CN209839863U - Lighting apparatus - Google Patents

Abstract

Provided is a lighting device capable of reducing unevenness of light of a light-transmitting cover. A lighting fixture (2) is provided with: a 1 st light-emitting unit (54); a 2 nd light emitting unit (56) disposed so as to surround the 1 st light emitting unit (54); a light-transmitting cover (20) which is disposed so as to face the 1 st light-emitting part (54) and which transmits light from the 1 st light-emitting part (54); a light guide plate (16) which is disposed so as to surround the light-transmitting cover (20), and into which light from the 2 nd light-emitting unit (56) enters and from which the entered light is emitted to the outside; and a mounting member (18) which is mounted on the light-transmitting cover (20), is disposed so as to cover a part of the light guide plate (16) in a plan view, and is formed of a material having light-transmitting properties.

Description

Lighting apparatus

Technical Field

The present invention relates to a lighting device for illuminating rooms and the like.

Background

As one of lighting devices for illuminating a room or the like, a dome lamp is known (for example, see patent document 1). The ceiling lamp includes an appliance body mounted on a ceiling in a room, a light emitting module supported by the appliance body, and a translucent cover mounted to the appliance body so as to face the light emitting module. The light-transmitting cover diffuses light from the light emitting module.

Patent document 1: japanese patent laid-open publication No. 2016-186901

However, the conventional dome lamp has a problem that light unevenness occurs in the light-transmitting cover.

SUMMERY OF THE UTILITY MODEL

The present invention has been made in view of the above problems, and an object of the present invention is to provide a lighting device capable of reducing unevenness of light on a light-transmitting cover.

In order to solve the above problem, a lighting device according to an aspect of the present invention includes: 1 st light emitting part; a 2 nd light emitting unit disposed so as to surround the 1 st light emitting unit; a light-transmitting cover which is disposed so as to face the 1 st light-emitting part and transmits light from the 1 st light-emitting part; a light guide plate disposed so as to surround the light-transmitting cover, into which light from the 2 nd light-emitting unit is incident, and which emits the incident light to the outside; and a mounting member mounted on the light-transmitting cover, disposed so as to cover a part of the light guide plate in a plan view, and formed of a material having light-transmitting properties.

In the lighting apparatus, the light guide plate may include: a curved portion formed to have an opening diameter that increases from one end portion toward the other end portion, and guiding light from the one end portion toward the other end portion; an incident portion formed at the one end portion of the curved portion, on which light from the 2 nd light emitting portion is incident; and an emitting portion that extends radially outward from the other end portion of the curved portion, is formed in a ring shape in a plan view, and emits light from the curved portion; the mounting member is disposed so as to cover an inner peripheral surface of the bent portion.

Further, the lighting fixture may further include: a 1 st housing for supporting the 1 st light emitting unit and the 2 nd light emitting unit; an annular reflecting member having a notch portion and disposed so as to cover an outer peripheral surface of the curved portion; and a fixing member disposed at the cutout portion to fix the reflecting member to the 1 st case; the 1 st light emitting unit includes a plurality of light emitting elements arranged in a ring shape along a circumferential direction of the reflecting member; a part of the plurality of light emitting elements is disposed adjacent to the notch portion.

The lighting apparatus may further include a 2 nd housing, and the 2 nd housing may support the 1 st housing and be disposed such that a part of the 1 st housing is exposed to the outside.

The lighting apparatus may further include an engaging mechanism for engaging the translucent cover with the mounting member by rotating the translucent cover with respect to the mounting member.

In the lighting apparatus, the engaging mechanism may include: an annular mounting portion formed on the mounting member; a 1 st groove portion formed in the mounting portion, extending in a circumferential direction of the mounting portion, and having an opening at one end in a longitudinal direction; a 2 nd groove portion formed in the mounting portion, extending from the other end portion in the longitudinal direction of the 1 st groove portion in the circumferential direction, and having a width smaller than that of the 1 st groove portion; and a fastening part formed on the light-transmitting cover and protruding towards the mounting part; when the light-transmitting cover is rotated relative to the mounting member, the engaging portion is engaged with the 2 nd groove portion after moving from the one end portion to the other end portion of the 1 st groove portion.

In the lighting device, the mounting portion may have a tapered surface whose diameter increases in a direction from the 1 st light emitting portion toward the mounting portion.

The lighting apparatus may further include an annular sealing member that is attached to an outer peripheral portion of the attachment member and is formed of a material having translucency; the sealing member seals a space between the light guide plate and the mounting member, and seals a space between the mounting member and the light-transmitting cover.

Further, the lighting device may further include a circuit unit electrically connected to the 1 st light emitting unit and the 2 nd light emitting unit; the 1 st light emitting unit is disposed so as to surround the circuit unit; the circuit unit is disposed so as not to block light from the 1 st light emitting unit.

Further, the lighting fixture may further include: a sensor disposed adjacent to an outer peripheral portion of the mounting member; and a flexible substrate electrically connected to the sensor and disposed between the mounting member and the light guide plate.

Effect of the utility model

According to the utility model discloses a technical scheme's lighting apparatus can reduce the light unevenness on the printing opacity cover.

Drawings

Fig. 1 is a perspective view showing an appearance of a lighting fixture according to embodiment 1 on a floor side.

Fig. 2 is a perspective view showing the appearance of the lighting apparatus according to embodiment 1 on the ceiling side.

Fig. 3 is an exploded perspective view showing a lighting fixture according to embodiment 1.

Fig. 4 is a sectional view of the lighting device according to embodiment 1 taken along line IV-IV in fig. 1.

Fig. 5 is a sectional perspective view of the lighting fixture according to embodiment 1 taken along line V-V of fig. 1.

Fig. 6 is a cross-sectional view of the lighting fixture according to embodiment 1, which is partially enlarged in fig. 4.

Fig. 7 is a diagram showing the front side of the substrate unit according to embodiment 1.

Fig. 8 is a view showing the back side of the substrate unit according to embodiment 1.

Fig. 9 is an enlarged perspective view of a part of the decorative cover according to embodiment 1.

Fig. 10 is an enlarged perspective view of the engagement mechanism according to embodiment 1.

Fig. 11 is an enlarged cross-sectional view of a part of the lighting fixture according to embodiment 2.

Description of the reference symbols

2. 2A lighting apparatus

14 decorative cover (reflection parts)

16 light guide plate

18 mounting component

20 light-transmitting cover

22 st shell

24 nd 2 casing

52 circuit part

54 No. 1 light emitting part

56 nd 2 nd light emitting part

68. 68a No. 1 light emitting element (light emitting element)

80 notch part

82 screw (fixed part)

86 bending part

88 incident part

90 injection part

92. 96 sealing member

98 mounting part

100 conical surface

102 st groove part

102a one end portion

102b another end portion

104 nd groove part

110 clamping mechanism

112 engaging part

120 sensor

122 flexible substrate

Detailed Description

Hereinafter, embodiments of the present invention will be described. The embodiments described below are all specific preferred embodiments of the present invention. Therefore, the numerical values, shapes, materials, constituent elements, arrangement positions of constituent elements, connection forms, and the like shown in the following embodiments are examples, and do not limit the present invention. Therefore, among the components of the following embodiments, components that are not recited in the independent claims representing the uppermost concept will be described as arbitrary components.

The drawings are schematic and not necessarily strictly illustrated. In the drawings, substantially the same components are denoted by the same reference numerals, and redundant description is omitted or simplified.

(embodiment mode 1)

The following describes the lighting fixture according to embodiment 1.

[ 1-1. integral Structure of Lighting apparatus ]

The overall configuration of the lighting fixture 2 according to embodiment 1 will be described with reference to fig. 1 to 5. Fig. 1 is a perspective view showing an appearance of a lighting fixture 2 according to embodiment 1 on a floor side. Fig. 2 is a perspective view showing the appearance of the lighting apparatus 2 according to embodiment 1 on the ceiling 4 side. Fig. 3 is an exploded perspective view showing the lighting fixture 2 according to embodiment 1. Fig. 4 is a sectional view of the lighting fixture 2 according to embodiment 1 taken along line IV-IV in fig. 1. Fig. 5 is a sectional perspective view of the lighting fixture 2 according to embodiment 1 taken along line V-V in fig. 1.

The lighting fixture 2 is, for example, a ceiling lamp for illuminating the interior of a room, and is installed on a ceiling 4 (see fig. 3) of the interior of the room. As shown in fig. 1 to 5, the lighting fixture 2 includes a fixture body 6, an adapter 8, a substrate unit 10, a lens cover 12, a decorative cover 14 (an example of a reflective member), a light guide plate 16, a mounting member 18, and a light-transmitting cover 20.

Hereinafter, each component of the lighting fixture 2 will be described in detail. In each of the drawings shown below, the negative side of the Z axis indicates the ceiling 4 side, and the positive side of the Z axis indicates the floor (not shown) side. For the sake of convenience of explanation, the lighting fixture 2 is illustrated in an upside-down posture in fig. 1, 3 to 6, and 9, which is opposite to the posture in normal use.

[ 1-2. apparatus body ]

First, the device main body 6 will be described with reference to fig. 2 to 6. Fig. 6 is a cross-sectional view of the lighting fixture 2 according to embodiment 1, which is partially enlarged in fig. 4.

The device main body 6 is a housing for supporting the substrate unit 10, the light guide plate 16, and the like. As shown in fig. 2 to 6, the device main body 6 includes a 1 st case 22 and a 2 nd case 24.

As shown in fig. 5 and 6, the 1 st case 22 includes a housing portion 26 and a 1 st support portion 28. The housing 26 is flared from one end (end on the ceiling 4 side) toward the other end (end on the ground side). A circular opening 30 is formed at one end of the housing 26. The 1 st support portion 28 extends radially outward from the other end portion of the housing portion 26, and is formed in a ring shape in an XY plane view. The outer peripheral portion of the substrate unit 10 is supported on the ground surface side surface of the inner peripheral region 28a of the 1 st support portion 28. In the housing portion 26, a plurality of 2 nd circuit components 62 (described later) mounted on the inner peripheral portion of the substrate unit 10 are housed. The 1 st case 22 is formed into the above-described shape by press working a sheet metal such as an aluminum plate or a steel plate.

As shown in fig. 5 and 6, a protective cover 32 for protecting the adapter 8 is fixed to the peripheral edge of the opening 30 of the housing 26. The protective cover 32 is formed in a substantially cylindrical shape and is disposed so as to surround the adapter 8. The protective cover 32 is made of an insulating material such as resin. Further, an annular rib 34 is formed on the inner peripheral surface of the front end portion (end portion on the ground side) of the protective cover 32. Lead wires (not shown) electrically connected to the adapter 8 are housed in the protective cover 32 in a state of being bent along the ribs 34. This can prevent the lead wires from protruding from the front end of the protective cover 32 toward the ground surface and blocking light from the 1 st light emitting unit 54 (described later).

As shown in fig. 5 and 6, the 2 nd housing 24 has the 2 nd support portion 36 and the side wall portion 38, and is disposed on the ceiling 4 side of the 1 st housing 22. The 2 nd support part 36 is formed in a ring shape in the XY plane view. A circular opening 40 is formed in the inner peripheral portion of the 2 nd support portion 36. One end of the housing 26 of the 1 st case 22 is supported on the ground-side surface of the 2 nd support portion 36. The side wall portion 38 is flared from one end portion (end portion on the ceiling 4 side) toward the other end portion (end portion on the floor surface side). One end of the side wall 38 is connected to the outer periphery of the 2 nd support part 36. The other end of the side wall portion 38 is disposed in the vicinity of the surface of the 1 st support portion 28 of the 1 st housing 22 on the ceiling 4 side. Specifically, as shown in fig. 6, a gap 42 having a size of, for example, about 1 to 2mm is formed between the other end portion of the side wall portion 38 and the 1 st supporting portion 28 of the 1 st case 22. As shown in fig. 2 and 6, side wall portion 38 is disposed so that outer peripheral region 28b of 1 st support portion 28 of 1 st case 22 is exposed to the outside. The 2 nd casing 24 is formed into the above-described shape by press working a sheet metal such as an aluminum plate or a steel plate.

As shown in fig. 5 and 6, a holder 44 for attaching the appliance main body 6 to the adaptor 8 (described later) is fixed to the peripheral edge of the opening 40 of the 2 nd support portion 36. The holder 44 extends from the peripheral edge of the opening 40 of the 2 nd support portion 36 toward the ground surface side and is disposed inside the protective cover 32. As will be described later, the adapter 8 is detachably fitted in the holder 44.

As shown in fig. 2, a plurality of cushioning members 46 made of, for example, polyurethane or the like are attached to the surface of the 2 nd support portion 36 on the ceiling 4 side. The plurality of cushioning members 46 are arranged at intervals in the circumferential direction of the 2 nd support portion 36. When the lighting fixture 2 is installed on the ceiling 4 as described later, the plurality of cushioning members 46 are sandwiched between the fixture body 6 and the ceiling 4, thereby suppressing rattling of the fixture body 6.

As shown in fig. 5 and 6, a space 48 for dissipating heat from the substrate unit 10 is formed between the receiving portion 26 and the 1 st supporting portion 28 of the 1 st case 22 and the 2 nd supporting portion 36 and the side wall portion 38 of the 2 nd case 24. The heat from the substrate unit 10 is transferred to the air in the space 48 via the 1 st support portion 28 of the 1 st case 22, and is cooled by the air in the space 48. The air in the space 48 heated by the heat exchange with the heat from the substrate unit 10 is discharged to the outside through the gap 42 between the side wall portion 38 of the 2 nd casing 24 and the 1 st supporting portion 28 of the 1 st casing 22. Further, a part of the heat from the substrate unit 10 is transferred from the inner peripheral region 28a to the outer peripheral region 28b of the 1 st support portion 28 of the 1 st case 22, and is radiated to the atmosphere from the outer peripheral region 28b exposed to the outside. The space 48 may be used as a storage space for disposing various components such as a speaker.

[ 1-3. adapter ]

Next, the adapter 8 will be described with reference to fig. 3 to 6. The adapter 8 is used to detachably mount the appliance main body 6 to the ceiling lamp base body 50. As shown in fig. 3, the ceiling lamp base body 50 is provided in advance on the ceiling 4 in the room.

As shown in fig. 4 to 6, the adapter 8 is detachably fitted in the holder 44 of the device body 6. The adapter 8 is detachably attached to the ceiling lamp base 50. For the sake of convenience of explanation, fig. 2 and 4 to 6 show the ceiling lamp base body 50 in a state of being detached from the ceiling 4.

When the lighting fixture 2 is set to the ceiling 4 in a room, the user first mounts the adapter 8 to the ceiling lamp housing body 50. Then, the user inserts the adapter 8 into the holder 44 of the device body 6, and pushes up the device body 6 toward the ceiling 4, thereby fitting the holder 44 and the adapter 8. Thereby, the fixture body 6 is mounted to the ceiling 4 in the room via the adapter 8 and the ceiling lamp base body 50, and the lighting fixture 2 is installed to the ceiling 4 in the room.

The ceiling lamp base body 50 is electrically connected to a commercial power supply (not shown) disposed on the rear side of the ceiling 4 in the room via an electric wire (not shown). When the lighting fixture 2 is installed on the ceiling 4 in a room, ac power from a commercial power supply is supplied to the lighting fixture 2 via the electric wires and the ceiling lamp base body 50.

[ 1-4. substrate Unit ]

Next, the substrate unit 10 will be described with reference to fig. 3 to 8. Fig. 7 is a diagram showing the front side (ground side) of the substrate unit 10 according to embodiment 1. Fig. 8 is a diagram showing the back side (ceiling 4 side) of the substrate unit 10 according to embodiment 1.

As shown in fig. 7 and 8, the substrate unit 10 includes a circuit portion 52, and a 1 st light emitting portion 54 and a 2 nd light emitting portion 56 electrically connected to the circuit portion 52.

The circuit unit 52 is a circuit unit that generates electric power for lighting the 1 st light emitting unit 54 and the 2 nd light emitting unit 56 and controls lighting of the 1 st light emitting unit 54 and the 2 nd light emitting unit 56. As shown in fig. 7 and 8, the circuit portion 52 includes a substrate 58, a plurality of 1 st circuit components 60, and a plurality of 2 nd circuit components 62.

As shown in fig. 7 and 8, the substrate 58 is a printed wiring substrate on which a plurality of 1 st circuit components 60 and a plurality of 2 nd circuit components 62 are mounted, and is formed in a ring shape in an XY plane view. As shown in fig. 3 to 6, the substrate 58 is supported on the surface of the 1 st case 22 on the ground side of the 1 st support portion 28 while surrounding the protective cover 32. As the substrate 58, for example, a resin substrate, a metal base substrate, a ceramic substrate, a glass substrate, or the like can be used. The substrate 58 is not limited to a rigid substrate, and may be a flexible substrate.

As shown in fig. 7, a plurality of 1 st circuit components 60 are mounted on an inner peripheral region of the surface (ground-side surface) of the substrate 58. The 1 st circuit components 60 are Surface Mount (SMD) type chip components, and include, for example, a chip ceramic capacitor used as a smoothing capacitor.

As shown in fig. 8, a plurality of 2 nd circuit components 62 are mounted on the inner peripheral region of the back surface (the surface on the ceiling 4 side) of the substrate 58. Each of the plurality of 2 nd circuit components 62 is a lead-in type conductor component, and includes, for example, an electrolytic capacitor or the like. As shown in fig. 5 and 6, the plurality of 2 nd circuit components 62 are housed inside the housing portion 26 of the 1 st case 22.

The 1 st circuit components 60 and the 2 nd circuit components 62 constitute a power supply circuit for generating electric power for lighting the 1 st light emitting unit 54 and the 2 nd light emitting unit 56. The power supply circuit converts ac power supplied from the commercial power supply via the electric wire into dc power, and supplies the dc power to the 1 st light emitting unit 54 and the 2 nd light emitting unit 56. By supplying the dc power generated by the power supply circuit to the 1 st light emitting unit 54 and the 2 nd light emitting unit 56, the 1 st light emitting unit 54 and the 2 nd light emitting unit 56 are lit. The 1 st circuit component 60 and the 2 nd circuit component 62 constitute a control circuit for controlling lighting of the 1 st light emitting unit 54 and the 2 nd light emitting unit 56.

The 1 st and 2 nd circuit components 60 and 62 may include, for example, a) a capacitive element such as an electrolytic capacitor or a ceramic capacitor, b) a resistive element such as a resistor, c) a rectifier circuit element, d) a coil element, e) a choke coil (choke transformer), f) a noise filter, g) a semiconductor element such as a diode or an integrated circuit element, and the like.

As shown in fig. 3 to 6, the circuit portion 52 further includes a circuit cover 64. The circuit cover 64 is a cover for protecting the 1 st circuit component 60, and is formed in a ring shape in an XY plane view. The circuit cover 64 covers and supports the 1 st circuit component 60 on the surface of the substrate 58. As shown in fig. 5 and 6, the inner peripheral portion of the circuit cover 64 engages with the distal end portion of the protective cover 32. The circuit cover 64 is made of metal such as aluminum, for example.

As described above, since the plurality of 1 st circuit components 60 of the surface mounting type are mounted on the surface of the substrate 58, the height of the circuit cover 64 with respect to the surface of the substrate 58 can be kept low. Thus, as shown in fig. 6, the circuit cover 64 is disposed at a position not interfering with a straight line 66 connecting the 1 st light emitting unit 54 and the radial center C of the translucent cover 20. In other words, the circuit unit 52 is arranged not to block the light from the 1 st light emitting unit 54.

The 1 st light emitting unit 54 is a light source for emitting white light, for example. As shown in fig. 7, the 1 st light emitting unit 54 includes a substrate 58 and a plurality of 1 st light emitting elements 68 (an example of a light emitting element). The 2 nd light emitting unit 56 includes a substrate 58 and a plurality of 2 nd light emitting elements 70.

The substrate 58 is a printed wiring substrate on which the 1 st light emitting element 68 and the 2 nd light emitting element 70 are mounted, and is shared with the substrate 58 of the circuit portion 52.

A plurality of 1 st light emitting elements 68 are mounted on the outer peripheral region of the surface of the substrate 58. Specifically, the 1 st light emitting elements 68 are annularly arranged at intervals in the circumferential direction of the substrate 58 so as to surround the circuit portion 52. That is, the 1 st light emitting unit 54 is disposed so as to surround the circuit unit 52.

A plurality of 2 nd light emitting elements 70 are mounted on the outer peripheral region of the surface of the substrate 58. Specifically, the plurality of 2 nd light emitting elements 70 are annularly arranged at intervals in the circumferential direction of the substrate 58 so as to surround the plurality of 1 st light emitting elements 68. That is, the 2 nd light emitting unit 56 is disposed so as to surround the 1 st light emitting unit 54.

The 1 st light Emitting element 68 and the 2 nd light Emitting element 70 are, for example, surface mount type white leds (light Emitting diodes) that are packaged. That is, the 1 st light emitting element 68 and the 2 nd light emitting element 70 each include: the package includes a white resin package (container) having a recess, an LED chip mounted on a bottom surface of the recess of the package at a time, and a sealing member sealed in the recess of the package. The LED chip is, for example, a blue LED chip that emits blue light. The sealing member contains a yellow phosphor such as YAG (yttrium aluminum garnet) that emits fluorescence using blue light from the blue LED chip as excitation light.

In this way, the 1 st light emitting element 68 and the 2 nd light emitting element 70 are B-Y type white LED elements each composed of a blue LED chip and a yellow phosphor. Specifically, the yellow phosphor contained in the sealing member absorbs part of the blue light from the blue LED chip to be excited, and emits yellow light. White light is generated by mixing the emitted yellow light with blue light that is not absorbed by the yellow phosphor. Thus, white light is emitted from the 1 st light emitting element 68 and the 2 nd light emitting element 70, respectively.

In the present embodiment, the 1 st light emitting element 68 and the 2 nd light emitting element 70 are both configured to emit white light, but may emit light of different colors (wavelengths) from each other. For example, the 1 st light emitting element 68 may emit white light, and the 2 nd light emitting element 70 may emit warm white (japanese) light.

[ 1-5. lens cover ]

Next, the lens cover 12 will be described with reference to fig. 3 to 6. The lens cover 12 is an optical member for condensing light from each of the 1 st light emitting elements 68.

As shown in fig. 3, the lens cover 12 is formed in a ring shape in the XY plane view, and is formed of a material having light transmittance (for example, a transparent acryl resin). As shown in fig. 4 to 6, the lens cover 12 is supported on the surface of the substrate 58 so as to cover the plurality of 1 st light emitting elements 68.

As shown in fig. 6, a lens portion 72 is formed in the lens cover 12. Light from each of the 1 st light emitting elements 68 is transmitted through the lens portion 72. At this time, the lens unit 72 deflects the optical axis of the light while condensing the transmitted light. Specifically, as shown in fig. 6, the optical axis of the light transmitted through the lens portion 72 is inclined in a direction close to the central axis 74 of the lighting fixture 2. The central axis 74 of the lighting fixture 2 is a straight line passing through the radial center C of the light-transmitting cover 20 and parallel to the vertical direction (Z-axis direction).

[ 1-6. decorative cover ]

Next, the trim cover 14 will be described with reference to fig. 3 to 6 and 9. Fig. 9 is an enlarged perspective view of a part of the trim cover 14 according to embodiment 1. For convenience of explanation, the lens cover 12, the light guide plate 16, the mounting member 18, and the light-transmitting cover 20 are not shown in fig. 9.

The decorative cover 14 is a cover for covering and decorating the lighting fixture 2 from the side. As shown in fig. 3, the trim cover 14 is formed in a ring shape in an XY plane view. The trim cover 14 has a side wall portion 76 and a reflection portion 78. The decorative cover 14 is formed of, for example, white polystyrene resin.

As shown in fig. 4 to 6, the side wall portion 76 is arranged to cover the lighting fixture 2 from the side, with the side portion being widened in a trumpet shape from one end portion (end portion on the ground surface side) toward the other end portion (end portion on the ceiling 4 side). The reflection portion 78 extends while being bent from one end portion of the side wall portion 76 toward the inside in the radial direction of the decorative cover 14, and is disposed so as to cover the outer peripheral surface (concave surface side) of a bent portion 86 (described later) of the light guide plate 16. The reflection portion 78 has a function of reflecting light guided to the bent portion 86 of the light guide plate 16.

As shown in fig. 9, the reflection portion 78 has a plurality of notches 80. The plurality of cutout portions 80 are arranged at intervals in the circumferential direction of the reflection portion 78. Each of the plurality of notches 80 is formed with a screw hole (not shown) through which a screw 82 (an example of a fixing member) is inserted. The trim cover 14 is supported by the 1 st supporting portion 28 of the 1 st housing 22 by screwing the screw 82 inserted into the screw hole into the 1 st supporting portion 28 of the 1 st housing 22 via the substrate 58 of the substrate unit 10.

As shown in fig. 9, the plurality of 1 st light emitting elements 68 and the plurality of 2 nd light emitting elements 70 are annularly arranged along the circumferential direction of the reflection portion 78. At least 1 of the 1 st light emitting elements 68 is disposed adjacent to the cutout portion 80, the 1 st light emitting element 68 a. The reason for such an arrangement will be described below. The light guided to the region of the bent portion 86 of the light guide plate 16 not facing the notch portion 80 travels inside the bent portion 86 while being reflected by the reflection portion 78. On the other hand, the light guided to the region of the bent portion 86 of the light guide plate 16 facing the notch portion 80 travels inside the bent portion 86 without being reflected by the reflection portion 78. Therefore, a dark portion is easily formed in the region immediately below the cutout 80 in the light-transmitting cover 20. In the present embodiment, as described above, by disposing at least 1 of the 1 st light emitting elements 68a adjacent to the cutout portion 80, the brightness of the region directly below the cutout portion 80 in the light-transmitting cover 20 can be compensated.

[ 1-7. light guide plate ]

Next, the light guide plate 16 will be described with reference to fig. 1 to 6. The light guide plate 16 is an optical member for guiding light from the plurality of 2 nd light emitting elements 70 into the room.

As shown in fig. 1 to 3, the light guide plate 16 is formed in a ring shape having a circular opening 84 (see fig. 3) in an XY plane view. As shown in fig. 4 to 6, the light guide plate 16 is attached to the 1 st support portion 28 of the 1 st housing 22 via the substrate 58 of the substrate unit 10 by screws (not shown). Thus, as shown in fig. 1, the light guide plate 16 is disposed so as to surround the light-transmissive cover 20.

As shown in fig. 4 to 6, the light guide plate 16 includes a bending portion 86, an incident portion 88, and an emitting portion 90. The light guide plate 16 is made of a material having light transmittance, for example, a transparent acryl resin.

The bent portion 86 expands in diameter while being bent in a trumpet shape from one end portion (end portion on the ceiling 4 side) toward the other end portion (end portion on the ground surface side). That is, the bent portion 86 is formed such that the opening diameter is enlarged from one end portion toward the other end portion. The curved portion 86 guides light from one end toward the other end. The outer peripheral surface (concave surface side) of the bent portion 86 is covered with the reflection portion 78 of the trim cover 14, and the inner peripheral surface (convex surface side) of the bent portion 86 is covered with the mounting member 18 (described later).

The incident portion 88 is formed in a ring shape over the entire circumference of one end portion of the bent portion 86. The incident portion 88 is disposed at a position facing and close to the plurality of 2 nd light emitting elements 70. Light from each of the plurality of 2 nd light emitting elements 70 enters the incident portion 88.

The emitting portion 90 extends from the entire circumference of the other end portion of the bent portion 86 to the outside in the radial direction of the light guide plate 16, and is formed in a ring shape in the XY plane view. The injection portion 90 extends outward in the radial direction of the light guide plate 16 from the decorative cover 14 and is disposed in a substantially horizontal posture. The ground-side surface of the emitting portion 90 is a surface from which light is emitted. The surface of the emitting portion 90 on the ceiling 4 side is formed with a prism shape by spot processing, for example.

As shown in fig. 3 and 6, an annular seal member 92 is disposed between the exit portion 90 and the reflection portion 78 of the trim cover 14. The seal member 92 seals a gap between the injection portion 90 and the reflection portion 78 of the trim cover 14. This can prevent insects, dust, and the like from entering the lighting apparatus 2 through the gap.

[ 1-8 mounting Components ]

Next, the mounting member 18 will be described with reference to fig. 3 to 6 and 10. Fig. 10 is an enlarged perspective view of the engagement mechanism 110 according to embodiment 1. For convenience of explanation, the light guide plate 16 and the like are not shown in fig. 10.

The mounting member 18 is a member for detachably mounting the light-transmitting cover 20. As shown in fig. 3, the mounting member 18 is formed in a ring shape in an XY plane view. As shown in fig. 4 to 6, the mounting member 18 is expanded in a trumpet shape from one end (end on the ceiling 4 side) to the other end (end on the ground surface side), and is mounted to the 1 st support portion 28 of the 1 st housing 22 by screws (not shown) via the substrate 58 of the substrate unit 10. Thus, the mounting member 18 is disposed so as to cover the inner peripheral surface of the bent portion 86 of the light guide plate 16. The mounting member 18 is made of a material having light transmittance, for example, a transparent acrylic resin. The entire surface of the mounting member 18 is embossed, for example. This can diffuse light transmitted through the mounting member 18. The mounting member 18 is made of a material having translucency, but it also includes a case where a plurality of regions having different transmittances are mixed in the mounting member 18 by forming a part of the mounting member 18 in a milky color, for example.

As shown in fig. 6 and 10, a flange portion 94 extending radially outward of the mounting member 18 is formed at the other end portion (outer circumferential portion) of the mounting member 18. The flange portion 94 is formed in a ring shape over the entire circumference of the other end portion of the mounting member 18, and is disposed so as to cover a part of the emission portion 90 of the light guide plate 16 in the XY plane view. As shown in fig. 3 and 6, an annular seal member 96 is attached to an outer peripheral portion of the flange portion 94. The sealing member 96 has a substantially U-shaped cross-sectional shape, and is formed of a material having translucency, for example, transparent silicon. The sealing member 96 seals a gap between the flange 94 of the mounting member 18 and the emission portion 90 of the light guide plate 16, and also seals a gap between the flange 94 of the mounting member 18 and the light-transmitting cover 20. This can prevent insects, dust, and the like from entering the lighting apparatus 2 through the gap. Since the sealing member 96 is made of a material having translucency, light emitted from the emission portion 90 of the light guide plate 16 passes through the sealing member 96 and is irradiated into the room. This can reduce light loss.

As shown in fig. 6 and 10, a mounting portion 98 is further formed at the other end (outer peripheral portion) of the mounting member 18. The mounting portion 98 is formed in a ring shape over the entire circumference of the other end portion of the mounting member 18, and projects from the flange portion 94 toward the ground surface. As shown in fig. 6, the mounting portion 98 has a tapered surface 100 (surface C) having a diameter expanding in a direction from the 1 st light emitting portion 54 toward the mounting portion 98. If the tapered surface 100 is not formed in the mounting portion 98, light from the 1 st light emitting portion 54 is scattered at the right-angled corner portion of the mounting portion 98, and bright lines are generated in the translucent cover 20. In the present embodiment, the tapered surface 100 is formed in the mounting portion 98, so that the scattering of light can be suppressed, and the occurrence of bright lines in the translucent cover 20 can be suppressed.

As shown in fig. 10, a plurality of (e.g., three) sets of the 1 st groove portion 102 and the 2 nd groove portion 104 are formed on the outer peripheral surface of the mounting portion 98. The 1 st groove portion 102 and the 2 nd groove portion 104 are arranged at intervals in the circumferential direction of the mounting portion 98.

The 1 st groove portion 102 extends in an elongated shape along the circumferential direction of the mounting portion 98. One end 102a of the 1 st groove 102 in the longitudinal direction is open. A 1 st projection 106 is formed at one end 102a of the 1 st groove 102 in the longitudinal direction, and a 2 nd projection 108 is formed at the other end 102b of the 1 st groove 102 in the longitudinal direction. The 2 nd groove portion 104 extends in an elongated shape along the circumferential direction of the mounting portion 98 from the other end portion 102b in the longitudinal direction of the 1 st groove portion 102. The width (the size in the short-side direction) of the 2 nd groove portion 104 is narrower than the width of the 1 st groove portion 102.

The attachment portion 98, the 1 st groove portion 102, and the 2 nd groove portion 104 constitute an engagement mechanism 110. By this engaging mechanism 110, when the translucent cover 20 is rotated with respect to the mounting member 18, the translucent cover 20 can be engaged with the mounting member 18. The operation of engaging the translucent cover 20 with the mounting member 18 will be described later.

[ 1-9. light-transmitting shade ]

Next, the light-transmitting cover 20 will be described with reference to fig. 1, 3 to 6, and 10. The light-transmitting cover 20 is a diffusion cover for diffusing (transmitting) light from the 1 st light-emitting part 54. The light-transmitting cover 20 is made of a light-transmitting material, for example, milk white acrylic resin.

As shown in fig. 1 and 3, the translucent cover 20 is formed in a circular shape in the XY plane view. As shown in fig. 4 to 6, the light-transmitting cover 20 is detachably attached to the mounting member 18 and is disposed so as to cover the opening 84 (see fig. 4) of the light guide plate 16. That is, the light-transmitting cover 20 is disposed so as to face the 1 st light-emitting unit 54. The light guide plate 16 is disposed so as to surround the light-transmissive cover 20.

As shown in fig. 6 and 10, a plurality of (e.g., 3) engaging portions 112 are formed in the opening of the light-transmissive cover 20. The plurality of engaging portions 112 are arranged at intervals along the circumferential direction of the light-transmitting cover 20, corresponding to the plurality of sets of the 1 st groove portion 102 and the 2 nd groove portion 104 formed in the mounting member 18. Each of the plurality of engaging portions 112 protrudes radially inward of the light-transmissive cover 20 (i.e., toward the mounting portion 98 of the mounting member 18), and extends in an elongated shape in the circumferential direction of the light-transmissive cover 20. The width (dimension in the short-side direction) of the engaging portion 112 is smaller than the width of the 1 st groove portion 102 and substantially the same as the width of the 2 nd groove portion 104. The plurality of engaging portions 112 constitute the engaging mechanism 110.

The operation of engaging the light-transmitting cover 20 with the mounting member 18 will be described below with reference to fig. 6 and 10. The user brings the translucent cover 20 close to the mounting member 18, aligns the engaging portion 112 with the 1 st groove portion 102, and then rotates the translucent cover 20 relative to the mounting member 18 in the direction indicated by the arrow 114 in fig. 10. Further, marks may be provided to the light-transmitting cover 20 and the mounting member 18, respectively, so that the engagement portion 112 and the 1 st groove portion 102 can be easily aligned.

Thus, the engaging portion 112 is inserted into the one end 102a in the longitudinal direction of the 1 st groove 102, and moves from the one end 102a to the other end 102b in the longitudinal direction of the 1 st groove 102. At this time, the engaging portion 112 passes through the one end portion 102a in the longitudinal direction of the 1 st groove portion 102 while riding on the 1 st projection 106, and then passes through the other end portion 102b in the longitudinal direction of the 1 st groove portion 102 while riding on the 2 nd projection 108. Thus, the user can obtain a click feeling when rotating the translucent cover 20 with respect to the mounting member 18.

When the user further rotates the translucent cover 20 in the above-described direction with respect to the mounting member 18, the engaging portion 112 moves from the other end portion 102b in the longitudinal direction of the 1 st groove portion 102 to the 2 nd groove portion 104, and engages with the 2 nd groove portion 104. Thereby, the translucent cover 20 is attached to the mounting member 18, and the translucent cover 20 and the mounting member 18 are engaged with each other. At this time, as shown in fig. 6, the opening of the light-transmitting cover 20 is disposed to face the flange portion 94 of the mounting member 18, and does not contact the emission portion 90 of the light guide plate 16. As a result, when the light-transmitting cover 20 is rotated with respect to the mounting member 18, the occurrence of scratches due to friction on the surface of the emission portion 90 of the light guide plate 16 can be suppressed.

On the other hand, when detaching the light-transmissive cover 20 from the mounting member 18, the user rotates the light-transmissive cover 20 with respect to the mounting member 18 in the direction indicated by the arrow 116 in fig. 10. Thus, the engaging portion 112 moves from the 2 nd groove portion 104 to the 1 st groove portion 102 while riding on the 2 nd protrusion 108. At this time, even if the user mistakenly takes the hand off the translucent cover 20, the engaging portion 112 is caught by the 1 st groove portion 102, so that the translucent cover 20 can be prevented from falling off the mounting member 18. When the user further rotates the translucent cover 20 in the above-described direction with respect to the mounting member 18, the engaging portion 112 is disengaged from the 1 st groove portion 102 while riding on the 1 st projection 106. Thereby, the light-transmitting cover 20 is detached from the mounting member 18.

[ 1-10. illumination method ]

Next, a method of lighting the lighting fixture 2 will be described with reference to fig. 6.

By supplying the dc power from the circuit unit 52 to the 1 st light emitting unit 54 and the 2 nd light emitting unit 56, the 1 st light emitting element 68 and the 2 nd light emitting element 70 emit light, respectively.

As shown in fig. 6, the light from each of the 1 st light emitting elements 68 is condensed by the lens portion 72 of the lens cover 12 and then enters the light-transmitting cover 20. The light from the light-transmitting cover 20 is diffused and irradiated into the room. Further, part of the light from each of the 1 st light emitting elements 68 is totally reflected by the mounting member 18 and then enters the light-transmissive cover 20. This can improve the light extraction efficiency.

Further, the light from each of the plurality of 2 nd light emitting elements 70 is guided to the curved portion 86 after being incident on the incident portion 88 of the light guide plate 16. The light guided to the curved portion 86 is guided toward the emitting portion 90 while being reflected by the reflecting portion 78 of the trim cover 14. The light guided to the emitting portion 90 is reflected by the prism shape formed on the surface of the emitting portion 90 on the ceiling 4 side, and is emitted from the surface of the emitting portion 90 on the ground surface side. The light from the emitting unit 90 is diffused and irradiated into the room. Further, a part of the light guided to the bent portion 86 is incident from the bent portion 86 to the mounting member 18 as leakage light. The light incident on the mounting member 18 is transmitted through the mounting member 18 and is incident on the translucent cover 20. This can reduce unevenness in light on the translucent cover 20.

[ 1-11. Effect ]

The lighting apparatus 2 of the present embodiment includes: the 1 st light emitting part 54; a 2 nd light emitting unit 56 disposed so as to surround the 1 st light emitting unit 54; a light-transmitting cover 20 that is disposed so as to face the 1 st light-emitting unit 54 and transmits light from the 1 st light-emitting unit 54; a light guide plate 16 disposed so as to surround the light-transmitting cover 20, into which light from the 2 nd light-emitting unit 56 is incident, and which emits the incident light to the outside; and a mounting member 18 which is mounted with the light-transmitting cover 20, is disposed so as to cover a part of the light guide plate 16, and is formed of a material having light-transmitting properties.

Thus, since the mounting member 18 is disposed so as to cover a part of the light guide plate 16 and is formed of a material having light transmittance, a part of the light incident on the light guide plate 16 is incident on the mounting member 18 from the light guide plate 16 as leakage light. The light incident on the mounting member 18 is transmitted through the mounting member 18 and is incident on the translucent cover 20. This can reduce unevenness in light in the light-transmitting cover 20.

Further, the light guide plate 16 includes: a curved portion 86 which expands in a horn shape from one end portion toward the other end portion and guides light from the one end portion toward the other end portion; an incident portion 88 formed at one end of the curved portion 86, into which light from the 2 nd light emitting portion 56 is incident; and an emitting portion 90 that extends radially outward from the other end portion of the bent portion 86, is formed in a ring shape in a plan view, and emits light from the bent portion 86. The mounting member 18 is disposed so as to cover the inner peripheral surface of the bent portion 86.

Accordingly, since the light guide plate 16 has the bent portion 86, the size of the light guide plate 16 in the radial direction can be suppressed to be small.

Further, the lighting fixture 2 includes: a 1 st case 22 for supporting a 1 st light emitting unit 54 and a 2 nd light emitting unit 56; an annular decorative cover 14 having a notch portion 80 and disposed so as to cover the outer peripheral surface of the bent portion 86; and a screw 82 disposed in the cutout portion 80 to fix the decorative cover 14 to the 1 st case 22. The 1 st light emitting unit 54 includes a plurality of 1 st light emitting elements 68 arranged in a ring shape along the circumferential direction of the trim cover 14. The 1 st light emitting element 68a, which is a part of the 1 st light emitting elements 68, is disposed adjacent to the notch 80.

Thus, by disposing the 1 st light emitting element 68a adjacent to the cutout portion 80, the brightness of the region directly below the cutout portion 80 in the light-transmitting cover 20 can be compensated.

The lighting fixture 2 further includes a 2 nd housing 24 supporting the 1 st housing 22 and disposed so that a part of the 1 st housing 22 is exposed to the outside.

This enables heat from 1 st light emitting unit 54 and 2 nd light emitting unit 56 to be efficiently dissipated from 1 st case 22.

Further, the lighting fixture 2 includes an engagement mechanism 110 for engaging the light-transmissive cover 20 with the mounting member 18 by rotating the light-transmissive cover 20 with respect to the mounting member 18.

This enables the light-transmitting cover 20 to be reliably attached to the mounting member 18.

Further, the engagement mechanism 110 includes: an annular mounting portion 98 formed on the mounting member 18; a 1 st groove portion 102 formed in the mounting portion 98, extending along the circumferential direction of the mounting portion 98, and having one end 102a in the longitudinal direction open; a 2 nd groove portion 104 formed in the mounting portion 98, extending from the other end portion 102b in the longitudinal direction of the 1 st groove portion 102 in the circumferential direction, and having a width smaller than that of the 1 st groove portion 102; and an engaging portion 112 formed on the light-transmitting cover 20 and protruding toward the mounting portion 98. When the light-transmitting cover 20 is rotated relative to the mounting member 18, the engaging portion 112 moves from the one end 102a to the other end 102b of the 1 st groove 102, and then engages with the 2 nd groove 104.

This enables the light-transmitting cover 20 to be reliably and easily attached to the mounting member 18.

Further, the mounting portion 98 has a tapered surface 100 whose diameter is enlarged in a direction from the 1 st light emitting portion 54 toward the mounting portion 98.

This can suppress the occurrence of bright lines in the translucent cover 20.

The lighting apparatus 2 further includes an annular sealing member 96 attached to an outer peripheral portion of the attachment member 18 and formed of a translucent material. The sealing member 96 seals between the light guide plate 16 and the mounting member 18, and seals between the mounting member 18 and the light-transmissive cover 20.

This can prevent insects, dust, and the like from entering the lighting apparatus 2. Since the sealing member 96 is made of a material having translucency, light emitted from the light guide plate 16 passes through the sealing member 96 and is irradiated into the room. This can reduce light loss.

Further, the lighting fixture 2 includes a circuit unit 52 electrically connected to the 1 st light emitting unit 54 and the 2 nd light emitting unit 56. The 1 st light emitting unit 54 is disposed so as to surround the circuit unit 52. The circuit unit 52 is disposed so as to block light from the 1 st light emitting unit 54.

This can reduce so-called dark spots of light that darken in the central portion of the translucent cover 20.

(embodiment mode 2)

[ 2-1. Structure of Lighting apparatus ]

Next, the configuration of the lighting fixture 2A according to embodiment 2 will be described with reference to fig. 11. Fig. 11 is an enlarged cross-sectional view of a part of a lighting fixture 2A according to embodiment 2. In the present embodiment, the same components as those in embodiment 1 are assigned the same reference numerals, and description thereof is omitted.

As shown in fig. 11, the lighting fixture 2A according to embodiment 2 includes a sensor 120 in addition to the constituent elements described in embodiment 1. The sensor 120 is, for example, a) a human detection sensor that detects the presence of a person in a room, b) a brightness sensor that detects brightness in a room, c) an image sensor having a camera function for capturing an image of the surroundings of the lighting fixture 2A, or the like.

The sensor 120 is disposed inside the casing 118 formed in a ring shape in the XY plane view. The housing 118 is disposed adjacent to the flange portion 94 of the mounting member 18. That is, the sensor 120 is disposed adjacent to the other end (outer peripheral portion) of the mounting member 18. The sensor 120 is electrically connected to the circuit portion 52 of the substrate unit 10 via the flexible substrate 122. The flexible substrate 122 is disposed between the mounting member 18 and the bent portion 86 of the light guide plate 16, and is bent along the bent portion 86 of the light guide plate 16. Further, marks may be provided on the light-transmitting cover 20 and the housing 118, respectively, so that the engagement portion 112 and the 1 st groove portion 102 (see fig. 10) can be easily aligned. Alternatively, the sensor 120 may be used as a marker.

In the case where the sensor 120 is an image sensor, the image sensor is, for example, a cmos (complementary Metal Oxide semiconductor) image sensor. In this case, an infrared LED (not shown) is disposed on the housing 118, whereby night vision can be performed indoors.

In addition, in the case where the sensor 120 includes an image sensor and a human detection sensor, when a human is detected indoors by the human detection sensor, an image captured by the image sensor may be stored in a memory or the like as a countermeasure against a crime.

In the case where the sensor 120 is an image sensor, an image captured by the image sensor may be transmitted to a terminal device such as a smart phone or a personal computer as a crime prevention measure by using a wireless device incorporated in the display device 2A.

The flexible substrate 122 is generally used for image transfer, but for example, a lead wire or the like may be used instead of the flexible substrate 122.

[ 2-2. Effect ]

The lighting apparatus 2A of the present embodiment further includes: a sensor 120 disposed adjacent to an outer peripheral portion of the mounting member 18; and a flexible substrate 122 electrically connected to the sensor 120 and disposed between the mounting member 18 and the light guide plate 16.

This can suppress the sensor 120 from being affected by light from the lighting fixture 2.

(modification example etc.)

The present invention has been described above based on embodiments 1 and 2, but the present invention is not limited to the above embodiments.

In each of the above embodiments, the mounting structures of the 1 st light emitting element 68 and the 2 nd light emitting element 70 are SMD structures, but the SMD structures are not limited to this, and may be, for example, cob (chip onboard) structures in which LED chips are directly mounted on the substrate 58. In this case, the plurality of LED chips mounted on the substrate 58 may be sealed together by the sealing member or may be sealed separately. The sealing member may contain a wavelength conversion material such as the yellow phosphor.

In each of the above embodiments, the 1 st light-emitting element 68 and the 2 nd light-emitting element 70 are exemplified by LEDs, but the present invention is not limited thereto, and for example, semiconductor light-emitting elements such as semiconductor lasers, and other solid-state light-emitting elements such as organic EL (electroluminescence) and inorganic EL may be used.

The lighting apparatus 2(2A) may further include an ion generating unit for generating negative ions, for example. The ion generating unit is disposed inside the device main body 6, for example. The ion generating unit includes a needle-shaped discharge electrode, a high voltage generating circuit for applying a high voltage (for example, about 6000V) to the needle-shaped discharge electrode, and a peltier element for cooling the needle-shaped discharge electrode. The needle-shaped discharge electrode is cooled by the peltier effect of the peltier element and dew is condensed. By applying a high voltage to moisture in the air condensed on the needle-shaped discharge electrodes by a high voltage generating circuit, negative ions (so-called nano water ions (registered trademark)) encapsulated in nano-sized (e.g., about 5 to 20nm in diameter) fine particulate water are generated. The negative ions generated by the ion generator are blown out of the appliance body 6 by a blower fan or the like disposed inside the appliance body 6, and are diffused into the room.

Further, the nano water ions can exist in the air for a long time (about 6 times the life of the negative ions) as compared with the case where the nano water ions exist alone, and are extremely small in size, so that the nano water ions can be dispersed throughout the entire indoor space and suspended for a long time. It is known that nano water ions have high reactivity and have the ability to act on odorous components and decompose into odorless components. Therefore, the nano water ions diffuse into the room, and thereby a) an effect of deodorizing a curtain, suspended dust, or the like in the room, b) an effect of inactivating allergens, viruses, or the like suspended or attached to the room, c) an effect of sterilizing mold, bacteria, or the like suspended or attached to the room, or the like can be obtained.

The lighting apparatus 2(2A) may further include a speaker for outputting sound received by the lighting apparatus 2(2A) by wire or wirelessly. In this case, for example, the speaker may be controlled so that the sound is output from the speaker in synchronization with the lighting of the 1 st light emitting unit 54 and the 2 nd light emitting unit 56.

In addition, the present invention includes a form obtained by applying various modifications to the above-described embodiments, and a form realized by arbitrarily combining the components and functions of the embodiments without departing from the scope of the present invention.

Claims (10)

1. A lighting fixture is characterized by comprising:

1 st light emitting part;

a 2 nd light emitting unit disposed so as to surround the 1 st light emitting unit;

a light-transmitting cover which is disposed so as to face the 1 st light-emitting part and transmits light from the 1 st light-emitting part;

a light guide plate disposed so as to surround the light-transmitting cover, into which light from the 2 nd light-emitting unit is incident, and which emits the incident light to the outside; and

and a mounting member mounted on the light-transmissive cover, disposed to cover a part of the light guide plate in a plan view, and formed of a material having light-transmitting properties.

2. The lighting apparatus of claim 1,

the light guide plate comprises:

a curved portion formed to have an opening diameter that increases from one end portion toward the other end portion, and guiding light from the one end portion toward the other end portion;

an incident portion formed at the one end portion of the curved portion, on which light from the 2 nd light emitting portion is incident; and

an emitting portion that extends radially outward from the other end portion of the curved portion, is formed in a ring shape in a plan view, and emits light from the curved portion;

the mounting member is disposed so as to cover an inner peripheral surface of the bent portion.

3. The lighting apparatus of claim 2,

the lighting fixture further includes:

a 1 st housing for supporting the 1 st light emitting unit and the 2 nd light emitting unit;

an annular reflecting member having a notch portion and disposed so as to cover an outer peripheral surface of the curved portion; and

a fixing member disposed at the notch portion to fix the reflecting member to the 1 st case;

the 1 st light emitting unit includes a plurality of light emitting elements arranged in a ring shape along a circumferential direction of the reflecting member;

a part of the plurality of light emitting elements is disposed adjacent to the notch portion.

4. The lighting apparatus of claim 3,

the lighting apparatus further includes a 2 nd housing, and the 2 nd housing supports the 1 st housing and is disposed so that a part of the 1 st housing is exposed to the outside.

5. The lighting apparatus of claim 1,

the lighting device further includes an engaging mechanism for engaging the translucent cover with the mounting member by rotating the translucent cover with respect to the mounting member.

6. The lighting apparatus of claim 5,

the engaging mechanism includes:

an annular mounting portion formed on the mounting member;

a 1 st groove portion formed in the mounting portion, extending in a circumferential direction of the mounting portion, and having an opening at one end in a longitudinal direction;

a 2 nd groove portion formed in the mounting portion, extending from the other end portion in the longitudinal direction of the 1 st groove portion in the circumferential direction, and having a width smaller than that of the 1 st groove portion; and

an engaging portion formed on the light-transmitting cover and protruding toward the mounting portion;

when the light-transmitting cover is rotated relative to the mounting member, the engaging portion is engaged with the 2 nd groove portion after moving from the one end portion to the other end portion of the 1 st groove portion.

7. The lighting apparatus of claim 6,

the mounting portion has a tapered surface whose diameter increases in a direction from the 1 st light emitting portion toward the mounting portion.

8. The lighting apparatus of claim 1,

the lighting device further includes an annular sealing member which is attached to an outer peripheral portion of the attachment member and is formed of a translucent material;

the sealing member seals a space between the light guide plate and the mounting member, and seals a space between the mounting member and the light-transmitting cover.

9. The lighting apparatus of claim 1,

the lighting device further includes a circuit unit electrically connected to the 1 st light emitting unit and the 2 nd light emitting unit;

the 1 st light emitting unit is disposed so as to surround the circuit unit;

the circuit unit is disposed so as not to block light from the 1 st light emitting unit.

10. The lighting device according to any one of claims 1 to 9,

the lighting fixture further includes:

a sensor disposed adjacent to an outer peripheral portion of the mounting member; and

and a flexible substrate electrically connected to the sensor and disposed between the mounting member and the light guide plate.