 st arm portion 82 to which the spring 80 is attached. As a result, the lighting fixture 1 can be easily improved in workability in the construction work.

Further, the 1 st arm portion 82 is formed so as to be curved in a direction (downward) away from the bottom wall 110 in the insertion direction (up-down direction) of the light source unit 2 as being away from the mounting member 4 in the direction (front-back direction) protruding from the mounting member 4. Therefore, it is possible to avoid a situation in which the workability of the construction work is lowered due to interference between the 1 st arm portion 82 of the attachment spring 80 protruding from the side wall 111 and the member above the tool main body 10.

The light source unit 2 includes a plurality of (e.g., 2) mounting springs 80. At least 1 of the 2 mounting springs 80 is disposed on each of the 2 opposing sides (the front side and the rear side) of the mounting member 4. Therefore, when the worker removes the light source unit 2 from the device body 10, the worker only needs to pull down the light source unit 2 and then pull out the attachment springs 80 from the holes of the hook portion 114, and therefore, the worker can easily improve the workability when removing the light source unit 2 from the device body 10. Further, the 2 nd surface 402 of the attachment plate 40 of the attachment member 4 abuts against the lower end of the regulating piece 115 of the housing portion 11, whereby the position of the light source unit 2 in the housing portion 11 is regulated (see fig. 7). Therefore, in the lighting fixture 1, the power supply unit 6 does not abut against the attachment plate 40, and the stress applied from the fixture body 10 to the light source unit 2 can be reduced.

Here, the fixture body 10 of the lighting fixture 1 includes 2 members, i.e., the housing portion 11 and the reflecting member 12. The lighting device 1 is configured such that the light source unit 2 is supported by the housing portion 11 attached to the hanger bolt 90. Therefore, the mechanical strength for supporting the device body 10 and the light source unit 2 is required for the housing portion 11, and the mechanical strength is not required for the reflection member 12. Therefore, the thickness of the metal plate forming the reflecting member 12 can be made thinner than the thickness of the metal plate forming the housing 11. As a result, in the lighting fixture 1, when the reflecting member 12 is formed of a metal plate having a smaller plate thickness than the metal plate forming the housing portion 11, the manufacturing cost of the fixture body 10 can be reduced, as compared with the case where the housing portion 11 and the reflecting member 12 are formed of metal plates having the same plate thickness.

The side plate 121 of the reflecting member 12 has a through hole 124 through which the mounting spring 80 of the light source unit 2 is inserted. Therefore, even if strong oscillation occurs due to an earthquake and the locking of the locking portion 112 is released, the attachment spring 80 is caught by the upper edge of the through hole 124 in the side plate 121, and therefore the reflecting member 12 is less likely to fall down.

The 2 mounting tools 8 (the 1 st mounting tool 8A and the 2 nd mounting tool 8B) included in the light source unit 2 are not necessarily of the same structure. For example, as a modification of the light source unit 2, as shown in fig. 23, the one-side attachment tool 8 (the 2 nd attachment tool 8B) may have a hook-shaped hook member 86 instead of the attachment spring 80. The hook part 86 is formed in a hook shape and protrudes outward from the end of the mounting member 4 of the light source unit 2. The hook member 86 is hooked on the hook portion 114B of the side wall 111D of the device main body 10, and can temporarily hold the light source unit 2 on the device main body 10. The light source unit 2 is supported by the housing portion 11 of the device body 10 by hooking the hook portion 114B of the rear side wall 111C with the hook member 86 and hooking the mounting spring 80 of the 1 st mounting tool 8A with the hook portion 114A of the front side wall 111C.

In the above embodiment, the device main body 10 has the pair of coupling portions 114, but the device main body 10 may have a plurality of pairs of coupling portions 114, 114. For example, the front side wall 111C and the rear side wall 111D may have 2 or more hooks (coupling portions) 114. For example, in each of the side walls 111C and 111D, 2 or more hooks 114 may be provided in a row along the longitudinal direction of the side wall. In this case, the light source unit 2 may have a plurality of pairs of mounting tools 8 and 8 coupled to the plurality of pairs of coupling portions 114 and 114, respectively. In this way, in the lighting fixture 1, the light source unit 2 may be attached to the fixture body 10 by coupling at least one pair of attachment tools 8 and 8 to at least one pair of coupling portions 114 and 114 of the fixture body 10.

Further, since the attachment spring 80 is a torsion coil spring having a basic shape with only 1 coil part 81, it is difficult to rotate the 1 st arm part 82 in a state where the hook piece 820 is parallel to the axis of the coil part 81. Therefore, the mounting component 85 of the mounting tool 8 includes: a 1 st support portion 851 that supports the coil portion 81 so as to be rotatable about the axis thereof; and a 2 nd support portion 852 configured to rotatably support the 1 st arm portion 82 with an end portion thereof as a fulcrum. The 2 nd support portion 852 is configured to dispose a fulcrum of rotation of the 1 st arm portion 82 at a position of the shaft of the coil portion 81 close to (the mounting plate 40 of) the mounting member 4. Therefore, since the flexure of the hook piece 820 and the 2 nd arm piece 822 when the force is applied to the 1 st arm 82 and the arm is rotated is eliminated, the hook piece 820 can be brought into a state of being substantially parallel to the axis of the coil part 81. If the hook piece 820 is in a state of being substantially parallel to the axis of the coil part 81, the worker easily inserts the hook piece 820 into the hole of the hook part 114.

Several modifications are listed below. Hereinafter, the above-described embodiment will be referred to as "basic example". The modifications described below can also be applied in combination with the basic examples described above as appropriate.

In the basic example, the number of the mounting holes 420 is 4, and the number of the engagement pieces 521 corresponding to each of the 4 mounting holes 420 is also 4. However, the number of the mounting holes 420 and the engaging pieces 521 is not particularly limited as long as it is 1 or more. For example, the number of the mounting holes 420 and the engaging pieces 521 may be only 1. In this case, the cover 5 may be fixed to the mounting member 4 by caulking only at one portion and may be fixed to the other portion by screwing or the like.

The number of the mounting holes 420 and the number of the engagement pieces 521 do not need to be the same, and the number of the mounting holes 420 may be larger than the number of the engagement pieces 521. In short, the mounting hole 420 through which the engaging piece 521 is inserted may be appropriately selected from the plurality of mounting holes 420.

In the basic example, each mounting portion 52 of the cover 5 is provided at the center in the longitudinal direction of the upper end of the corresponding wall portion of the 4 wall portions constituting the peripheral wall portion 51. However, the present invention is not limited to this, and each mounting portion 52 may be provided at a position closer to one end in the longitudinal direction (or a position closer to the other end) of the upper end of the corresponding wall portion.

However, if considering the suppression of the deformation of the cover 5 due to heat as described above, it is preferable that the 2 mounting portions 52 are disposed at positions symmetrical to the central axis C1 when viewed along the central axis C1 when the front wall portion 511 and the rear wall portion 513 are provided. For example, when one of the 2 mounting portions 52 is provided at an intermediate position between the center in the longitudinal direction and the right end of the upper end of the front wall portion 511, the other of the 2 mounting portions 52 is preferably provided at an intermediate position between the center in the longitudinal direction and the left end of the upper end of the rear wall portion 513.

Similarly, when 2 mounting portions 52 are provided on the right wall portion 512 and the left wall portion 514, the mounting portions are preferably disposed at positions symmetrical with respect to the central axis C1 when viewed along the central axis C1. For example, when one of the 2 mounting portions 52 is provided at an intermediate position between the center and the front end in the longitudinal direction at the upper end of the right wall portion 512, the other of the 2 mounting portions 52 is preferably provided at an intermediate position between the center and the rear end in the longitudinal direction at the upper end of the left wall portion 514.

In the present example, each of the mounted portions 42 includes the mounting piece 423 and the positioning piece 424, but these are not essential components of the light source unit 2 and may not be provided.

In the basic example, each mounting portion 52 has the projecting piece 520 and the projection 522, but these are not essential components of the light source unit 2 and may not be provided.

In the basic example, the bottom portion 50 of the cover 5 is formed in a square shape having substantially the same shape as the attachment plate 40 when viewed in the thickness direction thereof, and the peripheral wall portion 51 of the cover 5 is formed in a square frame shape when viewed in the thickness direction of the bottom portion 50. However, the shape thereof is not particularly limited, and the mounting plate 40 and the bottom portion 50 may be formed in a rectangular shape, and the peripheral wall portion 51 may be formed in a rectangular frame shape.

The shape of the mounting plate 40 and the bottom portion 50 is not limited to a rectangular shape (square shape or rectangular shape), and may be, for example, a circular shape. The shape of the peripheral wall 51 is not limited to a rectangular frame shape (a square frame shape or a rectangular frame shape), and may be, for example, a circular frame shape.

In the light source unit 2, the number of the LED modules 3 is not particularly limited. The light source unit 2 does not necessarily include the LED module 3, the cover 5, and the wireless communication unit 7.

As is clear from the above-described embodiment and modification, the light source unit (2) according to claim 1 includes: a solid-state light source module (LED module 3) in which 1 or more solid-state light sources (LEDs 30) are mounted on a mounting surface of a mounting substrate (31); and a mounting member (4) that mounts the LED module (3). The light source unit (2) is provided with a cover (5), and the cover (5) has light-transmitting properties and is mounted on the mounting member (4) so as to cover the LED module (3). The mounting member (4) has: a flat plate-shaped mounting board (40) on which the LED module (3) is mounted on the front surface (lower surface); and a side plate (41) protruding from the edge of the mounting plate (40) toward the lower surface side. The cover (5) is formed in a box shape having a bottom (50) facing the LED module (3) and a peripheral wall (51) protruding from the periphery of the bottom (50) toward the mounting board (40). The side plate (41) protrudes to a height at which the LED module (3) is hidden when viewed from a direction (left-right direction and front-rear direction) orthogonal to the thickness direction (up-down direction) of the mounting plate (40).

The light source unit (2) according to claim 1 can suppress a decrease in brightness at the peripheral portion of the cover (5) by reflecting a part of the light emitted from the LED module 3 and transmitted through the peripheral wall portion (51) by the side plate (41).

The light source unit (2) according to claim 2 can be realized by a combination with the light source unit (1). In the light source unit (2) according to claim 2, the peripheral wall portion (51) is preferably disposed between the LED module 3 and the side plate (41) when viewed from a direction orthogonal to the thickness direction of the mounting plate (40).

The light source unit (2) according to claim 2 is configured such that the peripheral wall portion (51) is disposed inside the side plate (41), and the peripheral wall portion (51) can be protected by the side plate (41).

The light source unit (2) according to claim 3 can be realized by a combination with the 1 st or 2 nd aspect. In the light source unit (2) according to claim 3, the peripheral wall portion (51) preferably includes a 1 st peripheral wall portion (511) and a 2 nd peripheral wall portion (512) that are arranged along the thickness direction of the mounting plate (40). Preferably, the 2 nd peripheral wall portion (512) is located closer to the mounting plate (40) than the 1 st peripheral wall portion (511). Preferably, the 1 st circumferential wall portion (511) and the 2 nd circumferential wall portion (512) are inclined so as to approach the LED module 3 as they are separated from the mounting board (40) along the thickness direction of the mounting board (40). Preferably, the 2 nd peripheral wall portion (512) is inclined at an angle (θ 2) smaller than the angle (θ 1) at which the 1 st peripheral wall portion (511) is inclined (θ 2< θ 1).

The light source unit (2) according to claim 3 is easy to crimp the surface of the peripheral wall (51) without making the gap with the device body (10) conspicuous.

The light source unit (2) according to claim 4 can be realized by combination with any one of claims 1 to 3. The light source unit (2) according to claim 4 preferably includes a metal mounting member (4) and a synthetic resin cover (5). Preferably, a gap (20) is provided between the peripheral wall (51) and the side plate (41) in a direction perpendicular to the thickness direction of the mounting plate (40).

The light source unit (2) according to claim 4 can prevent the peripheral wall (51) of the inflated cover (5) from easily touching the side plate (41).

As is clear from the above-described embodiments and modifications, the lighting apparatus (1) according to claim 5 includes the light source unit (2) according to any one of claims 1 to 4, and the apparatus body (10) that supports the light source unit (2).

The lighting fixture (1) according to claim 5 can suppress a decrease in brightness at the peripheral portion of the cover (5) by reflecting a portion of the light emitted from the LED module 3 and transmitted through the peripheral wall portion (51) by the side plate (41).

The lighting fixture (1) according to claim 6 can be realized by combining with the 5 th aspect. In the lighting device (1) according to claim 6, it is preferable that the device body (10) includes: a box-shaped housing section (11) having an opening on one surface (lower surface); and a reflecting member (12) protruding from the edge of the lower surface of the housing section (11). Preferably, the light source unit (2) is supported by the device body (10) such that the side plate (41) is housed in the housing section (11) and at least a part of the peripheral wall section (51) protrudes from the lower surface (of the housing section (11)) to the outside of the housing section (11).

In the lighting device (1) according to claim 6, the side plate (41) of the attachment member (4) is hidden in the housing section (11) of the device body (10), and thus a reduction in the appearance can be suppressed compared to the case where the entire peripheral wall section (51) is exposed.

The lighting fixture (1) according to claim 7 can be realized by combining with the lighting fixture (5). In the lighting fixture (1) according to claim 7, the light source unit (2) preferably includes a mounting member (4) that is formed in a plate shape and on which the LED module 3 is mounted, and a mounting spring (80). Preferably, the mounting spring (80) is constituted by a torsion coil spring having a coil portion (81) and an arm portion (1 st arm portion 82). Preferably, the 1 st arm 82 is formed in a U-shape. Preferably, the mounting spring (80) supports the coil section (81) and the end of the 1 st arm section (82) on the mounting member (4) in a state where the 1 st arm section (82) is projected from the mounting member (4). Preferably, the device body (10) includes: a housing part (11) formed in a box shape having an opening on one surface, through which a part of the light source unit (2) including the mounting member (4) is inserted into the housing part (11); and a hook part (114) to which the mounting spring (80) is hooked, the hook part (114). Preferably, the housing part (11) has: a flat-plate-shaped bottom wall (110) that faces the mounting member (4) along the direction of insertion of the light source unit (2); and a side wall (111) rising from the periphery of the bottom wall (110). Preferably, the hook portion (114) has a hole (1143) penetrating the side wall (111) in the thickness direction of the side wall (111), and the 1 st arm portion (82) to which the spring (80) is attached is hooked on the edge of the hole (1143) in the side wall (111). Preferably, the light source unit (2) is supported by the device body (10) by the spring force of the attachment spring (80) in a state where the 1 st arm (82) is hooked on the hook portion (114).

In the lighting apparatus (1) according to claim 7, the arm portions of the plurality of fixing springs do not protrude upward beyond the top surface of the apparatus main body, and there is no need to provide a space above the apparatus main body (10) for retracting the 1 st arm portion (82) to which the spring (80) is attached. As a result, the lighting apparatus (1) according to claim 7 can easily improve workability of the construction work.

The lighting fixture (1) according to claim 8 can be realized by combining with the lighting fixture according to claim 5. In the lighting fixture (1) according to claim 8, the light source unit (2) preferably includes a light source (LED module 3), a mounting member (4) for mounting the LED module 3, and at least 1 mounting tool (8). Preferably, the device body (10) is formed in a box shape having an opening on one surface. Preferably, the device body (10) includes: a housing section (11) into which at least a part of the light source unit (2) including the mounting member (4) is inserted through the opening section (11); and a hook part (114) to which a part of the mounting tool (8) (the mounting spring (80)) is hooked, the hook part (114). Preferably, the device body (10) includes a regulating piece (115), and the regulating piece (115) regulates the position of the light source unit (2) in the housing section (11). Preferably, the restriction piece (115) is disposed at a position facing the mounting member (4) along the insertion direction (vertical direction) of the LED module 3.

Preferably, in the lighting fixture (1) according to claim 8, the position of the light source unit (2) in the housing section (11) is regulated by the contact of the 2 nd surface (402) of the attachment plate (40) with the regulating piece (115). As a result, in the lighting apparatus (1) according to claim 8, the light source unit (2) does not abut against the attachment plate (40), and stress applied from the apparatus body (10) to the light source unit (2) can be reduced.

The lighting fixture (1) according to claim 9 can be realized by combining with the lighting fixture (5). In the lighting fixture (1) according to claim 9, the light source unit (2) preferably includes: a light source (LED 30); a mounting member (4) formed in a plate shape and mounting the LED (30); and a mounting tool (8). Preferably, the device body (10) includes: a housing section (11) fixed to a structure (hanger bolt 90) provided on a ceiling (ceiling body 9); and a reflecting member (12) that is coupled to the housing section (11) and adjusts the light distribution of the light emitted by the light source unit (2). Preferably, the housing part (11) has a hook part (114), and a part of the mounting tool (8) (the mounting spring 80 or the hook part 86) is hung on the hook part (114).

In the lighting device (1) according to claim 9, the storage section (11) is required to have mechanical strength for supporting the device body (10) and the light source unit (2), and the reflection member (12) is not required to have such mechanical strength. Therefore, the thickness of the metal plate forming the reflecting member (12) can be made thinner than the thickness of the metal plate forming the housing section (11). As a result, in the lighting fixture (1) according to claim 9, when the reflecting member (12) is formed of a metal plate having a thickness smaller than that of the metal plate forming the housing portion (11), the manufacturing cost of the fixture body (10) can be reduced, as compared to when the housing portion (11) and the reflecting member (12) are formed of metal plates having the same thickness.

The light source unit (2) according to claim 10 is realized by combining with the light source unit according to claim 1. In the light source unit (2) according to claim 10, it is preferable that: a mounting member (4) for mounting the LED module (3); and a cover (5) that is translucent and is supported by the mounting member (4) so as to cover the LED module (3). Preferably, the mounting member (4) has: a flat plate-shaped mounting board (40) on which the LED module (3) is mounted on the 1 st surface (401); and a side plate (41) which protrudes from the edge of the mounting plate (40) toward the 1 st surface (401). Preferably, the cover (5) is formed in a box shape having a bottom portion (50) facing the LED module (3) and a peripheral wall portion (51) protruding from the peripheral edge of the bottom portion (50) toward the mounting board (40). Preferably, the mounting plate (40) has a mounting hole (420) penetrating in the thickness direction thereof. Preferably, the peripheral wall part (51) has an engaging piece (521) that protrudes from the 2 nd surface (402) of the mounting plate (40) on the opposite side of the 1 st surface (401) through the mounting hole (420). Preferably, the cover (5) is supported by the mounting member (4) by engaging an engaging piece (521) protruding from the 2 nd surface (402) with a part of the mounting plate (40).

In the light source unit (2) according to claim 10, an engagement piece (521) that protrudes from the 2 nd surface (402) through an attachment hole (420) of the attachment plate (40) engages with a part of the attachment plate (40), and the cover (5) is supported by the attachment member (4). Therefore, the cover (5) can be attached to the attachment member (4) while suppressing the use of attachment parts and other components such as screws. As a result, the light source unit (2) according to claim 10 can reduce the number of components of the light source unit (2) as a whole to reduce the manufacturing cost while maintaining the quality.

The lighting fixture (1) according to claim 11 is realized by combining with the lighting fixture according to claim 5. In the lighting fixture (1) according to claim 11, the light source unit (2) preferably includes: a power supply unit (6) that lights up the LED (30); a mounting tool (8A); and an attachment plate (40) to which the power supply unit (6) and the attachment tool (8A) are attached. Preferably, the device body (10) has a coupling portion (114A) that is coupled to the attachment tool (8A) for attaching the light source unit (2) to the device body (10). Preferably, the power supply unit (6) and the mounting tool (8A) are arranged in a predetermined direction on one surface (the 1 st surface 401) of the mounting plate (40) so that the charging portion (the electric wire 200) does not exist between the power supply unit (6) and the mounting tool (8A).

The lighting device (1) according to claim 11 can improve the safety of the work of attaching the light source unit (2) to the device body (10).

The lighting fixture (1) according to claim 12 can be realized by combining with the lighting fixture according to claim 5. In the lighting fixture (1) according to claim 12, the light source unit (2) preferably includes an attachment plate (40) to which the LEDs (30) are attached, and at least a pair of attachment tools (8). Preferably, the device body (10) has: a bottom wall (110); and at least one pair of coupling portions (114 ) located at both ends in a direction orthogonal to the thickness direction of the bottom wall (110). Preferably, the light source unit (2) is attached to the device body (10) by coupling at least one pair of attachment tools (8, 8) to at least one pair of coupling portions (114 ), respectively. Preferably, the bottom wall (110) has a plurality of bolt insertion holes (1101) through which the hanger bolts (90) are inserted. Preferably, the plurality of bolt insertion holes (1101) are aligned along a 1 st straight line (L10) on a plane orthogonal to the thickness direction of the bottom wall (110). Preferably, the 1 st straight line (L10) is orthogonal to the 2 nd straight line (L20) connecting at least one pair of joining portions (114 ) to each other in the plane.

The lighting device (1) according to claim 12 can easily perform the work of attaching the light source unit (2) to the device body (10).

Claims (5)

1. A light source unit is characterized by comprising:

a solid-state light source module in which 1 or more solid-state light sources are mounted on a mounting surface of a mounting substrate;

a mounting member mounting the solid-state light source module; and

a cover having translucency and attached to the mounting member so as to cover the solid-state light source module,

the mounting member has:

a flat plate-shaped mounting plate on the surface of which the solid-state light source module is mounted; and

a side plate protruding from an edge of the mounting plate toward the surface side,

the cover is formed in a box shape having a bottom portion facing the solid-state light source module and a peripheral wall portion protruding from a peripheral edge of the bottom portion toward the mounting plate,

the side plate protrudes to a height at which the solid-state light source module is hidden when viewed from a direction orthogonal to a thickness direction of the mounting plate,

the peripheral wall portion has a 1 st peripheral wall portion and a 2 nd peripheral wall portion arranged in a thickness direction of the mounting plate,

the 2 nd peripheral wall portion is located closer to the mounting plate than the 1 st peripheral wall portion,

The 1 st peripheral wall portion and the 2 nd peripheral wall portion are inclined so as to approach the solid-state light source module as being apart from the mounting plate in a thickness direction of the mounting plate,

the 2 nd peripheral wall portion is inclined at an angle smaller than that of the 1 st peripheral wall portion.

2. The light source unit according to claim 1,

the peripheral wall portion is disposed between the solid-state light source module and the side plate when viewed from a direction orthogonal to a thickness direction of the mounting plate.

3. The light source unit according to claim 1 or 2,

comprises the metal mounting member and the synthetic resin cover,

a gap is provided between the peripheral wall portion and the side plate along a direction orthogonal to a thickness direction of the mounting plate.

4. A lighting device, comprising:

a light source unit as claimed in any one of claims 1 to 3; and

and an appliance main body supporting the light source unit.

5. The lighting apparatus according to claim 4,

the appliance main body has:

a box-shaped housing part with one side opened; and

a reflecting member protruding from an edge of the one surface of the housing portion,

The light source unit is supported by the device body such that the side plate is housed in the housing portion and at least a portion of the peripheral wall portion protrudes from the one surface to the outside of the housing portion.

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