JP6792284B2 - LED lighting device - Google Patents

Description

The present invention relates to an LED lighting device including an LED element as a light source.

Conventionally, there are LED lighting devices that can be attached to a member to be attached such as a hook ceiling by using an adapter (for example, Patent Documents 1 and 2).
On the other hand, LED lighting that can be attached to a member to be attached without using an adapter has also been proposed (for example, Patent Document 3).
The LED lighting device described in Patent Document 3 includes a hook blade holding member for holding the hook blade attached to the attached member and a base member on which the LED element is arranged in a state before the hook blade is attached to the attached member. Has an integrated configuration.

Japanese Patent No. 5790923 Japanese Unexamined Patent Publication No. 2014-120400 Japanese Patent No. 5793265

In the LED lighting device described in Patent Document 3, after the hook blade is attached to the attached member, a translucent cover that covers the LED element is attached to the base member. That is, a protective cover is provided to cover the LED element in order to prevent the LED element from being exposed when the hook blade is attached to the attached portion.
Therefore, there is a problem that the light extraction efficiency of the LED lighting device is deteriorated by about 3%.
INDUSTRIAL APPLICABILITY The present invention can improve the extraction efficiency of light emitted from an LED element in an LED lighting device in which a hooking blade holding portion for holding the hooking blade is integrated before the hooking blade is attached to the member to be attached. The purpose is to provide a structure that can be used.

The LED lighting device according to the present invention holds the hooking blade in a state before the hooking blade is attached to the attached portion in the LED lighting used by attaching the hooking blade to the attached member on the installation surface. A base member in which a hooking blade holding portion is integrated with a base plate, an LED module in which a plurality of LED elements are mounted on an LED substrate and mounted on the base plate, and a cover for covering the LED module are provided. The cover is fixed to the base member in a state of facing the LED module.

According to the above configuration, the cover is fixed to the base member before the hook blade is attached to the attached member. Therefore, a protective cover that covers the LED element inside the cover becomes unnecessary, and the light extraction efficiency can be improved.

(A) is a perspective view of the LED lighting device viewed from the front side, and (b) is a view of the LED lighting device viewed from the back side. It is sectional drawing of the LED lighting apparatus. It is a perspective view which looked at the state which disassembled the LED lighting apparatus from the front side. It is a perspective view which looked at the state which disassembled the LED lighting device from the back side. (A) is a perspective view of the base member viewed from the front side, and (b) is a perspective view of the base member viewed from the back side. (A) is an enlarged perspective view of the cross section of the base member viewed from the front side, and (b) is an enlarged perspective view of the cross section of the base member viewed from the back side. (A) is a view of the base member viewed from the front side, and (b) is a view of the base member viewed from the back side. (A) is a view from the front side of a state in which the LED module is half mounted on the base member, and (b) is a view from the back side of a state in which the power supply circuit unit is mounted on the base member. (A) is an enlarged perspective view of a cross section with the translucent cover and the center cover removed from the front side, and (b) is a cross section with the translucent cover and the center cover removed from the back side. It is an enlarged perspective view as seen. (A) is a perspective view of the cross section of the power supply circuit cover seen from the front side, and (b) is a perspective view of the cross section of the power supply circuit cover seen from the back side. (A) is an enlarged perspective view of a cross section with the center cover removed from the front side, and (b) is an enlarged perspective view of a cross section with the translucent cover shifted to the front side and viewed from the front side. Is. (A) is an enlarged cross-sectional perspective view of the outer peripheral portion of the LED lighting device viewed from the front side, and (b) is an enlarged cross-sectional perspective view of the inner peripheral portion of the LED lighting device viewed from the front side. (A) is an enlarged perspective view of the inner peripheral portion of the translucent cover viewed from the front side, and (b) is an enlarged perspective view of the inner peripheral portion of the translucent cover viewed from the back side. It is an enlarged perspective view which looked at the state which removed the center cover from the front side. It is an enlarged perspective view which looked at the cross section in the state which the center cover was shifted to the front side and removed.

<Overview>
The LED lighting device according to one aspect of the embodiment is an LED lighting device used by attaching a hooking blade to a member to be attached to an installation surface, and the hooking blade is in a state before being attached to the attached portion. It covers the base member in which the hooking blade holding portion for holding the hooking blade is integrated with the base plate, the LED module in which a plurality of LED elements are mounted on the LED substrate and mounted on the base plate, and the LED module. A cover is provided, and the cover is fixed to the base member in a state of facing the LED module. The term "opposing" as used herein means that there is no substance or object other than air between the cover and the LED module. Further, "fixed" means an attachment that cannot be normally removed and that the cover can be removed from the base member by using a tool.
In the LED lighting device according to another aspect of the embodiment, the hooking blade holding portion has transparency, and the cover has an opening in a portion corresponding to the hooking blade holding portion. The term "transparent" as used herein means having transparency so that the position of the hooking blade can be confirmed from the front side.
In the LED lighting device according to another aspect of the embodiment, a power supply circuit unit that supplies electric power to the LED module is mounted on the back surface of the base member. As a result, the power supply cable for supplying power from the power supply circuit unit to the LED module can be shortened.
In the LED lighting device according to another aspect of the embodiment, the power supply circuit unit is covered with a bottomed tubular power supply circuit cover, and the power supply circuit cover has a through hole that allows communication between the inside and outside of the power supply circuit cover. As a result, the temperature rise of the power supply circuit unit can be suppressed.

<Embodiment>
1. 1. Outline As shown in FIG. 1, the LED lighting device 1 according to the embodiment is a so-called ceiling light that is used by being attached to a member to be attached such as a hook ceiling or a hook rosette on an installation surface such as a ceiling (not shown). .. The main emission direction side in which light is emitted from the LED lighting device 1 is the front side, and the installation surface side is the back side. Further, the central axis is a virtual line passing through the center of the LED lighting device 1 and orthogonal to the installation surface.
The LED lighting device 1 includes a base member 2 as shown in FIGS. 1 to 4, particularly FIGS. 3 and 4, and includes an LED module 3 on the front side of the base member 2. The LED lighting device 1 includes a power supply circuit unit 4 that controls lighting of the LED module 3. The LED lighting device 1 includes a power supply circuit cover 5 that covers the power supply circuit unit 4. The LED lighting device 1 includes a translucent cover 6 that covers the LED module 3. The translucent cover 6 has an opening 6a in the center, and the LED lighting device 1 includes a center cover 9 that closes the opening 6a. The translucent cover 6 corresponds to an example of the "cover" of the present invention.
In this embodiment, the power supply circuit unit 4 is arranged on the back side of the base member 2. Further, in the present embodiment, the translucent cover 6 is composed of a frame 7 and a shade 8.
Each part will be described below.

2. 2. Each part configuration (1) Base member FIGS. 3 to 7, particularly FIGS. 5 to 7, will be described.
The base member 2 is an integrally molded product that integrally includes a metal base plate 21 and a resin hooking blade holding portion 25. The base plate 21 and the hooking blade holding portion 25 are integrated by, for example, insert molding or outsert molding. Outsert molding is preferable in consideration of the cost of the molding mold.
As shown in FIG. 8, the base plate 21 has a function of mounting the LED module 3 and the power supply circuit unit 4. As shown in FIG. 5B, the hooking blade holding portion 25 has a function of holding a pair of hooking blades 281,281.

(1-1) Base plate This will be described mainly with reference to FIGS. 5 and 7.
The base plate 21 is made by pressing a flat plate and has irregularities.
The base plate 21 has an annular shape having a through hole 211 (see FIG. 6) for the hooking blade holding portion 25 in the central portion. Here, since the through hole 211 has a shape similar to a circular shape and the outer peripheral shape also has a circular shape, the base plate 21 has a shape close to an annular shape as a whole (this shape is also included in the annular shape). It shall be.).
The base plate 21 has an annular flat portion 213 around the through hole 211. The flat portion 213 is formed with a recessed portion 215 that is recessed on the back side. The recessed portion 215 is composed of a radial recessed portion 215a extending in the radial direction at equal intervals in the circumferential direction and a circumferential recessed portion 215b extending in the circumferential direction on the outer peripheral side of the radial recessed portion 215a. The recessed portion 215 has a function of reinforcing the base plate 21. The outer peripheral edge of the flat portion 213 is located on the outer peripheral side of the circumferential recessed portion 215b.

The base plate 21 has an outer peripheral direction recessed portion 217 that is recessed on the outer peripheral side of the flat portion 213 on the back side of the flat portion 213. The base plate 21 has an outer peripheral direction protruding portion 219 that continuously projects to the front side on the outer peripheral wall 217a constituting the outer peripheral direction recessed portion 217. The outer peripheral direction recessed portion 217 has a flat portion at the concave bottom and a flat portion 219a at the protruding tip of the outer peripheral direction protruding portion 219.
The LED module 3 is mounted on the surface of the flat portion 213 (see (a) in FIG. 8). The power supply circuit unit 4 is mounted on the back side of the flat portion 213 (see (b) in FIG. 8). The back side of the flat portion 213 is covered with the power supply circuit cover 5, and the power supply circuit cover 5 is fixed to the flat portion 213 (see (a) in FIG. 9). A frame 7 forming a part of the translucent cover 6 is fixed to the outer peripheral direction protrusion 219 ((a) in FIG. 12).
In other words, the base plate 21 has a module mounting portion for mounting the LED module 3 on the front surface, a unit mounting portion for mounting the power supply circuit unit 4 on the back surface, and a frame mounting portion for mounting the frame 7 on the outer peripheral side. ing.

(1-2) Hooking blade holding portion This will be described mainly with reference to FIGS. 5 to 7.
The hooking blade holding portion 25 has a resin molded body 251 integrally formed with the base plate 21. The resin molded body 251 is made of a transparent resin material. The resin molded body 251 is made of a resin material having an insulating property. Here, polycarbonate is used for the resin molded body 251.
The hooking blade holding portion 25 has a pair of hooking blades 281,281 attached to the mounted member on the installation surface side in the resin molded body 251. The hooking blade holding portion 25 has a locking mechanism 283 that regulates the hooking blades 281,281 from being detached from the mounted portion in the resin molded body 251.

The resin molded body 251 has a shape similar to a bottomed cylinder. The resin molded body 251 has at least a tubular portion, a bottom portion, and an outer flange portion. The opening of the resin molded body 251 exists on the front side. The resin molded body 251 here is provided on the stepped tubular portion 253, the outer flange portion 255 provided at the opening side end of the stepped tubular portion 253, and the side opposite to the opening side end of the stepped tubular portion 253. It has a bottom 257 and a bottom. The central axis of the stepped tubular portion 253 coincides with the central axis of the LED lighting device 1.

The stepped tubular portion 253 has a cylindrical shape having an annular cross section orthogonal to the central axis. The stepped tubular portion 253 includes a large-diameter tubular portion 253a provided on the opening side and a small-diameter tubular portion 253b provided on the bottom 258 side, and has a step between the large-diameter tubular portion 253a and the small-diameter tubular portion 253b. Exists. Here, a flat portion existing between the large-diameter cylinder portion 253a and the small-diameter cylinder portion 253b and substantially orthogonal to the central axis of the stepped cylinder portion 251a is referred to as a step bottom portion 253c.
As shown in FIG. 11A, the large-diameter tubular portion 253a is fitted with an inner peripheral portion 85 existing around the opening (6a) of the shade 8 forming a part of the translucent cover 6 and an inner peripheral portion. 85 is fixed. That is, the large-diameter tubular portion 253a side of the stepped tubular portion 253 is a fixed portion for fixing the inner peripheral portion 85 of the shade 8.

The outer flange portion 255 is in close contact with the peripheral portion of the through hole 211 of the base plate 21. The outer flange portion 255 here is in close contact with the front side of the peripheral portion of the through hole 211 of the base plate 21. The outer peripheral edge shape of the outer flange portion 255 here has a regular octagonal shape corresponding to the LED module 3 when viewed from the front side.
The outer flange portion 255 has a plurality of projecting portions 255a through which the through holes of the base plate 21 are inserted along the circumferential direction. The protruding portion 255a passes through the through hole and is larger than the through hole on the back side of the base plate 21 (see FIGS. 5 and 6). As a result, the base plate 21 and the resin molded body 251 can be firmly bonded.
The outer flange portion 255 has a hole 255b for passing a power supply cable (not shown) connecting the power supply circuit unit 4 and the LED module 3 (see FIGS. 5 and 7). The hole 255b here has a long shape in the circumferential direction.
The outer flange portion 255 has a hole 255d formed to support the base plate 21 when forming the resin molded body 251. The hole 255d is closed with a sealing material (for example, polyvinyl chloride (PVC) or the like) so that insects, dust, etc. do not enter between the translucent cover 6 and the LED module 3 (not shown).

The bottom portion 257 has a protruding portion 257a that projects to the front side with a space inside. A pair of hooking blades 281,281 are fixed to the protruding portion 257a by a screw body 285 which is an example of a fixture (see FIG. 6B), or a lock mechanism 283 is provided. The bottom portion 257 has a recessed groove 257b extending from the base portion of the protruding portion 257a to the outer circumference (see FIGS. 5 and 7). A power receiving cable 29 for connecting the pair of hooking blades 281,281 and the power supply circuit unit 4 is arranged in the recessed groove 257b (see FIGS. 5 and 7). At this time, by wiring the power receiving cable 29 so as not to be close to the power supply circuit unit 4, it is possible to prevent the power supply circuit unit 29 from malfunctioning.

(2) LED module This will be described mainly with reference to FIG. 8A.
In FIG. 8A, the LED module 3 on the right side is removed so that the positional relationship between the radial recessed portion 215a of the base plate 21 and the LED module 3 can be seen.
There are a plurality of LED modules 3, for example, eight (see FIGS. 3 and 4). The eight LED modules 3 are arranged in an annular shape around the hooking blade holding portion 25 in the center of the base plate 21.
The LED module 3 has a plurality of LED elements 31 and an LED substrate 33 on which the plurality of LED elements 31 are mounted. Here, a plurality of types of LED elements 31 having different emission colors (for example, two types of neutral white and light bulb color) are used for toning and lighting.

Each LED substrate 33 has a shape similar to an outwardly expanding trapezoidal shape (this shape is also included in the trapezoidal shape) forming one-eighth of the regular octagonal ring shape. Each LED substrate 33 is fixed to the base plate 21 by a screw body 36, which is an example of a fixture, on the inner peripheral side and the outer peripheral side at substantially the center in the circumferential direction.
The LED substrates 33 adjacent to each other in the circumferential direction are connected by two lead wires (jumper wires) 34a and 34b on the inner peripheral side. The two lead wires 34a and 34b are for supplying power to two types of LED elements 31 having different emission colors. Most of the lead wires 34a and 34b are provided on the radial recessed portion 215a of the base plate 21 so as to be separated from the base plate 21. The ground of the LED substrate 33 uses a metal base plate 21.

Of the eight LED boards 33, one LED board 33A is provided with a socket (not shown) for connecting to a power supply cable connected to the power supply circuit unit 4. The socket is provided in the vicinity of the hole 255b (see FIG. 5) of the base plate 21 in the LED substrate 33A, and is covered with the connector cover 39.
The connector cover 39 covers a part of the inner peripheral side of the LED substrate 33 and also covers the hole 255b of the base plate 21. As a result, it is possible to prevent insects, dust, etc. from entering from the back side of the base member 2 to the front side of the LED module 3, and it is also possible to solve the problem of the separation distance between the wirings of the Denan Law. The connector cover 39 is fixed to the base plate 21 by a screw body 391 which is an example of a fixture.

The connector cover 39 has a cover main body 39a that covers the connector and a tubular portion 39b that is connected to the cover main body 39a. Of the eight LED boards 33, one LED board 33A is provided with a nightlight 35. The nightlight 35 is provided so as to be located in the tubular portion 39b of the connector cover 39. As a result, when the nightlight 35 is turned on, the shadow of the connector cover 39 or the like can be prevented from being reflected on the shade 8.
Of the eight LED boards 33, one LED board 33A is provided with a transmission element 37 for a remote controller and a reception element 38.

(3) Power supply circuit unit This will be described mainly with reference to FIG. 8B.
The power supply circuit unit 4 includes a power conversion circuit for generating electric power supplied to the LED element 31 from AC power (commercial power supply), a dimming circuit for dimming lighting, and a toning circuit for dimming lighting. Etc. Since the dimming can be performed in units of the LED elements 31 of each light emitting color, the color can be adjusted by adjusting the current supplied to the LED elements 31 of each light emitting color.
The power supply circuit unit 4 includes a plurality of circuit components (not shown) and a circuit board 43 on which the circuit components are mounted. Needless to say, the circuit component is an electronic component that constitutes the above circuit.
The circuit board 43 has a wiring pattern for mounting circuit components on a surface (surface) facing the base plate 21. The short electronic components are mounted on the front side of the circuit board 43. Tall electronic components are arranged on the back surface side of the circuit board 43. The lead wire of the tall electronic component penetrates the circuit board 43 and is connected to the wiring pattern on the front side. With this configuration, the circuit board 43 can be a single-sided substrate, and the cost can be reduced. The power receiving cable 29 is connected to the connector 45 on the back surface of the circuit board 41.

The circuit board 43 has a shape close to a rectangular shape, and the central portion of one of the long sides is recessed in an arc shape corresponding to the outer peripheral shape of the hooking blade holding portion 25. The circuit board 43 is provided with connectors 45 for the power receiving cable 29 and connectors for the power feeding cable at both ends in the longitudinal direction. As a result, the length of the power receiving cable 29 and the power feeding cable can be shortened. The connector for the power supply cable is provided on the surface of the circuit board 43 near the hole 255b of the base plate 21, and is not shown in FIG. 8B.

The circuit board 43 has a through hole at a position close to the arc-shaped recessed portion and separated in the longitudinal direction of the circuit board 43. A protruding portion 255c (see FIG. 5B) formed in the outer flange portion 255 is inserted into this through hole. The protruding portion 255c protrudes from the front side of the base plate 21 to the back side through the through hole of the base plate 21. Thereby, the positioning of the circuit board 43 can be easily performed.
Ribs are formed in the region from the base of the protruding portion 255c to the middle in the protruding direction. The tip of the protruding portion 255c inserts the through hole of the circuit board 43, and the surface of the circuit board 43 is supported by ribs, so that a space for circuit parts is easily provided between the base plate 21 and the circuit board 43. be able to.
Of the radial recessed portions 215a in the base member 2 (base plate 21), the radial recessed portion 215a facing the circuit board 43 has a deep recessed portion 215c that is further recessed to the back side as shown in FIG. It is provided at the central end of 21. The circuit board 43 is in contact with the deep recessed portion 215c via the insulating sheet 49, and is fixed in a state of being supported by the protruding portion 255c. A space can be secured between the circuit board 43 and the flat portion 213 of the base plate 21 by the deep recessed portion 215c and the protruding portion 255c. The circuit board 43 is fixed by a screw body 47, which is an example of a fixture.

(4) Power supply circuit cover This will be described mainly with reference to FIGS. 9 and 10.
As shown in FIG. 9, the power supply circuit cover 5 exposes the bottom portion 257 of the hooking blade holding portion 25 and the outer peripheral portion (outer peripheral direction recessed portion 217 and outer peripheral direction protruding portion 219) of the base plate 21, and the base member 2 It is attached to. As a result, most of the power supply circuit unit 4 and the hooking blade holding portion 25 except the bottom portion 257 are covered.

The power supply circuit cover 5 has a bottomed tubular portion 51 having a low height (shallow depth). The bottomed tubular portion 51 has a tubular portion 511 and a bottom portion 513. The front-back dimensions (height and depth) of the tubular portion 511 are at least larger than the front-back dimensions of the power supply circuit unit 4 to be accommodated.
The bottomed tubular portion 51 has an opening 51a in the central portion of the bottom portion 513. The bottomed tubular portion 51 has a flat portion 515 located on the base member 2 side of the bottom portion 513 at the peripheral portion of the opening 51a.
As shown in FIG. 9B, the stepped tubular portion 253 of the hooking blade holding portion 25 is fitted into the opening 51a of the bottomed tubular portion 51. Here, the small diameter tubular portion 253b in the stepped tubular portion 253 fits into the opening 51a. The bottom portion 513 is located on the installation surface side of the hook blade holding portion 25 with respect to the bottom portion 257, and is substantially at the same position as the installation surface side end of the hook blade 281. The flat portion 515 has a chipped portion 515a (see FIG. 10). The chipped portion 515a fits into the convex portion 253d (see FIG. 5B) on the outer periphery of the stepped tubular portion 253. As a result, the power supply circuit cover 5 is positioned in the circumferential direction with respect to the hooking blade holding portion 25. The shapes of the chipped portion 515a and the convex portion 253d correspond to each other. Further, the members provided with the chipped portion 515a and the convex portion 253d may be reversed.
The bottomed tubular portion 51 has an engaging portion for engaging with the hooking blade holding portion 25 side around the opening 51a. The engaging portion 515b here extends from the back surface of the flat portion 515 to the base member 2 side, and engages with the engaged portion 253e (see (b) of FIG. 5) of the hooking blade holding portion 25.

The bottom portion 513 has a plurality (for example, two) of stretch pieces 513a extending toward the circuit board 43 at a portion facing the power supply circuit unit 4 (see (a) in FIG. 10). The stretched tip of the stretched piece 513a comes into contact with the circuit board 43. The stretched piece 513a has a "ten" -shaped cross section.
The bottomed tubular portion 51 has an inclined portion 517 between the bottom portion 513 and the flat portion 515 and in two regions facing each other with the opening 51a interposed therebetween. The inclined portion 517 is inclined so as to be separated from the installation surface as it approaches the opening 51a. As a result, the LED lighting device 1 can be attached even when the attached portion is an embedded rosette with ears.
An elastic member (here, the sponge 55) is provided on the back surface (the surface on the installation surface side) of the power supply circuit cover 5. As a result, it is possible to fill the gap with respect to the installation surface of the LED lighting device 1 and eliminate rattling.

The bottomed tubular portion 51 has a communication portion 519 that enables communication between the inside and outside of the power supply circuit cover 5. A plurality of communication portions 519 here are provided along the circumferential direction at a portion of the tubular portion 511 near the bottom portion 513. The communication portion 519 is composed of a hole (gap) 519b formed in the side plate of the recess 519a that is recessed toward the central axis. The size of the hole 519b is set to 0.2 [mm] or less to prevent insects, dust, etc. from entering without hindering the heat dissipation effect.

The power supply circuit cover 5 has a base portion 53 in addition to the bottomed tubular portion 51. The base portion 53 here extends radially outward from the opening side end of the bottomed tubular portion 51. That is, the base portion 53 is provided in the shape of an outer collar at the opening side end portion of the bottomed tubular portion 51.
The base portion 53 extends from the opening side end of the bottomed tubular portion 51 to the front side from the outer peripheral end of the stepped annular portion 531 extending in a direction orthogonal to the central axis of the tubular portion 511. It has a tubular portion 533 to be formed.
The stepped annular portion 531 is located on the outer peripheral side of the tubular portion 511 and on the front side of the first annular portion 531a and on the outer peripheral side of the first annular portion 531a and on the back side of the first annular portion 531a. It has a second annular portion 531b located in a stepped shape.
As shown in FIG. 9, the first annular portion 531a abuts on the circumferential recessed portion 215b of the base member 2. The power supply circuit cover 5 is fixed to the base member 2 from the fixture in a state where the first annular portion 531a is in contact with the circumferential recessed portion 215b. The fixture is a screw body 57 (see FIG. 9).

The power supply circuit cover 5 has a positioning portion 535 with respect to the base member 2. The positioning portion 535 is composed of a stretch piece 535a extending from the surface of the second annular portion 531b to the front side. The stretched piece 535a has a “+” -shaped cross section on the base side in the stretching direction, and the tip side thereof has a columnar shape. As shown in FIG. 9, the portion having a “+” cross section abuts on the base plate 21, and the cylindrical portion is the through hole 213b (see FIG. 5) of the base plate 21 and the through hole 33a (see FIG. 5) of the LED substrate 33. (See (a) of FIG. 8) is inserted. The LED board 33 is also positioned by the positioning unit 535 of the power supply circuit cover 5.
The stretched tip of the tubular portion 533 of the base portion 53 comes into contact with the flat portion 213 of the base plate 21 as shown in FIG. The stepped annular portion 531 of the base portion 53 abuts on the circumferential recessed portion 215b of the base plate 21, and the tubular portion 533 of the base portion 53 abuts on the base plate 21. As a result, it is possible to prevent insects, dust, and the like from entering the power supply circuit cover 5.

(5) Translucent cover This will be described mainly with reference to FIGS. 3 and 4.
The translucent cover 6 is composed of a plurality of members. Here, the translucent cover 6 is composed of two resin members. As a result, the degree of freedom in shape design of the translucent cover 6 can be increased.
The translucent cover 6 has an opening 6a at a portion facing the hooking blade holding portion 25. That is, the translucent cover 6 has an annular shape. Here, the translucent cover 6 has an annular shape when viewed from the front side (irradiated surface side).
The translucent cover 6 is composed of a frame 7 located on the outer peripheral side and a shade 8 located on the inner peripheral side of the frame 7.

(5-1) Frame This will be described mainly with reference to (a) of FIGS. 11 and 12.
The frame 7 is made of, for example, a light guide type resin. As the light guide type resin, for example, acrylic (PMMA), general-purpose polystyrene (GPPS) and the like can be used. The frame 7 guides the incident light from the portion facing the space accommodating the LED module 3 and emits it to the surroundings.
The frame 7 is mounted on the outer peripheral portion of the base member 2. Here, the frame 7 is fixed to the base member 2 in a state before the LED lighting device 1 is attached to the attached portion of the installation surface.

The frame 7 has a rotating body structure in which a V-shaped portion having an opening facing the installation surface and having a shape close to a "V" shape is rotated around a virtual rotation axis passing through the center of the base member 2. .. The virtual rotation axis coincides with the central axis.
Here, the annular portion formed by the sides located outside the V-shaped portion is referred to as the outer annular portion 71. The sides located inside the V-shaped portion are a parallel portion extending parallel to the virtual rotation axis, an extension portion extending from the back end of the parallel portion toward the virtual rotation axis, and an inner peripheral end to the front side of the extension portion. Has a U-shaped portion extending in a "U" shape. The tubular portion composed of the parallel portions is referred to as a tubular portion 73, the annular portion composed of the extended portion is referred to as an inner annular portion 75, and the annular portion composed of a U-shaped portion. The portion marked with is referred to as a U-shaped ring portion 77.

The outer ring portion 71 has a function of emitting light transmitted through the frame 7. It also has a function of improving the design of the LED lighting device 1. The outer ring portion 71 extends outward so as to approach the installation surface as the distance from the tubular portion 73 increases. Here, the outer ring portion 71 has a curved surface shape that is convex on the front side. The outer peripheral end portion 71a of the outer ring portion 71 becomes thicker as it approaches the outer peripheral side end. The outer peripheral end surface of the outer ring portion 71 is configured so that the back end is located inside (virtual rotation axis side) with respect to the virtual line passing through the front end and orthogonal to the installation surface. As a result, more light is emitted from the outer peripheral side end of the outer ring portion 71 to the installation surface side, and the installation surface side can also be illuminated.
The outer peripheral end surface of the outer ring portion 71 has a range of 30 [degrees] or more and 80 [degrees] or less, preferably 45 [degrees] or more and 65 [degrees] with respect to the virtual line passing through the front side end and orthogonal to the installation surface. Degree] It is set within the following range.

The frame 7 has a function of mounting the outer peripheral end portion of the shade 8. The mounting function is composed of a tubular portion 73 and an inner ring portion 75. That is, as shown in FIG. 11B, the mounting portion 78 to which the outer peripheral end portion of the shade 8 is mounted is the erection portion 75a erected from the surface of the inner ring portion 75 along the tubular portion 73. It is composed of a tubular portion 73. That is, the tubular portion 73 and the upright portion 75a form a groove 78a into which the outer peripheral end portion of the shade 8 is inserted (see (b) in FIG. 11 and (a) in FIG. 12).
As shown in FIG. 11B, a plurality of upright portions 75a are provided at intervals in the circumferential direction. The tubular portion 73 has an engaged portion 73a that engages with an engaging portion 83b (see FIGS. 3 and 4) of the outer peripheral portion 83 of the shade 8 at a portion corresponding to the adjacent standing portions 75a. (See (b) in FIG. 11). Here, the engaged portion is convex and the engaged portion 73a is concave.
As shown in (b) of FIG. 11 and (a) of FIG. 12, the tubular portion 73 has a step 73b whose front end portion opens outward. As shown in FIG. 12A, a packing 65 for sealing is arranged on the step 73b of the tubular portion 73. For the packing 65, for example, an O-ring-shaped transparent rubber packing is used.

The inner ring portion 75 has a flat plate shape, and is inclined toward the back side from the tubular portion 73 to the U-shaped ring portion 77.
The U-shaped ring portion 77 is configured so that the "U" -shaped opening is on the back side. The U-shaped ring portion 77 has a function of attaching the frame 7 to the base member 2 (to the base plate 21). The outer peripheral direction protrusion 219 of the base plate 21 is housed in the groove 77a formed by the U-shaped ring portion 77. Here, the flat portion 219a of the outer peripheral direction protruding portion 219 of the base plate 21 comes into contact with the bottom portion of the U-shaped annular portion 77. In this contact state, the frame 7 and the base plate 21 are fixed by a fixture. An example of the fixture here is a screw body 79.

(5-2) Shade This will be described mainly with reference to FIGS. 11 and 12.
The shade 8 mainly covers the LED module 3. The shade 8 has an annular shape in which a bulging portion that bulges toward the side opposite to the installation surface is rotated around a virtual rotation axis orthogonal to the installation surface. The shade 8 here has an annular shape when viewed from the irradiated surface side. The central opening of the shade 8 is the same as the central opening 6a of the translucent cover 6. Therefore, the sign of the opening of the shade 8 is also set to "6a".
The shade 8 includes a shade main body 81 formed in an annular shape by the above-mentioned bulging portion, an outer peripheral portion 83 provided at the outer peripheral end of the shade main body 81, and an inner peripheral end provided at the inner peripheral end of the shade main body 81. It has a peripheral portion 85.

The bulging portion constituting the shade main body portion 81 bulges to the front side in a curved shape. As shown in FIGS. 11A and 12B, the inner peripheral edge of the shade main body 81 is located near the surface of the LED substrate 33 of the LED module 3 mounted on the base member 2. In other words, in the direction orthogonal to the installation surface (front and back directions), the inner peripheral edge of the shade main body 81 is on the front side of the LED element 31 and at a position close to the LED element 31. As a result, the light emitted from the LED element 31 toward the opening 6a side of the translucent cover 6 passes through the shade main body 81, and the light distribution characteristics can be easily adjusted. In addition, the light extraction efficiency can be improved.

As shown in FIG. 11A, the outer peripheral edge of the shade main body 81 is the front end of the inner peripheral wall of the U-shaped ring portion 77 in the LED element 31 and the frame 7 arranged on the outermost periphery of the LED module 3. It is located on the line of the virtual line X1 connecting with or in the vicinity of the virtual line X1. As a result, the light emitted from the LED element 31 toward the outer peripheral side of the translucent cover and not blocked by the base member 21 passes through the shade main body 81 and the frame 7, making it easy to adjust the light distribution characteristics. Can be done.

Here, in the shade main body 81, a portion facing the LED element 31 arranged on the outermost circumference of the LED module 3 or a peripheral portion thereof is referred to as a top portion 81a. The top portion 81a is the position of the shade main body portion 81 that is farthest from the installation surface in the light emitting direction.
The portion of the shade main body 81 from the inner peripheral edge to the top 81a bulges in an arc shape, and the portion of the shade main body 81 from the outer peripheral edge to the top 81a bulges in an arc shape close to a straight line. That is, the gradient from the inner peripheral edge to the apex 81a is steeper than the gradient from the outer peripheral edge to the apex 81a. In other words, the radius from the inner peripheral edge to the top 81a is smaller than the radius from the outer peripheral edge to the top 81a.

As shown in FIGS. 11 (b) and 12 (a), the outer peripheral portion 83 projects like a brim from the outer peripheral edge of the shade main body portion 81 to the back side. The end of the outer peripheral surface of the outer peripheral portion 83 on the shade main body 81 side is an overhanging portion 83a that projects outward. That is, the outer peripheral surface of the outer peripheral portion 83 has a stepped shape.
The outer peripheral portion 83 is inserted into the groove 78a of the frame 7 as shown in FIG. 12A. The packing 65 arranged on the step 73b of the tubular portion 73 is compressed by the overhanging portion 83a of the outer peripheral portion 83 to exert a sealing function.
As shown in FIGS. 3 and 4, the outer peripheral portion 83 has engaging portions 83b at intervals in the circumferential direction. As described above, the engaging portion 83b engages with the engaged portion 73a (see (b) of FIG. 11) provided in the tubular portion 73 of the frame 7.

The inner peripheral portion 85 will be described with reference to FIG. 12 (b) and FIG.
As shown in FIG. 12B, the inner peripheral portion 85 has a mounting function for mounting the shade 8 on the hooking blade holding portion 25 of the base member 2. As shown in FIG. 1A, the shade 8 has a mounting function for mounting the center cover 9 in a detachable manner.
The inner peripheral portion 85 is a tubular portion 851 that extends from the inner peripheral edge of the shade main body 81 to the back side (base member 2 side), and an extension plate that extends from the back side end of the tubular portion 851 toward the central axis of the tubular portion 851. It has a part 853 (see FIG. 13).
As shown in FIG. 12B, the tubular portion 851 abuts or is in close contact with the large diameter tubular portion 253a of the hooking blade holding portion 25. When the shade 8 is attached to the hooking blade holding portion 25, the tubular portion 851 becomes parallel to the large diameter tubular portion 253a.
A plurality of stretch plate portions 853 are provided at intervals in the circumferential direction. Here, four are provided at equal intervals. The stretch plate portion 853 is stretched from a position slightly moved to the front side from the back side end of the cylinder portion 851. The extension plate portion 853 has an elongated hole 853a in which the central portion side of the tubular portion 851 opens. As shown in FIG. 14, a screw body 87, which is an example of a fixture, is inserted into the elongated hole 853a from the front side. The screw body 87 is screwed into the screw hole 253 g (see (a) of FIG. 9) of the boss 253f (see (b) of FIG. 6 and (b) of FIG. 7) of the step bottom portion 253c of the hooking blade holding portion 25. ..

The inner peripheral portion 85 has a groove plate portion 855 that forms a groove 855a that opens on the front side with the tubular portion 851 between the plurality of stretch plate portions 853. The groove plate portion 855 has a bottom plate portion 855b extending from a position slightly moved to the front side from the back side end of the tubular portion 851 toward the central axis, and a side plate portion 855c extending from the inner peripheral end of the bottom plate portion 855b to the front side. .. The tubular portion 93 of the center cover 9 shown in FIG. 15 fits into the groove 855a.
As shown in FIG. 13B, a protrusion 855d projecting to the back side is provided on a portion straddling the back surface of the bottom plate portion 855b and the side plate portion 855c. The protrusion 855d fits into the through hole 253h of the step bottom portion 253c of the hooking blade holding portion 25. As a result, the rotation of the shade 8 with respect to the base member 2 around the central axis is restricted.

When the shade 8 is attached (fixed) to the base member 2 and the frame 7, the inner peripheral portion 85 has a substantially surface surface and a substantially surface surface of the small diameter tubular portion 253b of the hooking blade holding portion 25, as shown in FIG. 12 (b). It has an inner peripheral plate portion 857 that becomes one. The inner peripheral plate portion 857 is formed between the stretched plate portions 853. As a result, when the LED lighting device 1 from which the center cover 9 is removed is attached to the held portion of the installation surface, the safety when the protruding portion 257a (see FIG. 14) of the hooking blade holding portion 25 is gripped is improved.

As shown in FIG. 12B, the inner peripheral portion 85 has a connecting plate portion that connects the inner peripheral plate portion 857 and the side plate portion 855c. As shown in FIG. 13A, the connecting plate portion is a middle connection between the end connecting plate portion 859a connected at the front end of the inner peripheral plate portion 857 and the connecting plate portion connected in front of the front end of the inner peripheral plate portion 857. There is a plate portion 859b.
The center cover 9, which will be described later, is rotated around the central axis when it is attached to the shade 8. The direction of rotation when attaching is the wearing direction, and the direction of rotation when removing is the de-direction. As shown in FIG. 13B, there are a middle connecting plate portion 859b and an end connecting plate portion 859a between the adjacent stretched plate portions 853. The end connecting plate portion 859a on the upstream side in the landing direction is referred to as the upper end connecting plate portion 859a, and the end connecting plate portion 859a on the downstream side is referred to as the lower end connecting plate portion 859a. The larger area of the end connecting plate portion 859a is the lower end connecting plate portion.
The end portion of the middle connecting plate portion 859b on the de-direction side is an inclined surface that shifts to the front side as it approaches the upper end connecting plate portion 859a adjacent in the de-direction. The middle connecting plate portion 859b is continuous (connected) with the upper end connecting plate portion 859a adjacent in the detaching direction, and is not continuous (connected) with the lower end connecting plate portion 859a adjacent in the landing direction. That is, there is a gap between the middle connecting plate portion 859b and the lower end connecting plate portion 859a.
When the center cover 9 is rotated around the central axis when the center cover 9 is attached to the shade 8, the engaging piece 95 (see FIG. 15) of the center cover 9 is guided by the inclined portion of the middle connecting plate portion 859b and attached. It moves in the direction and engages with the lower end connecting plate portion 859a. The lower end connecting plate portion 859a is an engaged portion of the engaging piece 95 of the center cover 9.
The inner peripheral portion 85 has a middle connecting plate portion 859b and a bottom plate portion 855b at a position slightly shifted to the front side from the back side end of the tubular portion 851 (see (b) in FIG. 13). Therefore, when the shade 8 is fixed to the step bottom portion 253 of the hooking blade holding portion 25, the back end of the cylinder portion 851 and the back end of the side plate portion 855c come into contact with the step bottom portion 253 as double ridges. .. This can prevent the invasion of insects.

(6) Center cover This will be described mainly with reference to FIG.
The center cover 9 has a function of closing the opening 6a in the center of the translucent cover 6.
The center cover 9 has a cover main body 91 that closes the opening 6a, and a tubular portion 93 that extends from the peripheral edge of the cover main body 91 to the back side. The tubular portion 93 is inserted into the groove 855a of the shade 8.
The center cover 9 has an engaging piece 95 that engages with the lower end connecting plate portion 859a, which is the locked portion of the shade 8. A plurality of engaging pieces 95 (for example, four) are provided at intervals in the circumferential direction. The tip portion of the engaging piece 95 in the circumferential direction is separated from the cover main body portion 91. This separated portion engages with the lower end connecting plate portion 859a.
The engaging piece 95 stands upright from the back surface of the cover main body 91 and extends in the circumferential direction. Of the plurality of (here, four) engaging pieces 95, one pair of engaging pieces 95 facing each other has a convex portion 95a on the surface on the central axis side toward the central axis. When the center cover 9 is rotated by a predetermined amount in the landing direction with respect to the shade 8, the convex portion 95a fits into the chipped portion 857a of the inner peripheral plate portion 857 of the shade 8. This makes it possible to prevent the center cover 9 from rotating in the detaching direction. It also serves as a signal to notify the installer of the end of mounting due to the rotation work of the center cover 9. The uneven relationship between the convex portion 95a and the chipped portion 857a may be reversed.

The center cover 9 has a connecting portion 97 that is connected to a string body 99 (see FIG. 14) for preventing falling. As the string body 99, for example, a string, a wire, or the like is used, and as shown in FIG. 14, connecting tools 99a and 99b are attached to both ends. The connecting tool 99b is fixed by using a screw body 87A for fixing the hooking blade holding portion 25 and the shade 8, and the connecting tool 99a is fixed to the connecting portion 97 of the center cover 9 via a screw body 257c which is an example of the fixing tool. (See FIG. 15).
The center cover 9 is made of a resin material. Here, polycarbonate is used. The center cover 9 has a plating layer on its surface. This makes it possible to enhance the design.
As shown in FIG. 2, the center cover 9 is located closer to the installation surface than the front end (top 81a) of the translucent cover 6. In other words, the maximum distance from the installation surface of the shade 8 is longer than the maximum distance from the installation surface of the center cover 9. As a result, it is possible to prevent the light emitted from the LED module 3 from being blocked by the center cover 9.

Although the embodiment has been described above, the embodiment is not limited to this embodiment, and for example, the following modification may be used. Further, the embodiment, the modified example, and the modified example may be combined.
Further, even if there is an example not described in the embodiment or the modified example, or a design change within a range not deviating from the gist, it is included in the present invention.

<Modification example>
1. 1. Base member (1) Overall The base plate 21 of the base member 2 according to the embodiment is made of metal (steel). For example, if the power input to the LED element can be reduced to suppress the temperature rise of the LED element, the base plate can be suppressed. May be made of resin (in this case, all the base members are made of resin material). In this case, it becomes easy to secure the insulation property with the LED substrate 33 and the circuit board 43.
For example, an insulating resin material may be applied to the front surface and the back surface of the base plate 21 of the base member 2. For example, a reflective sheet may be arranged on the surface of the base plate 21, a reflective paint (white paint) may be applied, or a heat sheet having high thermal conductivity may be arranged. Moreover, you may use the white color steel plate.
In the embodiment, the base plate 21 and the hooking blade holding portion 25 are integrally molded (outsert molded product), but they are formed separately, and the hooking blade holding portion is attached to the base plate as a fixture such as a screw. It may be fixed by using.

(2) Base plate Although the base plate 21 of the embodiment is made of steel, another metal such as aluminum may be used for the furnace. The external shape of the base plate 21 is circular, but other shapes such as triangles, quadrangles (including squares and rectangles), hexagons, and other polygonal shapes, as well as elliptical and oval shapes may be used. ..
A fixing portion for fixing the translucent cover 6 is configured on the outer peripheral portion of the base plate 21 (the recessed portion 217 in the outer peripheral direction and the protruding portion 219 in the outer peripheral direction). However, the shape and fixing method of the fixing portion are not particularly limited. For example, with a rivet which is an example of a fixture, the outer peripheral portion of the base plate is formed to be flat, the fixed portion of the translucent cover to the outer peripheral portion of the base plate 21 is flattened, and the flat portions are brought into contact with each other. It may be fixed.

(3) Hooking blade holding portion The hooking blade holding portion 25 may have at least a hooking blade 281 on the bottom portion 257. For example, the tubular portion 253 may be a stepless tubular portion, may not have a protruding portion 257a that functions as a grip portion, or may have a locking mechanism 283 at another portion. For example, when the tubular portion 253 of the hooking blade holding portion 25 is a stepless tubular portion, it can be carried out by fixing the tubular portion 851 of the inner peripheral portion 85 of the shade 8 to the tubular portion of the hooking blade holding portion.
The cross-sectional shape of the tubular portion 253 may correspond to the center cover 9, and if the tubular portion of the center cover has a polygonal shape, the cross-sectional shape on the opening side of the tubular portion of the hooking blade holding portion may be polygonal. Good.
Although the tubular portion 253 of the hooking blade holding portion 25 is formed on the back side of the base plate 21, it may be formed so as to extend to the front side. However, considering the light distribution control of the light emitted from the LED element, it is preferable that the amount of extension from the base plate 21 is small.
The tubular portion 253 of the embodiment does not have a function of attaching / fixing the center cover 9, but the hooking blade holding portion 25 may have a function of attaching / fixing the center cover 9. In this case, for example, a structure similar to that of the inner peripheral portion 85 of the shade 8 can be provided by using the large-diameter tubular portion 253a and the step bottom portion 253c of the tubular portion 253 of the hooking blade holding portion 25. When the inner peripheral portion 85 of the shade 8 disappears and insects, dust, etc. invade, packing may be arranged between the inner peripheral portion of the shade and the cylinder portion of the hooking blade holding portion.

2. 2. The LED module 3 of the LED module embodiment has a trapezoidal shape when viewed from the front side, but may have another shape, for example, a "V" shape in which two trapezoids are combined. It may be arcuate, rectangular or square.
The LED module 3 of the embodiment has an annular shape (more accurately, a regular octagonal ring) as a whole, but for example, the LED module 3 may have a rectangular shape or a square shape as a whole.
Further, the LED substrate may be formed into an arc shape so as to have an annular shape as a whole.
Although the LED module 3 of the embodiment can be dimmed and toned, the emission color may be one type.
In addition, measures are taken to improve the light extraction efficiency of the LED module 3 by arranging a reflective sheet such as white on the exit surface (surface) of the LED module so that it does not overlap with the LED element 31 or the like, or by applying reflective coating. You may.

3. 3. The circuit board 43 of the power supply circuit unit embodiment has a wiring pattern on the front surface (the surface facing the base plate 21), but all the circuit components are mounted on the back surface of the circuit board having the wiring pattern on the back surface. Alternatively, circuit components may be mounted on the front and back surfaces of a circuit board having wiring patterns on both sides.
The circuit board 43 has a size that occupies a part of the back side of the base plate 21, but may have a size that occupies most of the back side, for example. The power supply circuit cover 5 does not have to have the communication portion 519 when the temperature rise of the circuit component and the periphery of the circuit component can be suppressed by dispersing and mounting the circuit component using a large circuit board.
The power supply circuit unit 4 of the embodiment has one circuit board 43, but may have, for example, a plurality of circuit boards. In this case, for example, circuit components for a dimming circuit or a voltage conversion circuit may be mounted on one circuit board, and circuit components for a toning circuit may be mounted on another circuit board.
Although the power supply circuit unit 4 of the embodiment is arranged on the back side of the base plate 21, it may be arranged on the front side. In this case, the power supply circuit cover 5 becomes unnecessary. Further, the power supply circuit unit may be mounted on the power supply circuit cover.
In the embodiment, the insulating sheet 49 is arranged between the metal base plate 21 and the insulating sheet. However, for example, the insulating sheet may be eliminated by applying an insulating paint to the back surface of the base plate. A strip-shaped spacer (made of an insulating resin material) may be interposed in order to increase the distance between the berth plate and the circuit board. Further, the surface of the circuit board 43 in contact with the base plate 21 may be coated with silicon.
The LED lighting device 1 of the embodiment includes a power supply circuit unit 4, but for example, electric power may be received from a power supply circuit unit arranged outside the device.

4. Power supply circuit cover The power supply circuit cover 5 of the embodiment has a communication portion 519 so as to straddle the tubular portion 511 and the bottom portion 513. For example, the tubular portion may be provided with a communication portion, or the tubular portion may be provided. A communication portion may be provided in an independent form between the portion and the bottom portion.
The tubular portion 511 of the power supply circuit cover 5 of the embodiment has a cylindrical shape, but may have a polygonal tubular shape such as a square tubular shape, or may have a dome shape without a tubular portion, for example. May be good.

5. Cover (translucent cover)
Although the cover 6 of the embodiment is composed of the frame 7 and the shade 8, it may be composed mainly of only the shard that covers the LED module 3. Further, the cover 6 may include the center cover 9.

Although the frame 7 uses a translucent resin having a light guide property, for example, it may be made of a translucent resin (polypropylene) like the shade 8. When the light guide property is changed, it can be adjusted by adjusting the thickness and shape of the frame 7 and the textured area. Further, the tubular portion 73, the inner ring portion 75, and the U-shaped ring portion 77 of the frame 7 are partially or completely textured so that the fitting portion 83b with the shade 8 cannot be seen from the front side. You can also do it. Further, the frame may be made of a material having no light guide property or light transmission property.
The frame 7 has an inner ring portion 75 and a U-shaped ring portion 77. For example, the frame 7 does not have the U-shaped ring portion 77, and the inner ring portion is fixed to the base plate. May be good. The frame 7 has a tubular portion 73, an inner ring portion 75, and a U-shaped ring portion 77, but has a configuration that does not have the inner ring portion 75 and the U-shaped ring portion 77, and has a tubular portion. The base plate may be fixed to the back end of the above. However, when a metal base plate is used, it is preferable to make the base plate smaller and the frame larger in consideration of weight reduction of the LED lighting device.

The shade 8 has an opening (6a) in the center, but may have a configuration without an opening. In this case, it becomes a little difficult to attach the hook blade to the attached portion, but the protective cover covering the LED module becomes unnecessary, and the light extraction efficiency can be improved. When the light extraction efficiency is increased, it can be adjusted by adjusting the thickness of the shade 8 and the amount of the diffusing agent mixed therein.
The position of the top portion 81a of the shade main body 81 of the shade 8 may be appropriately determined according to the light distribution characteristics of the number of tatami mats used in the LED lighting device 1.

6. Center cover The center cover 9 of the embodiment is detachably attached to the cover 6, but for example, the center cover may be made of a translucent resin and fixed to the cover. In this case, the center cover has transparency, and the hook blade can be easily attached to the attached portion. Further, the center cover may be provided with an illuminance sensor or a motion sensor to control the operation of the LED lighting device 1.

1 Lighting device 2 Base member 3 LED module 4 Power supply circuit unit 5 Power supply circuit cover 6 Cover (translucent cover)
21 Base plate 25 Hook blade holder

Claims (4)

In an LED lighting device used by attaching a hooking blade to a member to be mounted on the installation surface.
In a state before the hook blade is attached to the attached part material, a base member hooking blade holding portion for holding the hook blade is integral with the base plate,
With an LED module in which a plurality of LED elements are mounted on an LED substrate and mounted on the base plate.
A cover having an opening at a portion facing the hooking blade holding portion and covering the LED module is provided.
The cover constitutes a part of the appearance of the LED lighting device, and is fixed to the base member in a state of facing the LED module and having the hooking blade holding portion visible from the opening . The hooking blade holding portion has transparency and
The LED lighting device according to claim 1, wherein the opening of the cover is detachably closed by a center cover . A power supply circuit unit that supplies power to the LED module is mounted on the back surface of the base member .
The power supply circuit unit is covered with a bottomed tubular power supply circuit cover.
The power supply circuit cover is attached to the base member and
The LED lighting device according to claim 2 , wherein the LED module is positioned by a positioning portion of the power supply circuit cover . The LED lighting device according to claim 2 or 3 , wherein the maximum distance of the cover from the installation surface is longer than the maximum distance of the center cover from the installation surface .

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