Luminaire

Abstract

To provide a luminaire having excellent light diffusion performance and antiglare performance, and having a simple structure.SOLUTION: A luminaire 1 according to the present invention comprises: a main body 10; a light source 50 installed in the main body 10, and comprising a plurality of light emitting elements 52 surface-mounted on a board 51; and a light diffusion cover 30 covering a light emitting surface side of the light source 50. The light diffusion cover 30 comprises a plurality of light conversion parts 31 and a plurality of small light conversion parts 32 on the light emitting surface side. The plurality of small light conversion parts 32 are each close to the plurality of light conversion parts 31. Back surfaces of the light conversion parts 31 and the small light conversion parts 32 comprise concave lens-shaped concave parts 33 housing the light emitting elements 52.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a lighting fixture provided with a light diffusing cover.

Background Art

[0002] Focusing on the power saving and long life of LEDs, a plurality of lighting fixtures using LEDs have been proposed. For example, Patent Document 1 discloses a thin lighting fixture including a light source, a power supply unit that supplies power to the light source, and a holding body that holds the light source and the power supply unit. Patent Document 2 also discloses a thin lighting fixture including a light source and a fixture that integrally holds a light diffusing cover and a cover member.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] The lighting fixture of Patent Document 1 is intended to reduce the thickness of the lighting fixture. A substrate is attached to the main body, and a plurality of LEDs mounted on the substrate are covered with diffusing lenses for each LED so that the emitted light of the LEDs is diffused. However, in the aspect of the lighting fixture of Patent Document 1, processing is required to attach the substrate on which the LEDs are mounted to the main body, and since each LED is covered with a diffusing lens, there is a drawback that the configuration of the lighting fixture becomes complicated. Further, the lighting fixture of Patent Document 2 includes a light source and a fixture that integrally holds a light diffusing cover and a cover member. However, since it does not cover each LED element with a diffusing lens but covers the entire LED element with a single diffusing lens, there is a drawback that the light diffusing property of the LED element is not uniform and the anti-glare property is lacking.

[0005] Therefore, an object of the present invention is to provide a lighting fixture having excellent light diffusibility and antiglare property and a simplified configuration.

Means for Solving the Problems

[0006] To achieve the above object, the lighting fixture of the present invention includes: a main body, a light source installed on the main body and having a plurality of light-emitting elements surface-mounted on a substrate, a light diffusion cover covering the light-emitting surface side of the light source, the light diffusion cover has a plurality of light conversion portions and a plurality of small light conversion portions on the light-emitting surface side, each of the plurality of small light conversion portions is close to the plurality of light conversion portions, and the back surfaces of the light conversion portions and the small light conversion portions have concave lens-shaped recesses for housing the light-emitting elements. It is characterized by this.

[0007] Further, the light diffusion cover of the present invention is used in the lighting fixture of the present invention, and a light conversion portion facing a light-emitting element such as an LED is provided on the surface of the light diffusion cover.

Effects of the Invention

[0008] According to the present invention, in a lighting fixture having a light diffusion cover, a light source, and a cover member, by using a light diffusion cover provided with a light conversion portion, a lighting fixture having excellent light diffusibility and antiglare property and a thin and simple configuration can be obtained.

Brief Description of the Drawings

[0009]

Figure 1

Figure 2

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Figure 9

[0010] Embodiments of the present invention will be described. Note that the present invention is not limited to the following embodiments. Also, in the following figures, the same parts are denoted by the same reference numerals. The lighting fixture and the light diffusion cover of the present invention can be applied to various lighting fixtures such as ceiling lights of a type that are attached to wiring fixtures such as hook - ceiling rosettes arranged on the ceiling, pendant lights of a type that are suspended from the ceiling, and street lights.

[0011] In a general - household residence, wiring fixtures 3 such as hook - ceiling rosettes, hook - ceiling bodies, hook - ceilings, hook - rosettes, etc., which are used for attaching ceiling lights and the like to the ceiling, are installed. As shown in FIG. 6, the lighting fixture 1 is attached to the wiring fixture 3 installed on the ceiling 2 of the residence via an adapter 80.

[0012] Also, in a general - household residence, AC power is supplied from a commercial power source. By attaching an adapter 80 for the lighting fixture 1 to the wiring fixture 3 installed on the ceiling 2, the wiring fixture 3 and the adapter 80 are mechanically and electrically connected, and AC power is supplied from the in - house power line, through the wiring fixture 3, from the adapter 80 to the lighting fixture 1.

[0013] Here, the lighting fixture according to the embodiment of the present invention will be described with reference to the drawings. Note that the embodiments described below show specific examples of the present invention. Therefore, the arrangement, functions, numerical values, etc. of the components described in the embodiments are merely examples, and the scope of the present invention is not limited or construed by these.

[0014] (Embodiment) FIG. 1 is an exploded perspective view of the lighting fixture 1 according to the embodiment of the present invention. As shown in the figure, the lighting fixture 1 of the embodiment is composed of a main body 10, a light diffusion cover 30, a light source 50, and a cover member 60. The light diffusion cover 30, the light source 50, and the cover member 60 are integrally installed by a fixture 90 arranged on the main body 10. In the drawings, components such as wiring and screws are omitted (the same applies hereinafter).

[0015] The main body 10 is a member also known as a "chassis", which is formed into a circular shape from a flat plate of a metal material such as cold-rolled steel sheet, and a circular opening 13 is formed in the center. An adapter 80 for attaching the lighting fixture 1 to a wiring fixture 3 arranged on the ceiling 2 is attached to the opening 13 of the main body 10 (see FIG. 6). The opening 13 of the main body 10 is provided in common at the center of the main body 10, the light source 50, and the light diffusion cover 30 in order to insert the adapter 80.

[0016] The light source 50 has a plurality of light-emitting elements 52 such as LEDs mounted on a substantially rectangular substrate 51 having a substantially circular opening 13 formed in the center. The substrate 51 is not limited to a single flat plate, and may be formed into a substantially rectangular shape by connecting a plurality of substrates.

[0017] The light-emitting element 52 is a surface-mount type LED package, and a plurality of them are mounted on the substrate 51 at a predetermined interval. Also, as the light-emitting element 52, those with a daylight white emission color and those with a bulb color emission can be used, and these can be arranged alternately, and arranged at a predetermined interval from the adjacent light-emitting elements 52 in each row. By adjusting the current flowing through the light-emitting elements 52 with daylight white and bulb colors, color adjustment becomes possible. Also, as the light-emitting element 52, a light-emitting element 52 having an emission color other than daylight white and bulb color may be used. The number and arrangement of the light-emitting elements 52 can be appropriately set according to the desired output and the like. Also, an organic EL element may be used instead of the LED.

[0018] The light-emitting element 52 can function as a night light by dimming the entire light-emitting element 52 mounted on the substrate 51. However, by using one or a plurality of the light-emitting elements 52 as the light-emitting element 52 for the night light and adjusting the brightness, an environment where one can sleep at ease at night in a general household can be formed. In this case, the light-emitting element 52 preferably has a bulb color.

[0019] The substrate 51 is a substantially rectangular flat plate having an opening 13 in the center and chamfered corners 56. On the surface of the substrate 51, a plurality of mounted light-emitting elements 52, the light-emitting element 52 for the night light, and connection terminals 55 are arranged. In FIG. 1, the connection terminals 55 are arranged between the rows of the light-emitting elements 52 near the center of the outer peripheral edge of the substantially rectangular substrate 51, but it is not limited to this, and they may be arranged around the opening 13 or between the rows of the light-emitting elements 52. Also, a receiving unit (not shown) is arranged in the power supply device 20. The receiving unit receives a command signal such as an infrared ray transmitted from an external remote controller (not shown) and transmits it to the power supply device 20, and the power supply device 20 controls the dimming and color adjustment of the light source 50 according to the command signal from the remote controller. As the command signal from the remote controller, in addition to the infrared ray signal, a Wi-Fi (registered trademark) signal, a Bluetooth (registered trademark) signal, a mobile communication signal (for example, signals such as 3rd generation mobile communication (3G), 5th generation mobile communication (5G), Long Term Evolution (LTE) communication, Low Power, Wide Area (LPWA) communication, etc.) may be used.

[0020] The substrate 51 is made of a flat plate of glass epoxy resin (FR-4) which is an insulating material, and a wiring pattern is formed by silver foil on the surface side where the light-emitting element 52 is mounted. Note that the wiring pattern is not limited to this, and it may be formed on the back surface or inside of the substrate 51. Also, on the upper part of the wiring pattern, that is, on the surface of the substrate 51, a white resist layer acting as a reflection layer is provided. As the material of the substrate 51, when it is an insulating material, in addition to glass epoxy resin (FR-4), ceramic materials, synthetic resin materials, etc. can be applied. Also, when the substrate 51 is made of metal, a base substrate in which an insulating layer is laminated on one surface of a base plate such as aluminum having good thermal conductivity and excellent heat dissipation can be applied.

[0021] The light diffusion cover 30 is arranged so as to cover the light irradiation surface of the light source 50 without any gaps, and acts to diffuse the linear emitted light of the light-emitting element 52 and irradiate light omnidirectionally. On the surface of the light diffusion cover 30, convex portions 31 protruding from the surface of the light diffusion cover 30 are provided as light conversion portions 31 on the light emission surface side facing each of the light-emitting elements 52 mounted on the substrate 51 one by one. Due to the lens effect of the convex portions 31, the light emitted from the light-emitting element 52 is evenly diffused around, the glare of the light-emitting element 52 such as an LED is reduced, and light irradiation is performed efficiently. Note that the convex portions 31 are preferably hemispherical convex lenses, but appropriate shapes such as an elliptical shape, a triangular pyramid, a quadrangular pyramid, etc. may be adopted according to the application. Also, by forming a space for accommodating the light-emitting element 52 between the back surface of the light diffusion cover 30 and the substrate 51 into a concave lens-shaped recess 33, a light diffusion effect can be obtained by a synergistic effect with the convex portions 31. And, by making the light emission surface side of the light diffusion cover 30 flat and forming a space for accommodating the light-emitting element 52 between the back surface of the light diffusion cover 30 and the substrate 51 into a concave lens-shaped recess 33, light diffusibility may be provided.

[0022] The light diffusion cover 30 is formed of a transparent resin having light diffusibility, and for example, acrylics such as polycarbonate (PC), PMMA (polymethyl methacrylate), PS (polystyrene), etc. are used.

[0023] The cover member 60, also known as an alias "glove", covers the entire light irradiation surface of the lighting fixture 1. The cover member 60 has a substantially disk shape and is formed of a light-transmissive material. A milky white material is used to impart light diffusion and anti-glare properties. The cover member 60 covers the entire light-emitting surface sides of the light source 50, the light diffusion cover 30, and the fixture 90 without any gaps. Further, an inner convex portion 61 that protrudes inward along the circumferential direction of the edge is provided inside the bottom edge portion having an opening of the cover member 60 (see FIG. 9). Further, the material of the cover member 60 uses an acrylic resin such as PMMA (polymethyl methacrylate), but is not limited thereto, and synthetic resins such as polycarbonate and polystyrene may be used. Note that light diffusion and anti-glare properties may be imparted by processing the surface of the cover member 60 into a ground glass-like or slit-like pattern.

[0024] FIG. 2 is a schematic side view showing a state in which the cover member 60 is removed in the lighting fixture 1 of the embodiment. The main body 10 includes a downwardly convex concave portion 14 and a flat plate portion 11 around it. The fixture 90 is positioned and arranged on the flat plate portion 11 of the main body 10, and holds the light source 50 and the light diffusion cover 30 that closely adheres to the light source 50 and covers the light irradiation surface of the light-emitting element 52 without any gaps.

[0025] FIG. 3 is a plan view of FIG. 2 of the lighting fixture 1 of the embodiment. The substantially circular main body 10 has a flat portion 11 along the circumferential direction on the outer peripheral portion. The fixtures 90 are arranged at four locations on the flat plate portion 11 at a predetermined interval. The substantially circular light diffusion cover 30 has a narrow edge portion 37 in the circumferential direction at the outermost peripheral portion. Small holes 54 are formed in the edge portion 37, and the small holes 54 communicate with the small holes 95 of the fixture 90 and are fixed to the main body 10. Further, a light source 50 (dotted line portion) is housed inside the light diffusion cover 30.

[0026] On the surface of the light diffusing cover 30, a storage protrusion 40 for storing the connection terminal 55 installed on the substrate 51 is provided so as to protrude toward the light irradiation surface side. The connection terminal 55 is stored in a recess 33 provided in the storage protrusion 40 of the light diffusing cover 30. Further, as shown in FIG. 3, the light diffusing cover 30 includes a convex portion 31 as a light conversion portion that covers 77 light emitting elements 52, and a small convex portion 32 as a small light conversion portion that covers 26 light emitting elements 52. However, the number of light emitting elements and their arrangement on the substrate 51 can be appropriately changed according to the required light amount and the like. The small convex portion 32 provided near the convex portion 31 contributes to the improvement of diffusibility and anti-glare property by assisting the light irradiation of the light emitting element 52 arranged in the convex portion 31.

[0027] FIG. 3 is a plan view showing the pattern of the convex portion 31. Since the light emitting elements 52 mounted on the substrate 51 are respectively stored inside the convex portion 31, the mounting positions of the light emitting elements 52 are the same as the pattern of the convex portion 31. Therefore, in a plan view, the position of the convex portion 31 is the same as the position of the light emitting element 52 on the substrate 51. In the embodiment of FIG. 3, the convex portions 31 for storing the light emitting elements 52 are surface-mounted in a row along the outer edge portion of the substrate 51 and are arranged at substantially equal intervals on the circumferences of three rows so as to surround the central opening 13. The interval between the rows of the convex portions 31 at the outermost edge is the narrowest, and the interval between the rows of the convex portions 31 at the innermost edge is the widest. The rows of the convex portions 31 located in the middle are configured to be close to the outermost row near each side of the substantially square substrate 51 and to be separated at the corner portions 56. In addition, by arranging the light emitting elements 52 in a plurality of convex portions 31 near the corner portions 56 of the substrate 51, it is possible to adjust the light amount.

[0028] FIG. 4 is a schematic perspective view of FIGS. 2 and 3 of the lighting fixture according to the embodiment. The light diffusing cover 30 and the light source 50 are attached to the fixture 90, and a locking portion 44 for fixing the adapter 80 is provided at the inner peripheral portion of the opening 13 of the light diffusing cover 30 around the opening 13.

[0029] FIG. 5 is a partial cross-sectional view showing the mounting state of the main body 10, the light diffusion cover 30, and the light source 50 of the lighting fixture 1 according to the embodiment. In the figure, the fixture 90 is omitted, and the configurations of the main body 10, the light diffusion cover 30, and the light source 50 are schematically shown. The main body 10 has an annular recess 14 formed around the central opening 13, an inner peripheral portion 16 and a flat plate portion 11 formed in an annular shape at the peripheral edge and the outer peripheral portion of the opening 13 of the main body 10, respectively. Further, the main body 10 has a wall portion 15 that rises substantially perpendicular to the light irradiation direction from the flat plate portion 11 outside the flat plate portion 11. The wall portion 15 is used as a positioning member when attaching the cover member 60 to the main body 10. The small hole 36 is a screw hole for fixing the light diffusion cover 30 to the main body 10.

[0030] The light diffusion cover 30 includes an annular diffusion portion 45 formed around the opening 13, and wall portions 42 and 43 formed in a tapered shape on the inner peripheral side and the outer peripheral side of the diffusion portion 45, respectively. Further, at the contact portion of the wall portion 42 with the main body 10, there are provided an edge portion 38 that forms a substantially right angle with the wall portion 42 and is provided so as to contact the inner peripheral portion 16 of the main body 10, and a locking portion 44 that rises in an inverted L shape from the inner peripheral end of the edge portion 38. The edge portion 38 is provided with a small hole 36 for screwing to the main body. Further, an edge portion 37 located on the outer peripheral portion of the diffusion cover 30 is in contact with the flat plate portion 11 formed on the outer peripheral portion of the main body 10 and is formed so as to form an obtuse angle with the wall portion 43.

[0031] On the horizontal diffusion portion 45 of the light diffusion cover 30, a convex portion 31 protruding in the light emission direction and a protruding portion 34 protruding toward the substrate 51 side are formed. A plurality of light emitting elements 52 mounted on the surface of the substrate 51 are arranged in a recess 33 which is the internal space of the convex portion 31 of the diffusion portion 45. The inner surface of the diffusion portion 45 and the mounting surface of the substrate 51 are in contact with each other so that no gap is generated except for the convex portion 31 of the diffusion portion 45. Further, the convex portion 31 and the recess 33 formed in the diffusion portion 45 are configured to form a diffusion lens that uniformly diffuses light in the irradiation direction as a whole.

[0032] Further, the protrusions 34 provided on the back surface (inner surface) of the diffusion portion 45 of the light diffusion cover 30 are fitted into the small holes 54 formed in the substrate 51 to position the light emitting element 52 and the convex portion 31 on the substrate 51. The protrusions 34 are appropriately provided in several numbers on the inner surface of the diffusion portion 45. Thereby, the positions of the light diffusion cover 30 and the light source 50 are accurately determined, and the light emitted from the light emitting element 52 can be appropriately diffused from the convex portion 31.

[0033] FIG. 6 is a schematic cross-sectional view of the lighting fixture 1 according to the embodiment with the cover member 60 removed. As the adapter 80, a conventionally known one can be used. As a representative example of such an adapter 80, there is one having a flat cylindrical shape as shown in FIG. 6 and having a hook blade 85 that engages with a hook blade engagement hole (not shown) of a wiring fixture 3 such as an existing hook ceiling rose arranged on the upper surface side on the ceiling 2. The adapter 80 has a connector 84 that connects to the power supply device 20 in the lighting fixture 1. The wiring fixture 3 and the adapter 80 are mechanically and electrically connected by engaging the hook blade engagement hole and the hook blade 85.

[0034] The method of attaching the lighting fixture 1 to the ceiling 2 is as follows. First, the hook blade 85 of the adapter 80 is engaged with the hook blade engagement hole of the wiring fixture 3 to fix the adapter 80 to the wiring fixture 3. Next, the main body 10 is lifted, the adapter 80 is passed through the central opening 13 of the main body 10, and the main body 10 is pushed up until the pair of claw portions 81 of the adapter 80 cross over the inner peripheral portion 16 of the main body 10. Since the pair of claw portions 81 of the adapter 80 are biased by springs in both outer directions, when the main body 10 is lifted so as to cross over the claw portions 81, the claw portions 81 are fitted into the gap (attachment portion 82) between the inner peripheral portion 16 of the main body 10 and the locking portion 44 of the light diffusion cover 30, and the lighting fixture 1 is fixed to the adapter 80 via the attachment portion 82. Thereafter, the cover member 60 is aligned with the groove between the fixtures 90 and rotated to fix the cover member 60 to the main body 10. Then, the connector 84 of the adapter 80 is inserted into the power supply terminal 41 provided near the opening 13. Further, to remove the lighting fixture 1 from the ceiling 2 via the adapter 80, after removing the cover member 60, by pulling a pair of levers 83 on the lower surface of the adapter 80 inward, the claw portions 81 are pulled inward of the adapter 80, the engagement between the claw portions 81 and the locking portions 44 is disengaged, and the main body 10 can be removed.

[0035] As shown in FIG. 6, the power supply device 20 is disposed in the space between the recess 14 surrounding the opening 13 of the main body 10 and the light source 50. Thereby, even when the cover member 60 is removed, the power supply device 20 is not exposed to the outside by the light diffusion cover 30, electric shock or the like due to contact with a finger or the like can be prevented, and a lighting fixture with excellent safety can be provided.

[0036] The power supply device 20 includes a rectifying circuit that rectifies a current supplied from an external power supply such as AC 100V, a transformer that converts the rectified voltage into a predetermined voltage, a constant current supply circuit that supplies a constant current to the light source 50, a receiving unit that receives a command signal from an external remote controller (not shown), and a control unit that receives a transmission signal from the receiving unit and performs dimming and color adjustment of the light source 50 and the like. The power supply device 20 is connected to the external power supply through the wiring device 3 disposed on the ceiling, the connector 84 of the adapter 80, and the power supply terminal 41. Further, the power supply device 20 and the light source 50 are electrically connected through the connection terminal 55 disposed on the substrate 51, and the power supplied from the power supply device 20 is supplied to the light emitting element 52 of the light source 50.

[0037] FIG. 7 is a schematic perspective view showing the fixture 90 of the lighting fixture according to the embodiment, FIG. 8 is a plan view of the fixture 90 in FIG. 7, and FIG. 9 is a partial cross-sectional view showing the mounting state of the cover member 60 on the fixture 90 as seen from above along the line A-A' in FIG. 7. The fixture 90 shown in FIG. 7 has a holding portion 91 and an engaging portion 92. The holding portion 91 is formed of a substantially hexagonal plate-like member, and at least a part of the light source 50 is held on the upper surface of this plate-like member. The plate-like holding portion 91 is provided with convex guide portions 96 at the edge portions of two sides of the upper surface. Further, the plate-like holding portion 91 is supported from below by being coupled to vertical plate-like support members 94 at both left and right end portions. And the support member 94 and the side wall portion 102 are connected to a coupling member 93 at the lower end portion. The coupling member 93 functions as a fixing portion for fixing the fixture 90 to the main body 10 of the lighting fixture 1, but is not limited thereto, and may be coupled to the main body 10 of the lighting fixture 1 other than the coupling member 93. The engaging portion 92 has a plate-like ceiling portion 101 and a side wall portion 102, which are coupled in an inverted L shape. Further, a housing space 103 is formed between the ceiling portion 101 and the side wall portion 102. Also, as shown in FIG. 8, a leaf spring portion 107 is provided by making a curved cut in the ceiling portion 101 of the fixture 90, and a protrusion 100 is provided on the back surface of the leaf spring portion 107, whereby the cover member 60 can be securely fixed to the fixture 90.

[0038] FIG. 8 is a plan view of the fixture 90 in FIG. 7 as seen from the upper surface side. In the fixture 90, an arcuate leaf spring-like elastic protrusion 105 is formed in the housing space 103 of the side wall portion 102 of the engaging portion 92. Small holes 97 are formed in the holding portion 91 for fixing the corner portion 56 of the light source 50 by means such as screws. Also, small holes 95 are formed in the coupling member 93 for fastening the fixture 90 to the main body 10.

[0039] FIG. 9 is a cross-sectional view taken from the upper surface side of a plane A-A' in a state where the inner convex portion 61 of the cover member 60 is fitted into the fixture 90 shown in FIG. 7. As shown in the perspective view of FIG. 7 and the plan view of FIG. 8, a plate spring-like elastic protrusion 105 is formed on the fixture 90 on the side of the accommodation space 103 of the side wall portion 102 of the engaging portion 92. Further, adjacent to the elastic protrusion 105, a stop wall 108 for stopping the rotation of the inner convex portion 61 protrudes. As shown in FIG. 9, when a stopper protrusion 109 further protruding from the inner convex portion 61 of the cover member 60 is formed, when the inner convex portion 61 of the cover member 60 is disposed in the accommodation space 103 of the engaging portion 92 and rotated (in the upper arrow direction in the figure) during attachment of the cover member 60, the elastic protrusion 105 contacts the stopper protrusion 109, the elastic protrusion 105 is deformed, and the cover member 60 is allowed to rotate so that the stopper protrusion 109 gets over the elastic protrusion 105. When the stopper protrusion 109 abuts against the stop wall 108 at its tip, the rotation of the cover member stops. In this embodiment, an example in which the inner convex portion 61 of the cover member and the stopper protrusion 109 are separately configured is shown, but it is also possible to integrate the inner convex portion 61 and the stopper protrusion 109 and configure them as one convex portion. In such a form, the configuration of the cover member 60 can be further simplified.

[0040] The material of the fixture 90 may be, for example, made of metal or resin. Examples of such a metal material include colored steel sheets, zinc-plated steel sheets, spring stainless steel sheets, etc., and examples of the resin material include PP (polypropylene), PBT (polybutylene terephthalate), etc.

[0041] Since the fixture 90 is in close contact with the light diffusing cover 30 and the cover member 60 without any gap, it is possible to prevent insects, dust, etc. from the outside from entering the inside of the light diffusing cover 30 and the cover member 60 with a simple configuration without using a separate insect-proof member. Further, the number and position of the inner convex portions 61 of the cover member 60 can be arbitrarily set respectively. In addition, the heat generated from the light source 50 is radiated to the outside through the fixture 90 and the main body 10. Also, part of the heat is radiated to the outside through the cover member 60.

[0042] As described above, the present invention has been described with reference to the embodiments. However, the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

Industrial Applicability

[0043] According to the present invention, in a lighting fixture, it is possible to improve light diffusibility and anti-glare property and simplify the configuration. Therefore, in addition to a ceiling light of a type attached to a wiring fixture such as a hook ceiling rose arranged on the ceiling or a pendant of a type suspended from the ceiling, it can be applied to various lighting fixtures such as street lights.

Explanation of Reference Numerals

[0044] 1 Lighting fixture 2 Ceiling 3 Wiring fixture 10 Main body 11 Flat plate portion 13 Opening 14 Recess (bottom) 15 Wall portion 16 Inner peripheral portion 20 Power supply device 30 Light diffusion cover 31 Light conversion portion (convex portion) 32 Small light conversion portion (small convex portion) 33 Recess 34 Protrusion 36 Small hole 37 Edge portion 38 Edge portion 40 Storage convex portion 41 Power supply terminal 42 Wall portion (inner peripheral side) 43 Wall portion (outer peripheral side) 44 Locking portion 45 Diffusion portion 50 Light source 51 Substrate 52 Light-emitting element 54 Small hole 55 Connection terminal 56 Corner 60 Cover member 61 Inner convex part 80 Adapter 81 Claw part 82 Mounting part 83 Lever 84 Connector 85 Hooking blade 90 Fixture 91 Holding part 92 Engaging part 93 Coupling member 94 Support member 95 Small hole 96 Convex guide part 97 Small hole 100 Protrusion 101 Ceiling part 102 Side wall part 103 Accommodation space 105 Elastic protrusion 107 Leaf spring part 108 Stop wall 109 Stopper protrusion

Claims

1. a main body having an opening in the center; a fixture attached to the edge of the main body; a light source having a plurality of light-emitting elements mounted on a substrate; a light diffusion cover covering the light-emitting surface side of the light source; a lighting fixture comprising: the fixture integrally holds the light source and the light diffusion cover; the light diffusion cover has a flat surface on the light-emitting surface side, and the back surface on the side opposite to the light-emitting surface side is in contact with the mounting surface of the substrate, and a space for accommodating the plurality of light-emitting elements is formed as a concave lens-shaped recess between the back surface and the substrate; a lighting fixture characterized by the above.

2. On the surface of the light diffusion cover, a storage convex portion for storing connection terminals installed on the substrate is provided so as to protrude toward the light irradiation surface side. The lighting fixture according to Claim 1.

3. The light diffusion cover has a plurality of protruding portions protruding from the back surface, and the protruding portions are fitted into small holes formed in the substrate. The lighting fixture according to Claim 1.

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