JP2017224501A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture capable of suppressing occurrence of shadow on a diffusion cover.SOLUTION: A lighting fixture 2 includes: a plurality of substrates 42 arranged in a ring shape; a plurality of first light-emitting elements 44 each mounted on the plurality of substrates 42; a pair of connectors 50 each mounted at least on the outer peripheral part of each of the pair of substrates 42 adjacent to each other; a lead line 52 electrically connecting the pair of connectors 50; a light-shielding reflection member 24 formed into a ring shape and covering the outer periphery of each of the plurality of substrates 42; and a diffusion cover 26 for diffusing light from the plurality of first light-emitting elements 44.SELECTED DRAWING: Figure 11

Description

  The present invention relates to a lighting fixture for illuminating a space.

  A ceiling light is known as one of lighting fixtures for illuminating a space (see, for example, Patent Document 1). The ceiling light is mounted on the fixture body so as to cover the fixture body, the light emitting module supported by the fixture body, the power supply unit supported by the fixture body and supplying power to the light emitting module, and the light emitting module. And a diffusion cover. The light emitting module includes a substrate and a plurality of LEDs (Light Emitting Diodes) mounted on the substrate.

JP 2011-192475 A

  In the conventional ceiling light described above, for example, a connector for electrically connecting lead wires from the power supply unit is mounted on the substrate. Since the connector is a non-light-emitting region on the substrate, the shadow of the connector is generated on the diffusion cover, causing a problem that a good illumination state cannot be obtained.

  This invention is made | formed in view of such a subject, and it aims at providing the lighting fixture which can suppress that a shadow arises in a diffusion cover.

  In order to solve the above problems, a lighting fixture according to one embodiment of the present invention is a lighting fixture for illuminating a space, and is mounted on a plurality of substrates arranged in a ring shape and the plurality of substrates, respectively. A plurality of light emitting elements, at least a pair of connecting members mounted on the outer periphery of each of the pair of adjacent substrates, wirings for electrically connecting the pair of connecting members, and a ring shape A cover member that covers the outer periphery of each of the plurality of substrates and has a light shielding property; and a diffusion cover for diffusing light from the plurality of light emitting elements.

  According to the lighting fixture which concerns on 1 aspect of this invention, it can suppress that a shadow arises in a spreading | diffusion cover.

It is a perspective view which shows the external appearance by the side of the floor surface of the lighting fixture which concerns on embodiment. It is a perspective view which shows the external appearance of the ceiling side of the lighting fixture which concerns on embodiment. It is a disassembled perspective view which shows the lighting fixture which concerns on embodiment in the state which removed the diffusion cover. It is a disassembled perspective view which shows the lighting fixture which concerns on embodiment in the state which removed the decorative cover, the light-guide plate, and the reflection member. It is a disassembled perspective view which decomposes | disassembles and shows the lighting fixture which concerns on embodiment. It is the VI-VI sectional view taken on the line of FIG. It is sectional drawing which expands and shows a part of FIG. It is a top view which shows the lighting fixture which concerns on embodiment in the state which abbreviate | omitted the decorative cover, the light-guide plate, the reflection member, and the diffusion cover. It is a top view which shows the lighting fixture which concerns on embodiment in the state which further omitted the lens cover from FIG. It is a top view which shows the lighting fixture which concerns on embodiment in the state which abbreviate | omitted the diffusion cover. It is the XI-XI sectional view perspective view of FIG.

  Embodiments of the present invention will be described below. Note that each of the embodiments described below shows a preferred specific example of the present invention. Therefore, numerical values, shapes, materials, components, arrangement positions and connection forms of the components, and the like shown in the following embodiments are merely examples, and are not intended to limit the present invention. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims showing the highest concept of the present invention are described as optional constituent elements.

  Each figure is a mimetic diagram and is not necessarily illustrated strictly. In each figure, substantially the same configuration is denoted by the same reference numeral, and redundant description is omitted or simplified.

(Embodiment)
Hereinafter, the lighting fixture which concerns on embodiment is demonstrated.

[1. Configuration of lighting equipment]
[1-1. Overall configuration of lighting equipment]
First, the whole structure of the lighting fixture 2 which concerns on embodiment is demonstrated, referring FIGS. FIG. 1 is a perspective view showing an external appearance of a floor surface side of a lighting fixture 2 according to an embodiment. FIG. 2 is a perspective view showing an external appearance of the lighting fixture 2 according to the embodiment on the ceiling 4 side. FIG. 3 is an exploded perspective view showing the luminaire 2 according to the embodiment with the diffusion cover 26 removed. FIG. 4 is an exploded perspective view showing the lighting fixture 2 according to the embodiment with the decorative cover 20, the light guide plate 22, and the reflection member 24 removed. FIG. 5 is an exploded perspective view showing the lighting fixture 2 according to the embodiment in an exploded manner.

  The lighting fixture 2 is a ceiling light that is installed on a ceiling 4 (see FIG. 5) of a building such as a house and illuminates a space 6 (see FIG. 6 described later) inside the building. As shown in FIGS. 1 to 5, the lighting fixture 2 includes a fixture body 8, a fixture mounting member 10, a power supply unit 12, a reflective cover 14 (an example of a support member), a light emitting module 16, a lens cover 18, a decorative cover 20, A light guide plate 22, a reflection member 24 (an example of a cover member), and a diffusion cover 26 are provided.

  Hereinafter, each component of the lighting fixture 2 is demonstrated in detail, referring FIGS. 1 to 9, the minus side of the Z-axis represents the ceiling 4 side, and the plus side of the Z-axis represents the floor (not shown) side. For convenience of explanation, in FIG. 1 and FIGS. 3 to 7, the lighting fixture 2 is illustrated in an upside down posture from the posture during normal use.

[1-2. Instrument body]
The instrument body 8 will be described with reference to FIGS. 2, 5, and 6. 6 is a sectional view taken along line VI-VI in FIG. FIG. 7 is an enlarged cross-sectional view showing a part of FIG.

  The instrument main body 8 is a housing for supporting the power supply unit 12 and the reflective cover 14. As shown in FIGS. 2, 5, and 6, the instrument body 8 is formed in a ring shape having a circular opening 8a at the center. A flange portion 8 b for supporting the reflective cover 14 is formed on the outer peripheral portion of the instrument body 8. In addition, the instrument main body 8 is shape | molded in the shape mentioned above by pressing a sheet metal, such as an aluminum plate or a steel plate, for example.

  As shown in FIG. 6, a holder 28 for attaching the instrument body 8 to the instrument mounting member 10 (described later) is fixed to the peripheral edge of the opening 8 a of the instrument body 8. The holder 28 extends from the peripheral edge of the opening 8a of the instrument body 8 to the floor surface side. As will be described later, the instrument mounting member 10 is detachably fitted inside the holder 28.

  Further, as shown in FIGS. 5 and 6, an insulating case 30 for supporting the reflective cover 14 is fixed to one surface (floor surface) of the instrument body 8. The insulating case 30 is formed in a substantially rectangular cylindrical shape, and is disposed at a position surrounding the holder 28. The insulating case 30 is made of an insulating material such as resin.

  Further, as shown in FIGS. 2 and 6, a plurality of cushion members 32 made of urethane or the like are attached to the other side surface (the surface on the ceiling 4 side) of the instrument body 8. The plurality of cushion members 32 are arranged at equal intervals along the circumferential direction of the instrument body 8. When the lighting fixture 2 is installed on the ceiling 4 as will be described later, the plurality of cushion members 32 are sandwiched between the fixture main body 8 and the ceiling 4, thereby suppressing the wobbling of the fixture main body 8.

[1-3. Instrument mounting member]
Next, the instrument mounting member 10 will be described with reference to FIGS. 3, 5, and 6. The instrument attachment member 10 is an adapter for detachably attaching the instrument body 8 to a hooking sealing body 34 (see FIG. 5) installed on the ceiling 4.

  As shown in FIGS. 3, 5, and 6, the instrument mounting member 10 is formed in a substantially columnar shape, and is detachably fitted into the holder 28 of the instrument body 8. Moreover, the instrument mounting member 10 is detachably attached to the hooking sealing body 34.

  When installing the lighting fixture 2 on the ceiling 4, the user first hooks the fixture mounting member 10 and attaches it to the ceiling body 34. Thereafter, the user pushes the instrument body 8 toward the ceiling 4 so that the instrument mounting member 10 is inserted into the holder 28 of the instrument body 8, thereby fitting the holder 28 and the instrument mounting member 10 together. . Thereby, the fixture body 8 is attached to the ceiling 4 via the fixture attachment member 10 and the hooking sealing body 34, and the lighting fixture 2 is installed on the ceiling 4.

  The hook ceiling body 34 is electrically connected to a commercial power source (not shown) disposed on the back side of the ceiling 4 via an electric wire (not shown). By installing the luminaire 2 on the ceiling 4, AC power from a commercial power supply is supplied to the luminaire 2 via the electric wire and the hooking sealing body 34.

[1-4. Power supply unit]
Next, the power supply unit 12 will be described with reference to FIG. The power supply unit 12 is a unit for generating electric power for causing the light emitting module 16 to emit light. As shown in FIG. 5, the power supply unit 12 includes a substrate 36 and a plurality of circuit components 38 mounted on the substrate 36.

  The board 36 is a printed wiring board for mounting a plurality of circuit components 38, and is formed in a substantially L shape. The substrate 36 is attached to one surface of the instrument body 8 so that the plurality of circuit components 38 face the floor surface.

  Each of the plurality of circuit components 38 is a power supply circuit component constituting a power supply circuit for generating electric power for causing the light emitting module 16 to emit light. The plurality of circuit components 38 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) Noise filter, g) Semiconductor elements such as diodes or integrated circuit elements.

  The plurality of circuit components 38 convert AC power supplied from the commercial power supply described above via electric wires into DC power. When the DC power generated by the plurality of circuit components 38 is supplied to the light emitting module 16, the light emitting module 16 emits light.

  The plurality of circuit components 38 may include not only the above-described power supply circuit components but also circuit components constituting other circuits. For example, the plurality of circuit components 38 may include a driving circuit component that configures a dimming circuit, a booster circuit, or the like, or includes a communication circuit component (communication module) that configures a communication circuit. Also good.

[1-5. Reflective cover]
Next, the reflective cover 14 will be described with reference to FIGS. The reflective cover 14 is a cover that supports the light emitting module 16 and reflects light from the light emitting module 16. The reflective cover 14 also functions as a heat sink for dissipating heat from the light emitting module 16.

  As shown in FIGS. 4 to 6, the reflection cover 14 is formed in a ring shape having a substantially rectangular opening 14 a at the center. A flange portion 14 b is formed on the outer peripheral portion of the reflection cover 14. The reflection cover 14 is formed into the above-described shape by pressing a sheet metal such as an aluminum plate or a steel plate. Note that a white paint is applied or a reflective metal material is deposited on one surface (floor surface) of the reflective cover 14 in order to improve reflectivity and improve light extraction efficiency. .

  As shown in FIG. 6, the reflection cover 14 is disposed so as to cover one surface of the instrument body 8. The flange portion 14 b of the reflective cover 14 is attached to the flange portion 8 b of the instrument body 8 with a plurality of screws 40. Further, the peripheral edge of the opening 14 a of the reflective cover 14 is supported by the tip of the insulating case 30.

[1-6. Light emitting module]
Next, the light emitting module 16 will be described with reference to FIGS. FIG. 8 is a plan view showing the luminaire 2 according to the embodiment in a state in which the decorative cover 20, the light guide plate 22, the reflection member 24, and the diffusion cover 26 are omitted. FIG. 9 is a plan view showing the luminaire 2 according to the embodiment in a state in which the lens cover 18 is further omitted from FIG.

  The light emitting module 16 is a light source for emitting white light, for example. As shown in FIGS. 4 to 9, the light emitting module 16 includes a plurality of substrates 42, a plurality of first light emitting elements 44 and a plurality of second light emitting elements 46 (light emitting elements) mounted on each of the plurality of substrates 42. An example of an element).

  As shown in FIG. 9, the substrate 42 is a printed wiring board for mounting the plurality of first light emitting elements 44 and the plurality of second light emitting elements 46, and is formed in an arc shape. Each of the plurality of substrates 42 is attached to one surface of the reflective cover 14 with a screw 48 so as to surround the opening 14 a of the reflective cover 14. Thereby, the some board | substrate 42 is arrange | positioned along with the ring shape along the circumferential direction of the light-guide plate 22 (after-mentioned).

  As shown in FIG. 9, a pair of connectors 50 (an example of a connection member) is mounted on each of the outer peripheral portion of the substrate 42 and both end portions in the circumferential direction of the substrate 42. A pair of opposing connectors 50 of a pair of adjacent substrates 42 are electrically connected to each other via lead wires 52 (an example of wiring). The lead wire 52 is disposed so as to straddle between the outer peripheral portions of the pair of adjacent substrates 42. Further, a pair of opposing connectors 50 of another pair of adjacent substrates 42 are electrically connected to the substrate 36 of the power supply unit 12 via a pair of lead wires 54, respectively. The pair of lead wires 54 extend from the power supply unit 12 through the reflective cover 14.

  As the substrate 42, for example, a resin substrate, a metal base substrate, a ceramic substrate, a glass substrate, or the like can be used. Further, the substrate 42 is not limited to a rigid substrate, and may be a flexible substrate.

  The plurality of first light emitting elements 44 are mounted on the inner peripheral portion of the substrate 42. Specifically, the plurality of first light emitting elements 44 are arranged, for example, in three rows in the radial direction of the substrate 42 in the inner peripheral portion of the substrate 42. In each row, the plurality of first light emitting elements 44 are arranged at intervals in the circumferential direction of the substrate 42. Thereby, as the whole light emitting module 16, the plurality of first light emitting elements 44 are arranged in a ring shape.

  The plurality of second light emitting elements 46 are mounted on the outer peripheral portion of the substrate 42. Specifically, the plurality of second light emitting elements 46 are arranged, for example, in one row at intervals in the circumferential direction of the substrate 42 at the outer peripheral portion of the substrate 42. Thereby, as the whole light emitting module 16, the plurality of second light emitting elements 46 are arranged in a ring shape.

  Each of the first light emitting element 44 and the second light emitting element 46 is, for example, a packaged surface mount device (SMD) type white LED element. That is, each of the first light-emitting element 44 and the second light-emitting element 46 includes a white resin package (container) having a recess, an LED chip primarily mounted on the bottom surface of the recess of the package, and a recess in the package. And a sealing member sealed in the container. 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 a blue LED chip as excitation light.

  Thus, each of the 1st light emitting element 44 and the 2nd light emitting element 46 is a white LED element of the BY type comprised by the blue LED chip and the yellow fluorescent substance. Specifically, the yellow phosphor contained in the sealing member is excited by absorbing a part of the blue light from the blue LED chip and emits yellow light. The emitted yellow light and the blue light that is not absorbed by the yellow phosphor are mixed to generate white light. In this way, white light is emitted from each of the first light emitting element 44 and the second light emitting element 46.

  In the present embodiment, both the first light emitting element 44 and the second light emitting element 46 emit white light, but may emit light of different colors (wavelengths). For example, the first light emitting element 44 may emit white light and the second light emitting element 46 may emit light bulb color light.

[1-7. Lens cover]
Next, the lens cover 18 will be described with reference to FIGS. The lens cover 18 is an optical member for expanding the light distribution angle of light from each of the plurality of first light emitting elements 44.

  As shown in FIGS. 3 to 8, the lens cover 18 is formed in a ring shape and is made of a light-transmitting material (for example, a transparent acrylic resin). As shown in FIG. 8, the lens cover 18 is attached to one surface of the reflective cover 14 with screws 56 so as to cover the inner peripheral portions of the plurality of substrates 42. At this time, the lens cover 18 covers the plurality of first light emitting elements 44 of each of the plurality of substrates 42 and does not cover the plurality of second light emitting elements 46 of each of the plurality of substrates 42.

  The lens cover 18 has a plurality of lens portions 18 a corresponding to the plurality of first light emitting elements 44. Light from each of the plurality of first light emitting elements 44 passes through the corresponding lens portion 18a. At this time, each of the plurality of lens portions 18a expands the light distribution angle of the transmitted light.

[1-8. Cosmetic cover]
Next, the decorative cover 20 will be described with reference to FIGS. The decorative cover 20 is a cover for covering the reflective cover 14 and the instrument body 8 from the side to make up.

  As shown in FIGS. 5 to 7, the decorative cover 20 is formed in a ring shape. Specifically, the decorative cover 20 extends in a trumpet shape from one end (the end on the floor surface side) to the other end (the end on the ceiling 4 side). It is arranged so as to cover from the side. The decorative cover 20 is made of, for example, white polystyrene resin.

  As shown in FIGS. 6 and 7, a ring-shaped support portion 20 a that extends while curving toward the radially inner side of the decorative cover 20 and the other end portion of the decorative cover 20 is formed at one end portion of the decorative cover 20. ing. The support portion 20a supports the concave side of the curved portion 22b over the entire circumference of the curved portion 22b (described later) of the light guide plate 22.

  On the inner surface of the decorative cover 20, a ring-shaped protrusion 20 b extending over the entire circumference of the decorative cover 20 is formed. The protrusion 20 b is in contact with the flange portion 14 b of the reflective cover 14. Thereby, the decorative cover 20 is positioned with respect to the reflective cover 14.

[1-9. Light guide plate]
Next, the light guide plate 22 will be described with reference to FIGS. The light guide plate 22 is an optical member that guides light from each of the plurality of incident second light emitting elements 46 to the space 6. As shown in FIGS. 1 to 7, the light guide plate 22 is formed in a ring shape having a substantially circular opening 22 a. Specifically, the light guide plate 22 includes a curved portion 22b, an incident portion 22c, an emission portion 22d, and a plurality of attachment portions 22e. The light guide plate 22 is formed of a light-transmitting material (for example, a transparent acrylic resin).

  As shown in FIGS. 6 and 7, the bending portion 22b extends in a trumpet shape from one end (the end on the ceiling 4 side) to the other end (the end on the floor side). That is, the above-described opening 22a is formed radially inward of the curved portion 22b, and the plurality of first light emitting elements 44 and the lens cover 18 are disposed at positions facing the opening 22a. The curved portion 22b guides light from one end to the other end. The concave surface side of the curved portion 22 b is supported by the support portion 20 a of the decorative cover 20. The convex surface side of the curved portion 22b is covered with a reflecting portion 24a (described later) of the reflecting member 24. That is, the curved portion 22 b is sandwiched between the support portion 20 a of the decorative cover 20 and the reflection portion 24 a of the reflection member 24.

  The incident portion 22 c is formed in a ring shape over the entire circumference of one end portion of the curved portion 22 b and defines the inner peripheral portion of the light guide plate 22. The incident portion 22 c is disposed at a position facing and close to the plurality of second light emitting elements 46. That is, the plurality of second light emitting elements 46 are disposed at positions facing the inner peripheral portion of the light guide plate 22.

  The emitting portion 22d extends in a ring shape from the entire circumference of the other end portion of the curved portion 22b to the outside in the radial direction of the light guide plate 22, and defines the outer peripheral portion of the light guide plate 22. The emitting portion 22d protrudes outward in the radial direction of the light guide plate 22 from one end portion of the decorative cover 20, and is arranged in a substantially horizontal posture (that is, in a posture substantially parallel to the ceiling 4). The one surface (floor surface) of the emitting portion 22d is a surface from which light is emitted. A prism shape (not shown) is formed on the other surface (surface on the ceiling 4 side) of the emitting portion 22d by, for example, dot processing.

  As shown in FIGS. 5 to 7, the plurality of attachment portions 22 e extend from the incident portion 22 c toward the inside in the radial direction of the light guide plate 22. The plurality of attachment portions 22e are arranged at intervals in the circumferential direction of the incident portion 22c corresponding to the plurality of substrates 42. Each of the plurality of attachment portions 22e is attached to a predetermined region of the corresponding substrate 42 (a region between the plurality of first light emitting elements 44 and the plurality of second light emitting elements 46) with a screw 48 (see FIG. 8). It is attached.

[1-10. Reflective member]
Next, the reflecting member 24 will be described with reference to FIGS. The reflecting member 24 is a member for reflecting the light guided inside the curved portion 22 b of the light guide plate 22.

  As shown in FIGS. 4-7, the reflection member 24 is formed in the ring shape. Specifically, the reflecting member 24 includes a reflecting portion 24a, a pressing portion 24b, and a partition portion 24c. The reflecting member 24 is made of, for example, white polycarbonate resin.

  The reflecting portion 24a extends in a trumpet shape from one end (the end on the ceiling 4 side) to the other end (the end on the floor side). A reflecting surface is formed on the concave side of the reflecting portion 24a. The concave surface side of the reflecting portion 24 a covers the convex surface side of the curved portion 22 b over the entire circumference of the curved portion 22 b of the light guide plate 22.

  The pressing portion 24b extends in a ring shape from the entire circumference of one end of the reflecting portion 24a to the radially inner side of the reflecting member 24. The pressing portion 24b is attached to a predetermined region of each of the plurality of substrates 42 with screws 48 together with the plurality of attachment portions 22e. As a result, as shown in FIGS. 6 and 7, the front end portion of the pressing portion 24 b presses the outer peripheral portion of the lens cover 18 toward the plurality of substrates 42, thereby directing the plurality of substrates 42 toward the reflective cover 14. Will come to hold down.

  As shown in FIG. 7, the partition portion 24 c is formed in a ring shape over the entire circumference of the pressing portion 24 b and protrudes so as to partition between the outer peripheral portion of the lens cover 18 and the incident portion 22 c of the light guide plate 22. Yes. The partition portion 24 c is for shielding light between the lens cover 18 and the light guide plate 22. Therefore, the reflecting member 24 is formed of a material having a light shielding property (for example, an opaque resin material).

  Also, as shown in FIG. 10 described later, a plurality of engaging portions 58 that are engaged with the diffusion cover 26 are attached to the pressing portion 24b. The plurality of engaging portions 58 are arranged at intervals in the circumferential direction of the pressing portion 24b. For convenience of explanation, the plurality of engaging portions 58 are not shown in FIGS.

[1-11. Diffusion cover]
Next, the diffusion cover 26 will be described with reference to FIGS. 1 and 3 to 7. The diffusion cover 26 is a cover for diffusing light from each of the plurality of first light emitting elements 44.

  As shown in FIGS. 1 and 3 to 7, the diffusion cover 26 is detachably attached to each of the plurality of engaging portions 58 of the reflecting member 24 and is disposed so as to cover the opening 22 a of the light guide plate 22. ing. As shown in FIG. 3, the lens cover 18 is exposed from the opening 22 a of the light guide plate 22 by removing the diffusion cover 26 from the reflecting member 24. As shown in FIGS. 6 and 7, the diffusion cover 26 includes a diffusion portion 26a and an attachment portion 26b.

  The diffusion part 26 a is formed in a disk shape and is disposed so as to cover the opening 22 a of the light guide plate 22. The outer peripheral portion of the diffusing portion 26a projects outward in the radial direction of the light guide plate 22 from the other end portion of the curved portion 22b, and covers the inner peripheral portion of the emitting portion 22d. The diffusion portion 26a is formed of a light-transmitting material (for example, milky white acrylic resin).

  The attachment portion 26b extends in a trumpet shape from the entire circumference of the outer peripheral portion of the diffusion portion 26a in the axial direction (Z-axis direction) of the diffusion portion 26a. As shown in FIG. 11 described later, the inner peripheral portion of the attachment portion 26b is detachably engaged with each of the plurality of engagement portions 58. In this state, the attachment portion 26b is disposed so as to cover the convex surface side of the reflection portion 24a of the reflection member 24.

  In addition, as shown in FIG. 7, the outer peripheral part of the spreading | diffusion part 26a is formed in the taper shape. Thereby, since the thickness (size in the Z-axis direction) is generated in the diffusing portion 26a, the user can easily grasp the diffusing portion 26a by hand when attaching / detaching the diffusing cover 26.

[1-12. Characteristic configuration of lighting equipment]
Next, the characteristic structure of the lighting fixture 2 which concerns on embodiment is demonstrated, referring FIG.10 and FIG.11. FIG. 10 is a plan view showing the luminaire 2 according to the embodiment with the diffusion cover 26 omitted. 11 is a cross-sectional perspective view taken along line XI-XI in FIG.

  As shown in FIGS. 10 and 11, the pressing portion 24 b of the reflecting member 24 covers the outer peripheral portion of each of the plurality of substrates 42. As a result, the plurality of connectors 50 and the plurality of lead wires 52 and 54 are covered with the pressing portions 24 b of the reflecting member 24. At this time, since the reflecting member 24 is made of a light-shielding material, it is possible to suppress the shadows of the plurality of connectors 50 and the plurality of lead wires 52 and 54 from being seen through the diffusion cover 26 from the indoor side. .

[1-13. Lighting method]
Next, the lighting method by the lighting fixture 2 mentioned above is demonstrated, referring FIG.6 and FIG.7. By supplying DC power from the power supply unit 12 to the light emitting module 16, each of the plurality of first light emitting elements 44 and the plurality of second light emitting elements 46 emits light.

  As shown in FIGS. 6 and 7, the light from each of the plurality of first light emitting elements 44 passes through the corresponding lens portion 18 a of the lens cover 18 and then passes through the opening 22 a of the light guide plate 22 to diffuse the cover 26. Is incident on. The light incident on the diffusion cover 26 is emitted from the diffusion cover 26 while being diffused, and then irradiates the space 6. That is, the light from each of the plurality of first light emitting elements 44 directly irradiates the space 6 without entering the light guide plate 22.

  As shown in FIG. 7, a part of the light from each of the plurality of first light emitting elements 44 is reflected by the reflecting member 24 and the like and then reflected by one surface of the reflecting cover 14. The multiple reflected light enters the diffusion cover 26 as described above. Thereby, the light extraction efficiency can be increased.

  On the other hand, the light from each of the plurality of second light emitting elements 46 is incident on the incident portion 22c of the light guide plate 22 and then guided inside the curved portion 22b. Inside the bending portion 22b, the light is guided from the incident portion 22c toward the emitting portion 22d while being reflected by the reflecting portion 24a of the reflecting member 24. The light guided to the emitting portion 22d is emitted from one surface of the emitting portion 22d by being reflected by the prism shape formed on the other surface of the emitting portion 22d.

  As described above, since the partition portion 24c partitions the outer peripheral portion of the lens cover 18 and the incident portion 22c of the light guide plate 22, it is possible to suppress optical interference between the lens cover 18 and the light guide plate 22. be able to.

  As described above, the space 6 can be directly illuminated by the light from the diffusion cover 26, and the light can be illuminated from the space 6 by the light from the emitting portion 22 d of the light guide plate 22. In addition, when each of the plurality of first light-emitting elements 44 and the plurality of second light-emitting elements 46 is fully lit, the luminous flux of light radiated to the space 6 from each of the plurality of first light-emitting elements 44 is It is larger than the luminous flux of the light irradiated to the space 6 from the emitting portion 22d of the light guide plate 22.

  Thereby, the space 6 directly under the lighting fixture 2 is relatively brightly directly illuminated by the light from the diffusion cover 26, so that it is possible to ensure the illuminance necessary for reading or manual work, for example. On the other hand, the space 6 around the luminaire 2 is light-guided and illuminated relatively darkly as if it were indirect illumination by the light from the emitting portion 22d of the light guide plate 22, so that a feeling of relaxation can be produced.

  Note that in this embodiment, the case where the plurality of first light-emitting elements 44 and the plurality of second light-emitting elements 46 are turned on has been described. However, for example, the plurality of first light-emitting elements depending on the indoor atmosphere. Only 44 may be lit, or only a plurality of second light emitting elements 46 may be lit.

[2. effect]
The lighting fixture 2 of the present embodiment is a lighting fixture for illuminating the space 6. The luminaire 2 includes a plurality of substrates 42 arranged in a ring shape, a plurality of first light emitting elements 44 respectively mounted on the plurality of substrates 42, and at least an outer peripheral portion of each of a pair of adjacent substrates 42. A pair of mounted connectors 50, lead wires 52 that electrically connect the pair of connectors 50, and a reflecting member 24 formed in a ring shape, covering each outer peripheral portion of the plurality of substrates 42, and shielding light And a diffusion cover 26 for diffusing light from the plurality of first light emitting elements 44.

  According to this, since the reflecting member 24 covers each outer peripheral portion of the plurality of substrates 42, the pair of connectors 50 and the lead wires 52 are covered with the reflecting member 24. At this time, since the reflecting member 24 has a light shielding property, it is possible to prevent the shadows of the pair of connectors 50 and the lead wires 52 from being seen through the diffusion cover 26 from the indoor side. As a result, it is possible to suppress the shadow of the pair of connectors 50 and the lead wires 52 from being generated on the diffusion cover 26, and the lighting state of the lighting fixture 2 can be kept good.

  Further, the reflecting member 24 has an engaging portion 58 that is detachably engaged with the diffusion cover 26.

  According to this, the diffusing cover 26 can be detachably attached to the reflecting member 24 via the engaging portion 58.

  Furthermore, the lighting fixture 2 is formed in a ring shape having an opening 22 a and includes a light guide plate 22 for guiding light to the space 6. The plurality of light emitting elements are respectively mounted on the inner peripheral portions of the plurality of substrates 42, and the plurality of first light emitting elements 44 disposed at positions facing the openings 22 a of the light guide plate 22, and the plurality of substrates 42. And a plurality of second light emitting elements 46 disposed at positions facing the inner peripheral portion of the light guide plate 22.

  According to this, the space 6 can be illuminated directly with the light from the plurality of first light emitting elements 44, and the space 6 can be illuminated with the light from the light guide plate 22. By combining direct illumination and light guide illumination in this way, it is possible to enhance the lighting effect of the lighting fixture 2. In addition, since the plurality of first light emitting elements 44 for direct illumination and the plurality of second light emitting elements 46 for light guide illumination are mounted on the same substrate 42, the configuration of the lighting fixture 2 can be simplified. Can do.

  Furthermore, the luminaire 2 includes a reflective cover 14 that supports the substrate 42. The reflection member 24 covers a part of the light guide plate 22 and has a reflection portion 24a having a reflection surface for reflecting the light guided inside the light guide plate 22, and extends from the end of the reflection portion 24a. And a pressing portion 24b for pressing toward the reflection cover 14. The pressing portion 24 b covers the outer peripheral portion of each of the plurality of substrates 42.

  According to this, since the light incident on the light guide plate 22 is guided inside the light guide plate 22 while being reflected by the reflecting portion 24a, the light incident on the light guide plate 22 can be efficiently emitted from the light guide plate 22. . In addition, the pair of connectors 50 and the lead wires 52 can be covered by using the pressing portions 24b that press the plurality of substrates 42 toward the reflective cover 14.

  Furthermore, the light guide plate 22 is a curved portion 22b that guides light from one end portion to the other end portion, has an opening portion 22a, and extends in a trumpet shape from one end portion to the other end portion. The incident portion 22c is formed at one end of the bending portion 22b and receives light from the plurality of second light emitting elements 46, and extends radially outward from the other end of the bending portion 22b, and the light from the bending portion 22b. Has a light emitting part 22d from which light is emitted. The reflection part 24a covers the convex surface side of the bending part 22b over the entire circumference of the bending part 22b.

  According to this, since the light guide plate 22 has the curved portion 22b, the size of the light guide plate 22 in the radial direction can be kept small.

(Modifications, etc.)
While the present invention has been described based on the embodiments, the present invention is not limited to the above embodiments.

  In the above-described embodiment, the case where the construction material to which the lighting fixture 2 is attached is the ceiling 4. However, the construction material is not limited to this and may be, for example, a wall inside a building.

  Moreover, in the said embodiment, although the lighting fixture 2 was set as the ceiling light, it is not limited to this, For example, it is good also as a chandelier, a pendant light, a bracket light, a bathroom light, or a kitchen light.

  In the above embodiment, the mounting structure of the first light emitting element 44 and the second light emitting element 46 is the SMD structure. However, the present invention is not limited to this. For example, the COB ( (Chip On Board) structure. In this case, the plurality of LED chips mounted on the substrate 42 may be collectively sealed by the sealing member, or may be individually sealed. The sealing member may contain a wavelength conversion material such as the yellow phosphor described above.

  In the above embodiment, the case where the substrate 42 for mounting the first light emitting element 44 and the second light emitting element 46 and the substrate 36 for mounting the circuit component 38 are separate substrates has been described. However, the present invention is not limited to this, and the first light emitting element 44, the second light emitting element 46, and the circuit component 38 may be mounted on the same substrate.

  Moreover, in the said embodiment, although LED was illustrated as the 1st light emitting element 44 and the 2nd light emitting element 46, it is not limited to this, For example, semiconductor light emitting elements, such as a semiconductor laser, organic EL (Electro Luminescence) or You may use other solid light emitting elements, such as inorganic EL.

  In addition, it is realized by arbitrarily combining the components and functions in each embodiment without departing from the scope of the present invention, or the form obtained by making various modifications conceived by those skilled in the art to the above embodiment. Forms are also included in the present invention.

2 Lighting equipment 6 Space 14 Reflective cover (supporting member)
22 Light guide plate 22a Opening portion 22b Curved portion 22c Incident portion 22d Output portion 24 Reflective member (cover member)
24a Reflector 24b Presser 26 Diffusion cover 42 Substrate 44 First light emitting element (light emitting element)
46 2nd light emitting element (light emitting element)
50 Connector (connection member)
52, 54 Lead wire (wiring)
58 engaging part

Claims (5)

A lighting fixture for illuminating a space,
A plurality of substrates arranged in a ring,
A plurality of light emitting elements respectively mounted on the plurality of substrates;
A pair of connecting members respectively mounted on at least the outer peripheral portions of the adjacent pair of substrates;
Wiring for electrically connecting the pair of connection members;
A cover member formed in a ring shape, covering each outer peripheral portion of the plurality of substrates, and having a light shielding property;
A diffusion cover for diffusing light from the plurality of light emitting elements. The lighting apparatus according to claim 1, wherein the cover member has an engaging portion that is detachably engaged with the diffusion cover. The lighting apparatus further includes:
It is formed in a ring shape having an opening, and includes a light guide plate for guiding light to the space,
The plurality of light emitting elements are:
A plurality of first light-emitting elements mounted on the inner periphery of each of the plurality of substrates and disposed at positions facing the opening of the light guide plate;
The lighting apparatus according to claim 1, further comprising: a plurality of second light emitting elements that are respectively mounted on outer peripheral portions of the plurality of substrates and disposed at positions facing the inner peripheral portion of the light guide plate. . The lighting apparatus further includes a support member that supports the substrate,
The cover member is
A reflective portion that covers a part of the light guide plate and has a reflective surface that reflects the light guided inside the light guide plate;
A pressing portion that extends from an end of the reflecting portion and presses the plurality of substrates toward the support member,
The lighting fixture according to claim 3, wherein the pressing portion covers an outer peripheral portion of each of the plurality of substrates. The light guide plate is
A curved portion that guides light from one end to the other end, having the opening, and a curved portion that spreads in a trumpet shape from the one end to the other end;
An incident portion that is formed at the one end of the curved portion and receives light from the plurality of second light emitting elements;
An emission part that extends radially outward from the other end of the bending part and emits light from the bending part;
The lighting fixture according to claim 4, wherein the reflecting portion covers the convex surface side of the bending portion over the entire circumference of the bending portion.

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