JP2016021375A - Led luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED luminaire that is capable of preventing an LED substrate from being damaged.SOLUTION: An LED luminaire comprises: an LED substrate on which an LED element is mounted, a translucent cover for covering the light emitting direction of the LED element; a protective cover 26 positioned between the LED substrate and the translucent cover to cover the LED substrate. The protective cover 26 is made by combining a plurality of protective cover pieces having a circular arc shape in which the cross section thereof extending along the longitudinal direction of the LED substrate and perpendicular to the extension direction projects in the light emitting direction. Adjacent protective cover pieces are connected to each other with a connecting portion 26b where the ends in the extension direction are superposed. The distance between the top of the connecting portion 26 and the LED substrate is shorter than the distance between the top of other parts of the protective cover 26 except the connecting portion 26b and the LED substrate.SELECTED DRAWING: Figure 23

Description

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

  2. Description of the Related Art In recent years, due to an increase in environmental awareness, a self-powered light bulb type LED lamp using an LED element excellent in power saving as a light source has been widespread. Furthermore, recently, lighting devices using LED elements have been developed and introduced into the market for ceiling-mounted ceiling lights and hanging-type lighting fixtures that are suspended from the ceiling surface and illuminate the interior of the room.

Such a ceiling-mounted ceiling light is generally composed of an adapter for attaching a ceiling light to a ceiling wiring fixture that is a mounted portion, a lighting fixture body, and a shade (cover). An LED substrate on which the LED element is mounted, a lighting circuit board that supplies power for lighting the LED element, and a wiring member that electrically connects them are mounted.
This ceiling light is attached to the ceiling by first attaching the adapter to the ceiling wiring fixture, which is the mounting part, then attaching the lighting fixture body to this adapter, and finally attaching the shade. Has studied a ceiling light that can perform this installation work safely and easily.

Specifically, for example, in Patent Document 1, a plurality of light emitting modules and a circuit block (lighting circuit) for driving the light emitting modules on the lighting fixture main body, and between the circuit block and the light emitting modules or between each light emitting module are disclosed. A structure of a lighting fixture on which wiring components such as a connector for electrical connection are mounted is described.
However, in the lighting fixture described in Patent Document 1, since the light emitting module is mounted on the lighting fixture main body in an exposed state, the light emitting module may be damaged when the lighting fixture main body is attached to the adapter. is there.

JP 2013-38018 A

  The problem to be solved by the present invention is to provide an LED lighting device that can prevent damage to the LED substrate in view of the above-mentioned problems.

  The present invention provides an LED substrate on which an LED element is mounted, a translucent cover that covers a light emitting direction of the LED element, and a protection that covers the LED substrate between the LED substrate and the translucent cover. And a protective cover piece having an arc shape in which a cross-sectional shape extending along a longitudinal direction of the LED substrate and perpendicular to the extending direction extends in the light emitting direction. The adjacent protective cover pieces are connected in a state having a connecting portion in which the ends in the extending direction are overlapped, and the distance between the top of the connecting portion and the LED substrate is It is an LED illumination device characterized by being shorter than the distance of the top part of parts other than the connection part in the protective cover, and the LED board.

  According to the present invention, as described above, the LED substrate is covered from the light emission direction side by the protective cover and is not exposed on the base member, so that the LED substrate can be prevented from being damaged.

It is an external appearance perspective view of the LED lighting apparatus of 1st Embodiment. It is a vertical sectional view of the LED lighting device of the first embodiment. It is a disassembled perspective view of the LED lighting apparatus of 1st Embodiment. It is a front view of the state which removed the translucent cover of the LED lighting apparatus of 1st Embodiment. It is a rear view of the state which removed the translucent cover of the LED lighting apparatus of 1st Embodiment. It is a perspective view of the hook holding part used for a 1st embodiment. It is a rear surface perspective view of the hooking blade holding member used for a 1st embodiment. It is a front perspective view of the hook blade holding member used for a 1st embodiment. It is a perspective view of the hooking blade used for a 1st embodiment. (A) is a perspective view in the locked state of the lock member used for 1st Embodiment, (b) is a perspective view in the cancellation | release state of the lock member used for 1st Embodiment. It is a perspective view of the base member used for a 1st embodiment. It is a perspective view of the base member used for a 1st embodiment. It is a layout view of a lighting circuit board and an LED board used in the first embodiment. It is a top view of the lighting circuit board and LED board which are used for 1st Embodiment. It is a perspective view of the protective cover used for 1st Embodiment. It is sectional drawing of the protective cover used for 1st Embodiment. It is a perspective view of the back translucent cover used for 1st Embodiment. It is sectional drawing of the back translucent cover used for 1st Embodiment. It is a perspective view of the front translucent cover used for 1st Embodiment. It is sectional drawing of the front translucent cover used for 1st Embodiment. It is a disassembled perspective view of the protective cover used for 1st Embodiment. It is a perspective view which shows attachment of the protective cover used for 1st Embodiment. It is a perspective view of the LED lighting apparatus main body after the protective cover attachment used for 1st Embodiment. It is a perspective view which shows attachment of the translucent cover used for 1st Embodiment. It is a side view which shows attachment of the translucent cover used for 1st Embodiment. It is a perspective view of the protective cover piece used for 1st Embodiment. It is an external appearance perspective view of the LED lighting apparatus of 2nd Embodiment. It is a vertical sectional view of the LED lighting device of the second embodiment. It is a disassembled perspective view of the LED lighting apparatus of 2nd Embodiment. It is a front view of the state which removed the translucent cover of the LED lighting apparatus of 2nd Embodiment. It is a rear view of the state which removed the translucent cover of the LED lighting apparatus of 2nd Embodiment. It is a perspective view of the hook holding | maintenance part used for 2nd Embodiment. It is a rear surface perspective view of the hooking blade holding member used for 2nd Embodiment. It is a front perspective view of the hook blade holding member used for a 2nd embodiment. It is a perspective view of the hooking blade used for 2nd Embodiment. (A) is a perspective view in the locked state of the locking member used for 2nd Embodiment, (b) is a perspective view in the cancellation | release state of the locking member used for 2nd Embodiment. It is a perspective view of the base member used for 2nd Embodiment. It is a perspective view of the base member used for 2nd Embodiment. It is a layout view of the lighting circuit board and the LED board used in the second embodiment. It is a top view of the lighting circuit board and LED board which are used for 2nd Embodiment. It is a perspective view of the protective cover used for 2nd Embodiment. It is sectional drawing of the protective cover used for 2nd Embodiment. It is a perspective view of the back translucent cover used for 2nd Embodiment. It is sectional drawing of the back translucent cover used for 2nd Embodiment. It is a perspective view of the front translucent cover used for 2nd Embodiment. It is sectional drawing of the front translucent cover used for 2nd Embodiment. It is a disassembled perspective view of the protective cover used for 2nd Embodiment. It is a perspective view which shows attachment of the protective cover used for 2nd Embodiment. It is a perspective view of the LED lighting apparatus main body after the protective cover attachment used for 2nd Embodiment. It is a perspective view which shows attachment of the translucent cover used for 2nd Embodiment. It is a side view which shows attachment of the translucent cover used for 2nd Embodiment. It is a perspective view of the protective cover piece used for 2nd Embodiment.

<Overview>
The inventors are considering the use of a protective cover for improving the safety of the LED lighting device. The use of the protective cover has improved safety, but when the protective cover is configured by combining a plurality of protective cover pieces, a new shadow appears at the connecting part, which is the overlapping part of the ends of the protective cover pieces. There was a problem. It is another object of the present invention to provide an LED lighting device that improves safety and is less likely to cause a shadow on the connecting portion of the protective cover.
An LED lighting device according to an aspect of the present invention includes an LED board on which an LED element is mounted, a translucent cover that covers a light emission direction of the LED element, and a position between the LED board and the translucent cover. And a protective cover that covers the LED substrate, wherein the protective cover extends along the longitudinal direction of the LED substrate, and a cross-sectional shape perpendicular to the extending direction is stretched in the light emitting direction. Combining a plurality of protective cover pieces having an arcuate shape, adjacent protective cover pieces are connected in a state having a connecting part in which ends in the extending direction are overlapped, and the top part of the connecting part and the above The distance from the LED substrate is shorter than the distance between the top portion of the protective cover other than the connecting portion and the LED substrate.
In the LED lighting device according to another aspect, the connection portion of the protective cover is subjected to a diffusion process for diffusing light emitted from the LED element.
In the LED lighting device according to another aspect, the diffusion treatment is performed on at least one of the two ends constituting the overlapping portion.
In the LED lighting device according to another aspect, the diffusion treatment is performed on a surface of the one end facing the LED element.

<First Embodiment>
Hereinafter, a first embodiment will be described in detail with reference to the drawings. This embodiment is an example, and the present invention is not limited to this. Here, as an embodiment of the LED lighting device, a ceiling light having a hooking blade that can be attached to an existing rosette or a hooking ceiling body on the ceiling will be described as an example. In the following description, it is assumed that the ceiling light is attached to the ceiling for the sake of convenience, and the illumination light of the ceiling light is irradiated downward (on the floor surface side). However, the present invention is not limited to this.

(1. Configuration of ceiling light)
As shown in FIG. 1 to FIG. 3, the LED lighting device, here, the ceiling light 100 shown as an embodiment, emits light emitted from the LED lighting device body 1 and the LED elements 25 mounted on the LED lighting device body 1. It is comprised with the translucent cover 3 attached to the LED lighting apparatus main body 1 so that an output direction may be covered.

(2. Mounting the ceiling light to the ceiling)
This ceiling light 100 is an LED illumination that includes a hooking blade 12 that is electrically and mechanically connected to a wiring device 7 that is a mounted portion such as an existing rosette or hooking ceiling body on the ceiling surface 5 (FIG. 2). The apparatus main body 1 is detachably mounted by the hooking blade 12 and installed on the ceiling surface 5. Specifically, as shown in FIG. 1 to FIG. 3 and FIG. 15 to FIG. 20, the existing wiring fixture 7 on the ceiling surface 5 is provided at the center of the LED lighting device body 1 while supporting the LED lighting device body 1. The hooking blade 12 held by the hooking holding portion 10 is inserted, and in this state, the LED lighting device main body 1 is moved in the direction in which the wiring fixture 7 and the hooking blade 12 are engaged while pressing the LED lighting device main body 1 upward. Rotate.
Note that when the hooking blade 12 provided in the hook holding part 10 is inserted into the existing wiring device 7 on the ceiling surface 5, the details will be described later. However, since the hook holding part 10 is made of a transparent synthetic resin material, LED lighting is used. Since the position and orientation of the wiring fixture 7 can be seen through the hook holding portion 10 even from below the central portion of the device main body 1, it is easy to attach the LED lighting device main body 1 to the wiring fixture 7. It can be carried out.

  After the LED lighting device main body 1 is rotated and attached to the wiring fixture 7 in this way, the four post-translucent properties provided on the outer periphery of the protective cover 26 attached to the LED lighting device main body 1 are provided. The four protective cover fitting portions 31a provided on the outer periphery of the upper end of the rear translucent cover 31 are aligned and fitted to the cover fitting portion 26d, and the rear translucent cover 31 is attached. Further, the four front cover fitting portions 31b provided on the outer peripheral portion of the lower end of the rear translucent cover 31 and the four rear cover fitting portions provided on the outer peripheral portion of the upper end of the front transparent cover 32 are provided. When the front light-transmitting cover 32 is attached by aligning and fitting the 32a, the ceiling light 100 can be used.

When the ceiling light 100 is mounted on the ceiling surface 5, three ceiling springs 22 (mounted on the ceiling surface 5 side of the base member 21 of the LED lighting device main body 1 described later shown in FIGS. 1 and 2 ( The central part of FIG. 1) contacts three places on the ceiling surface 5. As shown in FIGS. 1 and 2, the ceiling spring 22 is an elongated plate, and is curved in an arc shape so that a central portion in the long side direction is convex in a natural state (a state where no load is applied). It is a plastic leaf spring. When the curved shape changes from the curved shape in the natural state upon receiving a load, a (repetitive) force is generated in a direction to return to the curved shape in the natural state.
The ceiling spring 22 is attached to the base member 21 in such a manner that one end of the long side is inserted into the base member 21 and fixed, and the other end is not fixed and is simply in contact with the ceiling surface side of the base member 21. ing. When the ceiling light 100 is mounted on the ceiling surface 5, the hooking blade 12 of the hook holding portion 10 is deformed while the ceiling spring 22 is deformed in a direction in which the curvature is reduced, that is, while the ceiling light 100 is pushed up toward the ceiling surface 5. Is inserted into the existing wiring device 7 on the ceiling surface 5.
After the ceiling light 100 is attached to the ceiling surface 5, the ceiling light 100 is almost the same as the ceiling surface 5 in a state in which the ceiling light 100 receives a force in a direction (downward) away from the ceiling surface 5 by the restoring force of the ceiling spring 22. Supported in parallel. The restoring force of the ceiling spring 22 also has a function of preventing displacement and vibration of the ceiling light 100 mounted on the ceiling surface 5.
Here, the ceiling spring 22 is a curved plastic leaf spring. However, in the state where the ceiling light 100 is attached to the ceiling surface 5, the force in the direction of separating the ceiling light 100 from the ceiling surface 5 is always applied. There is no particular limitation as long as it has a function to emit, and for example, an elastic body processed into a shape that elastically deforms metal or the like, or an elastic body made of an elastic material such as rubber can be used.

(3. Structure of the LED lighting device body)
As shown in FIGS. 2 and 3, the LED lighting device main body 1 includes a base member 21, a hook holding portion 10 that is fitted and fixed to the base member 21 and is integrated with the base member 21, and the base member 21. The LED board 24 on which the LED element 25 is mounted, the lighting circuit board 23 that supplies power for lighting the LED element 25, and the protective cover 26 that covers the lighting circuit board 23 and the LED board 24 It is composed of
Here, the hook holding part 10 includes a hooking blade 12 as shown in FIGS. 6 to 9, and the hooking blade 12 electrically and mechanically connects the ceiling light 100 to the existing wiring on the ceiling surface 5. It plays the role of connecting directly to the instrument 7. The hook holding portion 10 is fixed to the base member 21 from the opposite side (downward) of the ceiling surface 5 so as to block the base member opening 21 a formed at the center of the disc-shaped base member 21. It is installed on almost the same plane.
In the illustrated embodiment, a plurality of LED boards 24 and lighting circuit boards 23 are provided as shown in FIGS. 11 to 14, and the plurality of LED boards 24 are formed on the base member 21. The plurality of lighting circuit boards 23 on the holding portion 21d are peripheral portions of the base member 21 excluding the LED board holding portion 21d, specifically, on the outer peripheral side of the base member 21 with respect to the LED board holding portion 21d. It is directly fixed to a predetermined position on the back surface (lower surface) of the part-side rib 211b.
As shown in FIGS. 22 and 23, the protective cover 26 connects the LED board 24 and the lighting circuit board 23 fixed to the base member 21, the electrical wiring between the LED boards 24, and the lighting circuit board 23 and the LED board 24. Covering from below so that electrical wiring or the like is not exposed below the base member 21. The protective cover 26 is fixed to the lower surface of the base member 21 as shown in FIG.
The ceiling light 100 has a structure in which the hooking blade 12 is directly inserted and attached to the existing wiring device 7 on the ceiling surface 5 without using an adapter as an auxiliary device, and the protruding amount of the ceiling light 100 from the ceiling surface 5 Can be made smaller (thin).

(3-1 Base member)
The base member 21 of the LED lighting device main body 1 is made of, for example, a metal material such as a cold rolled steel plate (SPCC) having a thickness of 0.5 mm to 2.0 mm, punching, pressing, bending, or the like. Produced by. As shown in FIG. 11, the base member 21 has a disk shape. A circular base member opening 21a is formed in the central portion, and the hook holding portion 10 has a base member alignment portion 11g (FIG. 6) and a hook blade holding portion alignment portion 21g (see FIG. 6). 11) In a state of being fitted and positioned, the base member opening 21a is fixed so as to be closed, and the hooking blade 12 is installed at the center of the base member 21, and is adjacent to the hook holding portion 10 that holds the hooking blade 12. Thus, the LED substrate holding portion 21d is formed.
In addition, the hook holding | maintenance part 10 provided with the hook blade 12 is formed from a transparent synthetic resin material. For this reason, even after the base member opening 21 a is closed by the hook holding portion 10, in the work of attaching the LED lighting device main body 1 to the existing wiring fixture 7 on the ceiling surface 5, Since the position and orientation of the wiring device 7 can be visually recognized through the base member opening 21a from below, the installation work is simplified.
Here, the space formed by the base member opening 21a and the hook holding portion 10 fixed in the space are referred to as a transmission window 15 (FIG. 5). That is, in the illustrated embodiment, the hook holding unit 10 formed of a transparent material also serves as the transmission window 15.

  As shown in FIGS. 11 and 12, the disk-shaped base member 21 protrudes downward (the floor surface side when the ceiling light 100 is installed on the ceiling surface 5), and the LED substrate 24 is provided on the top surface thereof. A flat holding surface 211c for holding is formed, and an LED substrate holding portion 21d arranged in a substantially annular shape is formed. A base outer edge portion 21c is formed on the outermost peripheral portion of the base member 21 by bending the outer edge portion downward. A plurality of radial ribs 21 f are formed radially in the radial direction of the base member 21. The mechanical rigidity of the base member 21 is enhanced by the rib effect of the annular LED substrate holding portion 21d, the base outer edge portion 21c, and the radial rib 21f. Due to this rigidity enhancement, it is possible to reduce the thickness of the metal material constituting the base member 21, thereby realizing a reduction in the weight of the ceiling light 100, and the attachment work of the ceiling light 100 to the ceiling surface 5 is further enhanced by this reduction in weight. It becomes easy.

As shown in FIG. 11, the LED substrate holding portion 21d, which is a substantially annular lower protrusion and forms a holding surface 211c having a flat top surface on the lower side, is an imaginary center of the disk-shaped base member 21. The circular rings are divided into a plurality of (here, six sections) by radial ribs 21f formed radially at substantially equiangular intervals from each other (here, 60 °). The LED substrate 24 is fixed to each of the plurality of sections.
The lower surface (holding surface 211c) of the LED substrate holding portion 21d for fixing the LED substrate 24 is a flat surface as shown in FIG. 12, but is horizontal, ie, the base member 21 except the LED substrate holding portion 21d is excluded. It is not parallel to the flat surface which is the other part, but is formed with a predetermined inclination with respect to the flat surface which is the other part of the base member 21 excluding the LED substrate holding portion 21d.
In this case, as particularly shown in FIG. 12, the holding surface 211 c of the LED substrate holding portion 21 d is such that the distance of the holding surface 211 c from the flat plate surface of the base member 21 is larger than that of the outer peripheral side of the base member 21. It is formed to be inclined so that the center side is larger (that is, the side closer to the virtual center of the base member 21 is located below (floor side) than the side closer to the outer periphery of the base member 21). ing. For this reason, since the LED substrate 24 held on the holding surface 211c is inclined outward (to face the outer peripheral side of the base member), the irradiation angle of the light emitted from the LED element 25 is wide. Ensured and can irradiate light widely and uniformly.

If the inclination angle of the inclination of the holding surface 211c of the LED substrate holding part 21d is selected such that the irradiation angle of the light emitted from the LED element 25 can be ensured as wide as possible within the range where the central part of the ceiling light 100 does not become dark. The range of 5 ° to 20 ° with respect to the flat surface of the base member 21 is desirable.
Further, as shown in FIG. 12, the holding surface 211c of the LED substrate holding part 21d for fixing the LED substrate 24 is formed to protrude downward from the base member 21, and the base member 21 of the holding surface 211c is formed. The protruding height from the flat plate surface on the outer peripheral side is set to be higher than the surface position of the lighting circuit board 23. For this reason, the shadow by a circuit component is hard to come out and light can be radiate | emitted widely widely.
Here, the base member 21 has a disk shape, but is not necessarily limited to the disk shape, and may be a rectangular flat plate shape, for example.

As shown in FIGS. 11 and 12, a hooking blade holding fitting portion 21b for positioning and fixing the hooking holding portion 10 with the hooking blade holding portion positioning portion 21g is provided around the base opening 21a. It has been. The base member 21 has the LED substrate holding portion 21d and the fixing portion of the lighting circuit substrate 23 formed in advance by integral processing. By attaching the hook holding portion 10, the wiring fixture already installed on the ceiling surface 5 is provided. 7 is further provided with a hooking blade 12 that can be electrically and mechanically connected directly.
In addition, a hooking blade holding part fixing hole 21 h for fixing the hooking blade holding member 11, an LED board fixing hole 21 j for fixing the LED board 24, and the lighting circuit board 23 are fixed to the base member 21. A lighting circuit board fixing hole 21k for fixing, a protective cover fixing hole 21m for fixing the protective cover 26, and a ceiling spring fixing hole 21n for fixing the ceiling spring 22 are provided. These holes are used when an unillustrated screw or hook pin is inserted to fix a target element member such as the LED board 24 or the hook holding portion 10 to the base member 21.

(3-2 Configuration of hook holding unit)
As shown in FIG. 6, the hook holding unit 10 is incorporated into a hooking blade holding member 11 (FIG. 7) and a rotating portion 11 a having a substantially rectangular groove shape provided at the center of the hooking blade holding member 11. The hooking blade 12 functions as a pair, a lock member 13, and a power line 14. The ceiling light 100 is directly and electrically and mechanically connected to the wiring device 7 by the hooking blade 12 of the hook holding unit 10.

(3-3) Hook blade holding member
The hook blade holding member 11 is manufactured from a synthetic resin material having transparency and excellent in insulation and flame retardancy. As such a synthetic resin material, for example, polycarbonate (PC) can be used. In this case, specifically, the entire hook blade holding member 11 can be integrally formed from polycarbonate (PC). Thus, the hook holding part 10 provided with the hook blade holding member 11 made entirely of a transparent material is attached to the base member opening 21 a provided at the center of the base member 21 to form the transmission window 15. Accordingly, when the ceiling blade 12 provided in the hook holding portion 10 is inserted into the wiring device 7 already provided on the ceiling surface 5 and the ceiling light 100 is attached, the hook blade holding member 11 is made of a transparent synthetic resin material. Therefore, even from the lower side of the LED lighting device main body 1, the position of the wiring fixture 7 including the peripheral portion of the wiring fixture 7 is transmitted through the transmission window 15 at the center of the LED lighting device main body 1 and has a wide field of view without a blind spot. And the orientation of the installation. For this reason, the operation | work which attaches the LED lighting apparatus main body 1 to the wiring fixture 7 can be performed easily. As the synthetic resin material (the material after formation) for forming the transmission window 15, that is, the hooking blade holding member 11, a material having a light transmittance of 70% or more is preferable.
Although the transmission window 15 is translucent, there is no problem in the visibility of the wiring device 7, but it is desirable that the transmission window 15 be clearly visible if possible. This is because if the transmittance is small, it may be difficult to ensure sufficient visibility.

As shown in FIGS. 6 to 8, the hooking blade holding member 11 has a bottomed cylindrical shape having a double cylinder of an outer cylinder 11p and an inner cylinder 11r, and the rear surface (upper surface) side corresponding to the bottom side is an inner cylinder. The bottom surface protrudes further rearward (upward) from the bottom surface of the outer cylinder, forming a two-step bottom surface (FIG. 7) in which the central circular portion protrudes. The central circular portion on the rear surface side of the hooking blade holding member 11 has a substantially rectangular groove shape that is a space for mounting the hooking blade 12 for attaching the hooking blade holding member 11 to the wiring device 7 on the ceiling surface 5. A moving part 11a is formed. In the groove (inside) of the rotating part 11a, a hooking blade fixing groove 11c into which a screw for fixing the hooking blade 12 is inserted, and a hooking blade installation groove provided with irregularities for firmly fixing the hooking blade 12 are provided. 11d.
Further, on the outer peripheral portion on the rear surface (upper surface) side of the hooking blade holding member 11, a base member alignment portion 11 g used for positioning when the hooking blade holding member 11 is fixed to the base member 21, and fixed to the base member 21. The base member fitting part 11h used as the fixed surface at the time of doing is formed.
Further, from one end of the rotating portion 11a on the rear surface (upper surface) side of the hooking blade holding member 11, a power line 14 for supplying commercial power from the hooking blade 12 to the lighting circuit board 23 is accommodated toward the outer peripheral portion. A wiring groove 11e and a wiring fixing part 11f for fixing the power line 14 are formed.
Further, a lock member disposing portion 11m for receiving the lock member 13 is provided at one corner of the rotating portion 11a provided at the center portion on the rear surface (upper surface) side of the hooking blade holding member 11, from the lock opening portion 11b. The pressing portion 13d of the lock member 13 is exposed from the rotating portion 11a.

On the other hand, on the front surface (lower surface) side of the hooking blade holding member 11, as shown in FIG. 8, the LED lighting device main body 1 (FIG. 3) with respect to the wiring device 7 already installed on the ceiling surface 5 in the center. When the LED lighting device body 1 is manually rotated when attaching and detaching, a knob portion 11j protruding into a substantially rectangular parallelepiped shape that is convenient for use is formed. As shown in FIG. 8, the knob portion 11j has a shape in which both wall surfaces on the long side are slightly concaved so that it can be easily pinched and rotated with a finger. Furthermore, unevenness as anti-slip is formed on both the wall surfaces.
A protective cover fixing groove 11o for fixing the inner peripheral portion of the protective cover 26 and a base member fixing groove 11n for fixing to the base member 21 are provided at the peripheral portion on the front surface (lower surface) side of the hooking blade holding member 11. Is formed.
Here, the knob portion 11j has an internal space that opens to the rear surface side of the hooking blade holding member 11, and this space is also used as the rotating portion 11a described above.

  Since the hooking blade holding member 11 is formed of an insulating material such as polycarbonate (PC) as described above, the hooking blade 12 is directly attached to the hooking blade holding member 11 and the hooking blade 12 is attached. Even if the ceiling light 100 is connected to the energized wiring device 7, there is no risk of an electrical short circuit with a metal member, for example, the base member 21 and the like. be able to. In addition, by forming the hook blade holding member 11 from an insulating material such as polycarbonate in this manner, insulation measures are not required, and weight reduction and transparency can be promoted.

  In addition, the material used for manufacture of the hooking blade holding member 11 is not necessarily limited to polycarbonate, but has rigidity necessary for the hooking blade holding member 11 in addition to transparency, insulation, and flame retardancy. Any other material may be used. For example, an insulative material such as flame retardant polybutylene terephthalate (PBT) may be used. Here, the entire hooking blade holding member 11 is integrally formed of an insulating material, but at least a portion of the hooking blade holding member 11 that contacts the hooking blade 12 or a portion that faces the hooking blade 12 is used. It may be formed from an insulating material, and only a part of the hooking blade holding member 11 is formed of an insulating material, or the hooking blade holding member 11 made of a metal material is covered with an insulating material. You can also.

(3-4 Hook blade)
As illustrated in FIG. 9, the hooking blade 12 is manufactured by punching, pressing, bending, or the like using a conductive metal material such as brass. As shown in FIG. 6, the hooking blade holding member 11 is provided with a pair of hooking blades 12, each having a concave hooking blade installation groove provided in the rotating portion 11 a of the hooking blade holding member 11. 11d (FIG. 7), and is fixed by a screw that is inserted from the blade fixing hole 12b and screwed into the hooking blade fixing groove 11c, and the front end of the hooking portion 12a is the rear surface side of the hooking blade holding member 11, that is, It protrudes to the wiring device 7 side of the mounted portion of the ceiling surface 5.
More specifically, as shown in FIGS. 1 to 6, the pair of hooking blades 12 has a hooking blade holding member such that a substantially L-shaped hooking portion 12 a stands on the upper side of the hooking blade holding member 11. The blade fixing portion 12c and the blade terminal fixing portion 12d are aligned with the hooking blade installation groove 11d of 11, and fixed to the hooking blade holding member 11 with screws. Since a large force is applied to the hooking blade 12 in the lateral direction (rotation direction) when inserted into the wiring device 7 and rotated, the hooking blade installation groove 11d is provided to fix the hooking blade 12. The power line 14 is inserted into the blade terminal hole 12e of the hooking blade 12, and is fixed by solder. As a result, the external power from the wiring device 7 and the lighting circuit board 23 are electrically connected via the hooking blade 12.

  The hooking blade 12 has the same standard as the hooking blade of the adapter used when the general ceiling light 100 is attached to the ceiling surface 5. Therefore, the LED lighting device main body 1 is directly and electrically connected to the wiring fixture 7 that is the attachment portion by the hooking blade 12 provided on the hooking blade holding member 11 without using a relay device such as an adapter for the wiring fixture 7. And mechanically connectable. Moreover, the hooking blade 12 is provided with a locking mechanism for fixing, which will be described later, and the LED lighting device main body 1 is pressed and locked by the hooking blade 12 by inserting the hooking blade 12 into the wiring device 7 and turning it. It is fixed by the mechanism.

(3-5 Lock member)
The locking member 13 is a hooking blade for preventing the hooking blade 12 from being detached from the wiring device 7 in a state where the LED lighting device body 1 is mounted on the wiring device 7 on the ceiling surface 5 and used as the ceiling light 100. With the lock function. Specifically, as shown in FIG. 6, the lock member 13 is housed in the root portion of the hooking blade 12 in the rotating portion 11 a of the hooking blade holding member 11. After the tip of the hooking blade 12 is inserted into an arcuate groove (not shown) provided on the wiring fixture 7 such as the ceiling surface 5, the LED lighting device main body 1 is fixed to the wiring fixture 7 by being rotated. When this is done, the fixing claw 13a (FIG. 10) enters the arc-shaped groove provided in the wiring device 7 and rotates in the direction in which the hooking blade 12 is detached from the wiring device 7, that is, the rotation opposite to that at the time of fixing. To prevent movement. As shown in FIG. 10, the lock member 13 is made of a resin having elastic characteristics such as a substantially N-shaped polyacetal (POM). FIG. 10 shows an operation state of the lock member 13, and FIG. 10 (a) shows a state in which the fixing claw 13a protrudes upward in a normal shape. In the state where the LED lighting device main body 1 is attached to the wiring device 7, the fixing claw 13 a maintains the state of FIG. 10A in the arc-shaped groove provided in the wiring device 7. Therefore, in a state where the LED lighting device body 1 is fixed to the wiring fixture 7, the arcuate groove provided in the wiring fixture 7 has a hooking portion 12 a of the hooking blade 12 at one end and the lock member 13 at the other end. Thus, the hooking blade 12 cannot be rotated with respect to the wiring device 7.
On the other hand, FIG. 10B shows a state in which the pressing portion 13d of the lock member 13 is pressed and the fixed claw 13a is retracted downward. When removing the LED lighting device main body 1 from the wiring fixture 7, the pressing portion 13d is pushed, the fixing claw 13a is retracted, that is, the fixing claw 13a is removed from the arc-shaped groove provided in the wiring fixture 7, and the hooking blade Remove in a pivotable state.

The movement of the lock member 13 when the pressing portion 13d is pressed will be described in more detail. When the pressing portion 13d is pressed to release the lock mechanism, the semi-cylindrical base protrusion 13f provided at the lower portion of the lock base portion 13e slides on the inner lower portion of the rotating portion 11a, and the spring portion 13g is pressed. It is. When the spring part 13g is pushed, the spring part 13g rises (the inclination of 13g inclined in side view approaches vertical), and the semi-cylindrical fixed protrusion 13c provided on the side surface of the fixed base part 13b rotates. The inner side portion of the moving portion 11a is slid downward, and the fixed claw 13a is retracted downward.
Here, since the semi-cylindrical protrusions such as the base protrusion 13f and the fixed protrusion 13c are provided in the movable part, the fixing claw 13a can be smoothly inserted and removed from the arc-shaped groove provided in the wiring device 7. It has a structure.

  The pressing portion 13d of the locking member 13 is a lock opening 11d of the rotating portion 11a in a state where the locking member 13 is housed in the root portion of the hooking blade 12 in the rotating portion 11a of the hooking blade holding member 11. Is exposed. When removing the LED lighting device main body 1 from the ceiling surface 5, it is necessary to release the lock of the hooking blade 12 by pressing the pressing portion 13d of the locking member 13, but the pressing portion 13d is transparent like the rotating portion 11a. And this push part 13d is hard to visually recognize. Therefore, the lock member 13 is colored in a color that is easily visually recognized with respect to the transparent body, for example, orange with low transparency.

(3.-6 Arrangement of LED board and lighting circuit board)
The LED circuit board 24 on which the LED elements 25 are mounted and the lighting circuit board 23 for lighting the LED elements 25 are obtained when the LED lighting device body 1 of the base member 21 is attached to the ceiling surface 5 as shown in FIG. It is arranged on the floor side. The LED board 24 is disposed on the LED board holding part 21 d of the base member 21 adjacent to the outside of the hooking blade holding member 11. The lighting circuit board 23 is arranged on the peripheral edge side rib 211b of the base member 21, and is arranged from the LED board holding part 21d and thus the LED board 24 so as not to overlap the LED board 24, that is, the LED board holding part 21d. Is also provided on the outer peripheral side of the base member 21. Thereby, since the LED board 24 is disposed near the center of the base member 21, illumination with uniform brightness can be obtained without darkening the center. In addition, the lighting circuit board 23 can be divided into a plurality of boards, and the ceiling light 100 can be made compact to reduce the cost.

(3.-7 LED board)
As shown in FIGS. 2, 3, 13, and 14, the LED board 24 is disposed so that six arc-shaped boards having a predetermined width dimension are connected by the board connecting lines. Are formed in a substantially circle shape, and are arranged on the LED substrate holding portion 21 d of the base member 21. This LED board 24 consists of a glass composite board (CEM-3) wired on one side, and the LED element 25 is mounted on one side. By using the substrate divided in this way, thermal contraction can be absorbed by the divided portion of the substrate and deformation of the substrate can be suppressed. Further, as shown in FIG. 14, the wiring between the LED substrates 24 is performed by providing a connector 24a on one LED substrate 24 and connecting a lead wire 24b to the other LED substrate 24 with solder. ing. That is, the plurality of LED boards 24 are connected to each other by a lead wire 24b whose one end is connected to one LED board 24 and a connector 24a which is installed on the other LED board 24 and connected to the other end of the lead wire 24b. ing. Thereby, it is possible to easily connect the LED substrates 24 at the time of assembly, to reduce the number of assembly steps and the number of parts, and to realize cost reduction. In addition, the board | substrate wiring for connecting with the lighting circuit board 23 also has the same connection structure. Moreover, the connection of these LED boards 24 is connected in the outer peripheral side of the LED lighting apparatus main body 1 among the LED boards 24, as shown in FIG.13 and FIG.14. For this reason, the wiring for connecting the LED substrates 24 can emit light widely and uniformly without hindering light emission from the LED element 25.

  In the illustrated embodiment, as shown in FIG. 14, the LED substrate 24 has LED elements 25 arranged in a straight line. However, the number and arrangement of the LED elements 25 are not particularly limited, and the LED elements 25 may be arranged to form a staggered relationship instead of a linear shape. The LED substrate 24 is disposed on the LED substrate holding portion 21d provided so that the center portion is inclined toward the floor surface when the LED lighting device body 1 is attached to the ceiling surface 5. Thereby, the LED substrate 24 constitutes a substrate with which the translucent cover 3 has uniform brightness, and is fixed to the base member 21 with a synthetic resin pin or the like. The back surface of the LED substrate 24 on which the LED elements 25 are not mounted is directly fixed and thermally coupled to the LED substrate holding portion 21d of the base member 21 so that heat generated from the LED substrate 24 is dissipated by the base member 21. It becomes possible to do. Thereby, the luminous efficiency of the LED element 25 can also be increased. In addition, the light extraction efficiency can be further improved by pasting a highly reflective sheet on the LED element mounting surface side of the LED substrate 24 or applying a highly reflective resin.

(3.-8 LED element)
As the LED element 25 mounted on the LED substrate 24, various known LED elements can be used. In the present embodiment, a ceiling light 100 that can be toned using a high-luminance LED element that emits white light for illumination and a high-luminance LED element that emits daylight color is used.

(3.-9 Lighting circuit board)
2, 3, 13, and 14, the lighting circuit board 23 converts the alternating current supplied from the wiring device 7 through the hooking blade holding member 11 into direct current and supplies the direct current to the LED board 24. In order to do this, an arc shape is disposed around the LED substrate 24 on the front side of the peripheral edge rib 211b of the base member 21. As shown in FIG. 14, the lighting circuit board 23 is composed of a paper phenol board (FR-1) in which circuit components 23a and 23b are wired on one side. By disposing the back surface of the lighting circuit board 23 on which the circuit components 23a and 23b are not mounted on the front surface side of the base member 21 via an insulating sheet, heat generated from the lighting circuit board 23 is transferred to the base member 21. Efficiently dissipates heat. As the circuit components 23a and 23b constituting the lighting circuit board 23, various diodes, capacitors, transformers, ICs, resistors and the like for performing overcurrent protection, noise cut, rectification, smoothing, dimming control and the like are known. The electronic parts can be used.

  The lighting circuit board 23 is connected to the power line 14 from the wiring groove 11e of the hooking blade holding member 11. In this case, the power line 14 is connected to the LED board 24 as shown in FIGS. The LED element 25 arranged in a substantially annular shape is wired so as to straddle a portion where it is not mounted. In this case, as shown in FIG. 13 and FIG. 14, the wiring is installed across the LED substrate 24 on the surface of the LED substrate 24 opposite to the mounting surface on which the LED element 25 is mounted. . As a result, even if the lighting circuit board 23 is provided outside the LED board 24, it is possible to irradiate widely and uniformly without disturbing light emission from the LED element 25 by the wiring for supplying power. Natural shadows do not occur.

  In this case, particularly, as shown in FIG. 13, the wiring can be installed along the strength reinforcing rib 21 f provided on the base member 21. Specifically, as shown in FIG. 13, the power line 14 is installed along the radial rib 21 f of the base member 21, thereby straddling the surface of the LED substrate 24 where the LED element 25 is not mounted. be able to. Thereby, the wiring between the hook blade holding member 11 and the lighting circuit board 23 can be wired by using the rib 21f for reinforcing the strength such as a concave shape provided in the base member 21 as a wiring storage portion. Wiring can be performed stably and appropriately without newly providing a wiring member, and cost reduction can be realized.

  The DC supply from the lighting circuit board 23 to the LED element 25 is performed by fixing the connector 23c to the lighting circuit board 23 and soldering the lead wire 23d connected to the connector 23c to the LED board 24 as shown in FIG. The lighting circuit board 23 and the LED board 24 are electrically connected by connecting with each other. At this time, as shown in FIG. 13, the lead wire 23 d is connected to the center side of the LED substrate 24 through the back surface of the LED substrate 24 on the LED element 25 mounting side using the radial rib 21 f. This prevents the light emitted from the LED element 25 from being reflected on the translucent cover 3 without hitting the lead wire 23d. Therefore, connection with the LED substrate 24 at the time of assembly can be facilitated, and the number of parts can be reduced. However, the board connection between the lighting circuit board 23 and the LED board 24 is not limited to this form. For example, the inner circuit side of the lighting circuit board 23 and the LED board 24 of the LED lighting device main body 1 may be used. The outer peripheral side can also be connected without straddling the LED substrate 24.

The arrangement of the circuit components 23 a and 23 b on the lighting circuit board 23 is such that a short circuit component 23 a is arranged on the center side of the lighting circuit board 23 and a tall circuit component 23 b is arranged outside the lighting circuit board 23. Yes. As a result, the height of the circuit component 23b is higher than the height of the circuit component 23a.
Further, the height of the circuit components 23a and 23b is a 1/2 beam angle of light emitted from the LED element 25 (indicating the spread of light (light distribution) and 1/2 of the illuminance (maximum luminous intensity) directly below the light source). Therefore, the circuit components 23a and 23b must be arranged so as not to be irradiated with the emitted light of an illuminance point and an angle formed by a line connecting the light source center and a vertical direction line of the light source center. As a result, the translucent cover 3 has no shadow and uniform brightness.

In addition, it is possible to further improve the light extraction efficiency and prevent the generation of shadows by pasting a highly reflective sheet on the circuit component mounting surface side of the lighting circuit board 23 or applying a highly reflective resin. .
Further, the lighting circuit board 23 can be divided into a plurality of boards, and the ceiling light 100 can be further downsized to reduce the cost. As the division of the lighting circuit board 23 at this time, it is possible to divide the input circuit unit and the output circuit unit, or to divide the lighting circuit board 23 so that the dimming circuit and the toning circuit can be selected depending on the models to be mounted.
Further, as shown in FIGS. 22 and 23, since the entire lighting circuit board 23 is protected by the protective cover 26, the cover provided on the normal lighting circuit board 23 can be omitted, and the number of parts can be reduced. Cost can be reduced.

(3.-10 Protective cover)
The protective cover 26 is attached to the base member 21. The protective cover 26 is made of a flame-retardant synthetic resin material having transparency such as polycarbonate (PP), and its shape is continuous in a donut shape as shown in FIGS. 2 to 4, 15, and 16. When the ring of the hollow pipe is cut along a virtual plane that bisects an ellipse when the donut is viewed from the side (when viewed from a direction orthogonal to the central axis of the hollow portion of the donut). It is similar to the shape of the lower half (that is, the longitudinal section has a substantially half-pipe shape), and the cut surface side is a fixed side to the base member 21 (FIG. 3). When the ring-shaped protective cover 26 is viewed from the side, the cross-section of the protective cover 26 when cut along a virtual vertical plane including the virtual center of the ring has a downwardly convex arc as shown in FIGS. It becomes a shape which is spaced apart and juxtaposed. When the protective cover 26 is mounted on the base member 21, the inner space of the ring-shaped half pipe whose upper surface is opened is mounted on the base member 21 inside the above-described downward convex arc, that is, in an actual three-dimensional structure. Both the lighting circuit board 23 and the LED board 24 are covered together from below, and the light emission direction side surfaces of the lighting circuit board 23 and the LED board 24 are covered. Accordingly, both the lighting circuit board 23 and the LED board 24 can be covered without being exposed from the light emitting direction side of the LED element 25, and at the same time, separate covers are prepared for the lighting circuit board 23 and the LED board 24. Since there is no need to cover each of them, the increase in the number of parts is suppressed, and the structure is highly effective in reducing the cost.

  As shown in FIG. 21, the protective cover 26 is composed of two protective cover pieces (FIG. 21) having a circular arc shape obtained by further dividing the above-mentioned ring-shaped half pipe into two equal parts. The protective cover pieces are combined to form an integral protective cover 26 arranged in a ring shape. These two protective cover pieces are substantially the same in material, external shape, and appearance, and there is no possibility that confusion of parts and wrong mounting direction will occur, such as the right and left members being mistaken. As shown in FIG. 22, the two protective cover pieces are each attached to the base member 21 and connected by a protective cover connecting portion 26b. The base member 21 may be attached to the base member 21 one by one (FIG. 22), and operations such as alignment are easy. In addition, the protective cover connection part 26b is corresponded to the edge part of the circumferential direction of each protective cover piece. Further, a portion where the protective cover connecting portions 26b of the protective cover pieces are connected to each other is referred to as a connecting portion, and “26b” is also used as the reference numeral of the connecting portion when the protective covers are combined.

  As shown in FIGS. 15 and 26, the protective cover 26 arranged in a ring shape has the LED substrate 24 side of the protective cover 26 as a boundary when mounted on the ceiling light 100 (LED lighting device). A communication portion is provided for communicating the space with the space on the translucent cover 3 side and cooling the LED element 25 using an air flow. In the illustrated embodiment, as shown in FIGS. 15 and 26, the communication portion is formed at one or more through holes formed along the inner peripheral edge of the protective cover 26 at the inner peripheral edge of the protective cover 26. 26k and one or more notches 26m formed along the outer peripheral edge of the protective cover at the outer peripheral edge of the protective cover 26.

  Specifically, as shown in FIGS. 15 and 26, the through-holes 26k include a plurality of (specifically, eight in the illustrated embodiment, as shown in FIG. 15) through-holes 26k. Are arranged in an annular shape with an interval of. Each of the through holes 26k has a substantially rectangular shape (more strictly, along the inner peripheral edge of the protective cover 26) along the inner peripheral edge of the protective cover 26 arranged in a ring shape when viewed from the light exit surface side. A part of the protective cover 26 is penetrated so as to open in a slightly curved arc shape. Therefore, air can convect between the space on the LED substrate 24 side and the space on the translucent cover 3 side with the protective cover 26 as a boundary.

  On the other hand, as shown in FIGS. 15 and 26, the notch 26 m is specifically a plurality of notches 26 m (specifically, 12 in the illustrated embodiment), which are part of the outer peripheral edge of the protective cover 26. By cutting out the parts, they are arranged at a predetermined interval. Each of these cutouts 26m opens in a substantially rectangular shape when viewed from the side of the ceiling light 100, and is between the space on the LED board 24 side and the space on the translucent cover 3 side with the protective cover 26 as a boundary. Air can be convected. The plurality of cutouts 26m do not necessarily have to be installed at equal intervals, and all the cutouts 26m having the same size and shape need not be installed, and the protective cover 26 can be attached to the base member 21. The arrangement and size can be set in consideration. In addition, although the communication part formed in the outer peripheral part of the protective cover 26 was set as the notch 26m in the illustrated embodiment, it is not necessarily limited to the communication part formed by cutting the outer peripheral part. Similarly to the inner peripheral edge side of the protective cover 26, a through hole formed in a hole shape may be used.

By forming these communication portions, when the LED element 25 on the LED substrate 24 mounted on the base member 21 emits light and generates heat, the temperature of the air inside the protective cover 26 rises, for example, the inner periphery It flows out to the outer space of the protective cover 26 from the through-hole 26k which is a communication part provided in the part. Instead, the low-temperature air in the outer space of the protective cover 26 flows from the notch 26m, which is a communication portion provided at the outer peripheral edge. As a result, the air that has risen in temperature and has flowed into the outer space of the protective cover 26 is cooled via the translucent cover 3 and the base member 21, and again from the outer peripheral edge of the protective cover 26 through the notch 26 m. Return to the inner space. The LED element 25 is efficiently cooled by the airflow that smoothly circulates between the inner space and the outer space of the protective cover 26, and deterioration of the operating life can be suppressed.
As described above, the through hole 26k formed in the inner peripheral edge of the protective cover 26 and the notch 26m formed in the outer peripheral edge bear a cooling function (heat dissipation) for cooling the LED element 25. Can do.

  In addition, each through-hole 26k and each notch 26m which are these communicating parts have the magnitude | size and shape which cannot let a finger penetrate. Specifically, in each of the through holes 26k and the notches 26m that open in a substantially rectangular shape in the illustrated embodiment, the length of the rectangular short side (the width in the transverse direction of the hole or the height of the notch) is set. It is set to 4 mm (the length of the long side of the rectangular shape is not particularly limited unless a finger enters). This is because if the length of the short side is too large, when the LED lighting device body 1 is detached from the ceiling surface 5, the operator's fingers may enter the opening and come into contact with the LED element 25, the lead wire 24b, or the like. Because there is. Therefore, it is desirable that the length of the rectangular short side of each through-hole 26k and each notch 26m opened in a substantially rectangular shape does not exceed 12 mm at the maximum.

The through holes 26k are formed along the inner peripheral edge of the protective cover 26. However, as shown in FIG. 15, the openings of the through holes 26k are emitted from all the LED elements 25 covered by the protective cover 26. The shadow of the through hole 26k is prevented from being reflected on the translucent cover 3 by arranging it so that it is located closer to the base member 21 side (ceiling surface 5 side) than the emitted light having a 1/2 beam angle of the light to be transmitted. can do.
Similarly, the opening of the notch 26m formed along the outer peripheral edge portion of the protective cover 26 is also more than the emitted light of 1/2 beam angle of the light emitted from the LED element 25, as shown in FIG. By arranging so that it may be located in the base member 21 side (ceiling surface 5 side), the situation where the shadow of the notch 26m is reflected in the translucent cover 3 can be prevented.

  In the illustrated embodiment, the through hole 26k has a substantially rectangular opening and is formed at a total of eight locations, but is positioned closer to the base member 21 than the 1/2 beam angle described above, and There are no particular restrictions on the shape, arrangement, and number of arrangements as long as the size and shape of the finger cannot be penetrated. For example, a circular shape (including both a perfect circle and an ellipse), a triangle, etc. A large number of through holes 26k having polygonal openings can be arranged in a line along the inner periphery. Similarly, if the notch 26m also satisfies the conditions that it is positioned closer to the base member 21 than the 1/2 beam angle described above and has a size and shape that cannot penetrate the finger, the shape, There is no restriction on the arrangement. If the protective cover 26 is fixed to the base member 21 and the mechanical strength of the protective cover 26 is within a range that can be sufficiently secured, one or more through holes 26k that are formed as long as the above conditions are satisfied. In addition, the larger the total area of the openings of the one or more notches 26m formed, the lower the fluid resistance against the air flow described above, and the cooling effect of the LED element 25 is improved.

  In the two protective cover pieces, the arc-shaped connecting portion by the protective cover connecting portion 26b is not merely abutting, and the end portion of one of the two protective cover pieces has the thickness of the protective cover 26. The substantially upper half is cut, and the end of the other protective cover piece that engages the one end of the substantially upper half is cut into a shape in which the substantially lower half of the plate thickness of the protective cover 26 is cut (so-called The protective cover connecting portion 26b is formed by these end portions. Therefore, the connecting portion that connects the arc-shaped end portions of the two members so as to face each other in the ring shape is such that the upper half cut and the lower half cut end face each other. The two members are smoothly connected while maintaining substantially the same thickness as the portion other than the protective cover connecting portion 26b.

As shown in FIG. 15, a protective cover opening 26a is provided at the center of the protective cover 26 connecting the two members in plan view. At the edge of the protective cover opening 26a, a pipe-shaped hook holding and fixing guide 26j extends in a direction (upward) to be attached to the base member 21. As shown in FIG. 15, the hook holding and fixing guide 26j is provided with U-shaped grooves at two opposing positions with respect to the center of the pipe. One is a power line wiring groove 26g serving as a recess through which electrical wiring to the lighting circuit board 23 is passed, and the protective cover position pin 11s (FIG. 8) of the hooking blade holding member 11 is fitted into the other groove. The two groove shapes are homologous, and there is no distinction between which one is the power line wiring groove 26g serving as a recess through which the electric wiring to the lighting circuit board 23 is passed.
When the protective cover 26 is attached to the base member 21 to which the hooking blade holding member 11 is attached, protection is performed so that the inner cylinder 11r (FIG. 8) of the hooking blade holding member 11 is inserted inside the hooking holding fixing guide 26j. The cover 26 and the base member 21 are aligned, then the protective cover 26 is rotated, and the wiring groove 11e of the hooking blade holding member 11 (FIG. 8) is inserted into the U-shaped groove of the hooking holding and fixing guide 26j. ), Or when the protective cover position pin 11s is fitted, the protective cover 26 can be aligned with the correct fixing position of the base member 21.
The power line wiring groove 26g serving as a recess through which the electrical wiring to the lighting circuit board 23 passes is U-shaped for passing the power line 14 that sends power from the hooking blade holding member 11 to the lighting circuit board 23, as shown in FIG. It is formed as a groove.

An annular hooking blade fixing portion 26h (FIG. 15) is provided outside the hooking holding and fixing guide 26j. After confirming that the protective cover 26 is aligned with the correct fixing position of the base member 21 by the above-described procedure, the protective cover 26 is attached to the base member 21 by a hook fixing hole 26e provided in the hooking blade fixing portion 26h. It is fixed with screws. The upper end of the protective cover outer edge portion 26c (FIG. 16) of the protective cover 26 has a flat ring shape except for the notch 26m, and is a base member fixing hole 26f provided in a total of eight locations. It is being fixed to the surface of the peripheral part side rib 211b of the base member 21 with the screw | thread.
As shown in FIG. 23, the protective cover 26 covers the LED board 24 and the lighting circuit board 23 so that they are not exposed outside the protective cover 26, and when the LED lighting device body 1 is attached to the wiring fixture 7, The electrical safety of the installation worker can be achieved, and the situation where the installation operator touches the LED element 25 or the like to deteriorate the lighting performance can be avoided.

  The translucent cover 3 is attached to the protective cover 26. Specifically, as can be seen from FIG. 21, the rear translucent cover 31 (FIG. 17) for fitting the translucent cover 3 at four locations on the outer periphery of the protective cover 26 is fixed. A rear translucent cover fitting portion 26d (FIG. 21) is provided. When the rear translucent cover 31 is attached to the protective cover 26, the rear translucent cover fitting portion 26d and the protective cover fitting portion 31a are aligned and rotated, thereby rotating the rear translucent cover fitting portion. 26d and the protective cover fitting part 31a can be fitted.

In this case, the protective cover 26 has a cover guide portion that slides the translucent cover 3 and guides it to a predetermined position. In the illustrated embodiment, specifically, the cover guide portion is formed on the side surface of the outer peripheral portion of the surface of the protective cover 26 on the side where the light emitted from the LED element 25 is emitted, as shown in FIG. It consists of a substantially convex curved surface. More specifically, as shown in FIG. 25, the outer peripheral side surface of the protective cover 26 is arcuate as described above from the lower end toward the base member 21 (upward) when viewed from the side. Has spread. The actual protective cover 26 is ring-shaped (FIG. 24), and the ring diameter at the lower end thereof is smaller than the diameter of the rear translucent cover opening 31c where there is no protective cover fitting portion 31a. Therefore, when the rear translucent cover 31 is attached to the protective cover 26, as shown in FIGS. 24 and 25, the rear translucent cover 31 is inserted into the rear translucent cover opening 31c. The cover 31 may be moved from the lower side of the protective cover 26 toward the upper side. At this time, even if the protective cover 26 and the rear translucent cover 31 are displaced in the horizontal direction, once the lower end of the protective cover is in the rear translucent cover opening 31c, the protective cover is protected as described above. Since the outer peripheral side surface of the cover 26 is formed in a substantially convex curved surface, the rear translucent cover opening 31c is then moved to the outer peripheral side surface of the protective cover 26 by moving the rear translucent cover 31 upward. It moves in the horizontal direction while sliding along the arcuate curved surface. Eventually, the horizontal direction is aligned with a predetermined correct position in a self-alignment manner. After the protective cover fitting portion 31a of the rear translucent cover 31 reaches a position where it comes into contact with the rear translucent cover fitting portion 26d, the rear translucent cover 31 is rotated to fit the rear translucent cover. When the mating portion 26d and the protective cover fitting portion 31a are fitted, the attaching operation of the rear translucent cover 31 to the protective cover 26 is completed.
Here, since the outer peripheral side surface of the protective cover 26 is a curved surface that protrudes downward, the translucent cover 31 is self-moved while sliding the rear translucent cover opening 31c along the curved surface. An alignment function assisting function that guides to the fitting position of the protective cover 26 is achieved. For this reason, the rear translucent cover 31 is appropriately attached to the protective cover 26 while being easily positioned without requiring the work of precisely matching the horizontal position with respect to the LED lighting device body 1 from the beginning. Can do.

The protective cover 26 has a diffusion processing unit that diffuses the light emitted from the LED element 25. The diffusion processing unit is implemented by, for example, a surface treatment described later. The protective cover 26 is subjected to a surface treatment for diffusing light on the outer surface side of the outer peripheral portion thereof. More specifically, as described above, the protective cover 26 has a shape similar to that of a ring-shaped half pipe having an upper surface opened (FIG. 16). The region surrounded by the line is subjected to graining having light diffusibility. Here, the above-mentioned predetermined line refers to the outside of the protective cover 26 in which the light emitted from the plurality of LED elements 25 (FIG. 14) has a half-beam angle as described above. This is a line that can be drawn by connecting points that intersect the surface and approximating a straight line (because the protective cover 26 is ring-shaped, actually connecting the point groups forms a circle on the ring).
Further, as described above, the protective cover 26 is composed of two identical protective cover pieces. However, the vicinity of the two protective cover connecting portions 26b is also subjected to a textured process.
By applying the embossing to the outer surface of the protective cover 26 as described above, the occurrence of shadows on the circuit components 23a and 23b and the protective cover connecting portion 26b (connecting portion) is suppressed, and light emitted from the translucent cover 3 is emitted. It can be made uniform on the entire surface. Note that, on the outer surface of the protective cover 26, a portion that is not subjected to the graining process is transparent.

The texture processing, which is a surface treatment for diffusing light, will be described in more detail. The embossing of the protective cover 26 is realized by densely forming fine projections having a height (arithmetic average roughness: Ra) in the range of 5 μm to 100 μm on the surface. Ra can be measured using, for example, a surface roughness meter (manufactured by Tokyo Seimitsu Co., Ltd., Surfcom 1400G). In general, when the surface of a translucent member such as the protective cover 26 is subjected to a graining process, light diffusibility is hardly exhibited when the projection size is 5 μm or less, but when the projection size is 5 μm or more, the projection size increases. Light diffusibility is also increased.
In the embodiment, the projection size (height) is large in the range from the edge of the upper surface opening of the protective cover 26 to the line defined by the 1/2 beam angle, and is large at the edge of the upper surface opening, while defined by the 1/2 beam angle. The embossing process is performed by changing the projection size in an inclined manner so that the size is small in the vicinity of the line. Examples of the gradient change in the protrusion size include 60 μm at the opening edge of the upper surface and 5 μm near the line defined by the 1/2 beam angle.
By subjecting the surface of the protective cover 26 to such an inclined texture for the protrusion size, the illumination light of the ceiling light 100 emitted at a shallow angle close to parallel to the floor surface is greatly diffused by the large size protrusion. In addition, while the shadows of the circuit components 23a and 23b are effectively suppressed, the diffusibility to the illumination light of the ceiling light 100 emitted at an angle close to the floor surface direction is small, and the floor surface direction can be illuminated brightly. become.

Here, the protective cover 26 is composed of two identical protective cover pieces. However, the protective cover 26 may be composed of two or more members regardless of whether or not they are identical to each other. It can also be used as a member.
Further, the outer shape of the protective cover 26 is a ring-shaped half-pipe having an open top surface (an arc shape with a cross-section projecting downward), but the periphery of the protective cover opening 26a is an internal LED board 24 or lighting circuit board. It is possible to change the shape within a range that does not deteriorate the performance of the illumination device, for example, it does not interfere with the illumination light 23 and does not cause unevenness in intensity of illumination light. Further, the outer peripheral outer surface of the protective cover 26 does not have to be substantially curved all around the ring shape, and it is sufficient if the inclined surface is partially included within a range in which unevenness in intensity is not generated in the illumination light.

(3-1-11 Assembly of LED lighting device main body)
The mutual positional relationship among the hook holding part 10, the base member 21, the lighting circuit board 23, the LED board 24, and the protective cover 26 constituting the LED lighting device body 1 will be described with reference to FIGS. 2 and 3.
First, as shown in FIG. 3, the hook holding portion 10 is fitted and fixed to the base member 21. In addition, around the base member opening 21 a of the base member 21, six arc-shaped LED substrates 24 are disposed. A lighting circuit board 23 is disposed around the outer peripheral side of the LED board 24. An annular protective cover 26 is disposed so as to cover the LED substrate 24 and the lighting circuit substrate 23.

(4. Configuration and installation of translucent cover)
As shown in FIGS. 1 to 3 and FIGS. 17 to 20, the translucent cover 3 attached to the LED lighting device main body 1 includes a rear translucent cover 31 fitted to the protective cover 26, and this rear translucent cover. It consists of two members, a front translucent cover 32 that is attached to the lower opening of the light cover 31 and covers the LED lighting device body 1 from below, and uses a thermoplastic synthetic resin such as polypropylene (PP). Produced. When attaching the translucent cover 3 to the LED lighting device main body 1, first, the annular rear translucent cover 31 is attached to the protective cover 26 attached to the base member 21, and then the rear translucent The front cover fitting portion 31b provided inside the lower opening of the cover 31 and the rear cover fitting portion 32a of the front translucent cover 32 are fitted to each other so that the dome-shaped front translucent cover 32 is rear transparent. Attached to the light cover 31.
Since the translucent cover 3 is divided into two members, a rear translucent cover 31 and a front translucent cover 32, each of them is lighter than the case of an integral structure. Even if the installation work of the translucent cover 31 and the installation work of the front translucent cover 32 to the rear translucent cover 31 are work from the viewpoint of looking up at the ceiling surface from the floor surface direction, it should be performed easily. Can do.
The details of the work procedure for attaching the rear translucent cover 31 to the protective cover and the fact that the work can be easily carried out have already been explained.

The reason why polypropylene (PP) is used as the material of the translucent cover 3 is suitable for reducing the weight and reducing the cost, and is not explained here, but is output from an external remote controller. This is because it is suitable for transmitting an infrared signal and reaching the receiving unit inside the ceiling light 100.
In addition, the translucent cover 3 is formed from a continuous curved shape, subjected to a texture processing to form a light diffusion surface that has a high density, or contains a diffusing agent in the material. The emitted light can be made uniform over the entire surface.

As described above, in this embodiment, in the ceiling light 100 including the hooking blade 12 that can be directly attached to the wiring device 7 such as the hooking ceiling body of the ceiling surface without using an auxiliary device such as an adapter, The translucent cover 3 can be attached to the protective cover 26 attached to the apparatus main body 1 by a simple operation.
<Second Embodiment>
DESCRIPTION OF EMBODIMENTS Preferred embodiments of the present invention are described in detail below with reference to the drawings. Here, a ceiling light will be described as an example of a lighting device. The “ceiling light” here refers to an illuminating device used by being attached to a member to be attached such as a hook ceiling or a rosette.
In the following description, it is assumed that the ceiling light is attached to the ceiling surface for the sake of convenience, and the illumination light of the ceiling light is irradiated downward (on the floor surface side). In addition, examples of the ceiling light attached to the mounted member on the ceiling surface include those used in living rooms such as living rooms, Japanese-style rooms, bedrooms, children's rooms, and those used in hallways, toilets, entrances, etc. is there. Moreover, there exists what was provided in the wall surface as a to-be-attached member, and it can apply also to such an illuminating device.

  Wiring devices 1007, which are members to be attached to the ceiling light, generally have round hook ceiling, square hook ceiling, round full hook ceiling, full round rosette, etc., which have been used for a long time Has been. In both types, commercial power wiring from outside is taken in and connected to a connection terminal inside the main body. An attachment surface formed on the front surface of the main body of the wiring device 1007 (the floor surface side when installed on the ceiling surface 1005) is provided with a bow-shaped hooking blade insertion hole for inserting the hooking blade of the ceiling light, When the hooking blade of the ceiling light is inserted and fitted, the hooking blade and the connection terminal come into contact with each other, and lighting power is supplied to the ceiling light.

(1. Configuration of ceiling light)
As shown in FIGS. 27 to 29, an illumination device, here a ceiling light 1100 shown as an example, is mounted on the LED illumination device main body 1001 and the LED illumination device main body 1001 as shown in FIG. It is comprised with the translucent cover 1003 attached to the LED lighting apparatus main body 1001 so that the emission direction of the light which the LED element 1025 emits may be covered.

(2. Mounting the ceiling light on the ceiling)
The ceiling light 1100 is attached to the ceiling surface 1005 by attaching the LED illumination device main body 1001 to the wiring fixture 1007 via the hooking blade 1012 and then attaching the translucent cover 1003 to the LED illumination device main body 1001.
(2-1. Installation of LED lighting device body)
The LED lighting device main body 1001 is detachable by a hooking blade 1012 that is electrically and mechanically connected to a wiring device 1007 that is a member to be attached such as a hooking ceiling or hooking rosette already installed on the ceiling surface 1005 (FIG. 28). It is mounted on the ceiling surface 1005. Specifically, as shown in FIG. 27 to FIG. 29, FIG. 41 and FIG. 43, the existing wiring fixture 1007 on the ceiling surface 1005 is provided at the center of the LED lighting device main body 1001 while supporting the LED lighting device main body 1001. The hooking blade 1012 in the hooked holding portion 1010 is inserted, and in this state, the LED lighting device main body 1001 is moved in a direction in which the wiring device 1007 and the hooking blade 1012 are engaged while pressing the LED lighting device main body 1001 upward. Rotate.
Note that when the hooking blade 1012 provided in the hooking holding portion 1010 is inserted into the existing wiring device 1007 on the ceiling surface 1005, the hooking holding portion 1010 is made of a transparent synthetic resin material. Therefore, the position and orientation of the wiring fixture 1007 can be seen through the hook holding portion 1010 even from below the central portion of the LED lighting device main body 1001. The operation of attaching the main body 1001 to the wiring device 1007 can be easily performed.

(2-2. Installation of translucent cover)
In this way, after the LED lighting device main body 1001 is rotated and attached to the wiring fixture 1007, four post-translucent properties are provided on the outer peripheral portion of the protective cover 1026 attached to the LED lighting device main body 1001. Four protective cover fitting portions 1031a provided on the outer periphery of the upper end of the rear translucent cover 1031 are aligned and fitted to the cover fitting portion 1026d, and the rear translucent cover 1031 is attached to the LED lighting device. Attached to the main body 1001.
Further, four front cover fitting portions 1031b provided on the outer periphery of the lower end of the rear translucent cover 1031 and four rear cover fitting portions provided on the outer periphery of the upper end of the front translucent cover 1032. 1032a is aligned and fitted, and the front translucent cover 1032 is attached to the rear translucent cover 1031. As a result, the ceiling light 1100 can be used.

When the ceiling light 1100 is mounted on the ceiling surface 1005, a plurality (three in this case) are mounted on the ceiling surface 1005 side of the base member 1021 of the LED lighting device main body 1001 described later shown in FIGS. The center portion of the ceiling spring 1022 (FIG. 27) is in contact with a plurality of locations (here, 3 locations) of the ceiling surface 1005. As shown in FIGS. 27 and 28, the ceiling spring 1022 is an elongated plate, and is curved in an arc shape so that the central part in the long side direction is convex in a natural state (a state where no load is applied). It is a plastic leaf spring. That is, the ceiling spring 1022 is constituted by an elongated leaf spring. Here, the ceiling spring 1022 is fixed to the base member 1021 so as to bend in an arc shape and project to the ceiling surface 1005 side. The ceiling spring 1022 generates a (repetitive) force in a direction to return to the curved shape in the natural state when the curved shape changes from the curved shape in the natural state upon receiving a load.
The ceiling spring 1022 is fixed to the base member 1021 by fixing means such as an adhesive, a screw, and a pin, for example. As a specific example, the ceiling spring 1022 is fixed by inserting one end of the long side (one end in the longitudinal direction) into the base member 1021 and the other end (the other end in the longitudinal direction). It is attached to the base member 1021 in a state where it is not. The other end of the ceiling spring 1022 is simply in contact with the ceiling surface 1005 side of the base member 1021, but may not be in contact. When the ceiling light 1100 is mounted on the ceiling surface 1005, the ceiling spring 1022 is first brought into contact with the ceiling surface 1005. Therefore, the ceiling light 1022 is deformed in a direction in which the curvature of the ceiling spring 1022 is reduced, that is, the ceiling light 1100 is mounted on the ceiling surface 1005. While pushing up in the direction of 1005, the hooking blade 1012 of the hook holding portion 1010 is inserted into the existing wiring device 1007 on the ceiling surface 1005.
After the ceiling light 1100 is attached to the ceiling surface 1005, the ceiling light 1100 is always substantially the same as the ceiling surface 1005 in a state where the ceiling light 1100 receives a force in a direction (downward) away from the ceiling surface 1005 due to the restoring force of the ceiling spring 1022. Supported in parallel. The restoring force of the ceiling spring 1022 also has a function of preventing displacement and vibration of the ceiling light 1100 mounted on the ceiling surface 1005.
Here, the ceiling spring 1022 is a curved plastic leaf spring. However, in the state where the ceiling light 1100 is attached to the ceiling surface 1005, a force in a direction to separate the ceiling light 1100 from the ceiling surface 1005 is always applied. There is no particular limitation as long as it has a function to emit, and for example, an elastic body processed into a shape that elastically deforms metal or the like, or an elastic body made of an elastic material such as rubber can also be used.

(3. Structure of the LED lighting device body)
In this embodiment, as shown in FIGS. 28 and 29, the LED lighting device main body 1001 includes a base member 1021 and a hook holding portion that is fitted and fixed to the base member 1021 and integrated with the base member 1021. 1010, LED element 1025, LED board 1024 disposed on base member 1021 and mounted with LED element 1025, lighting circuit board 1023 for supplying power for lighting LED element 1025, and lighting circuit board The protective cover 1026 covers 1023 and the LED substrate 1024.
Here, the hook holding portion 1010 includes the hooking blade 1012 on the hooking blade holding member 1011 as shown in FIGS. 32 to 35 in particular. The hooking blade 1012 plays a role of electrically and mechanically connecting the ceiling light 1100 to the existing wiring device 1007 on the ceiling surface 1005. The hook holding portion 1010 is integrated into the base member opening 1021a at the center of the base member 1021. More specifically, the hook holding portion 1010 is fixed to the base member 1021 from the floor side (below) so as to close the base member opening 1021a formed at the center of the disc-shaped base member 1021, The base member 1021 is installed on substantially the same plane.
In the illustrated embodiment, a plurality of LED boards 1024 and lighting circuit boards 1023 are provided as shown in FIGS. The plurality of LED substrates 1024 are fixed to an LED substrate holding portion 1021 d formed on the base member 1021. The plurality of lighting circuit boards 1023 are portions of the base member 1021 excluding the LED board holding part 1021d, specifically, the back surfaces of the outer peripheral edge side ribs 1211b on the outer peripheral side of the base member 1021 with respect to the LED board holding part 1021d. It is directly fixed at a predetermined position on the (lower surface). That is, the plurality of lighting circuit boards 1023 are fixed to the outer portion of the LED board 1024 in the base member 1021 when viewed from the floor surface side.
The protective cover 1026 covers the LED substrate 1024 and the lighting circuit substrate 1023 from below in order to protect them. More specifically, as shown in FIGS. 39 to 42, 48 and 49, the protective cover 1026 is connected to the LED board 1024, the lighting circuit board 1023, and the LED board 1024 fixed to the base member 1021. (Lead wire 1024b) and electrical wiring (lead wire 1023d) connecting the lighting circuit board 1023 and the LED board 1024 are covered from below so as not to be exposed below the base member 1021. As shown in FIG. 48, the protective cover 1026 is fixed to the lower surface of the base member 1021 on the floor surface side.
This ceiling light 1100 has a structure in which the hooking blade 1012 is inserted and attached directly to the hooking blade insertion hole of the existing wiring device 1007 on the ceiling surface 1005 without using an adapter as an auxiliary tool. The protruding amount of the light 1100 can be reduced (thinned).

(3-1 Base member)
For example, the base member 1021 of the LED lighting device main body 1001 uses a metal material such as a cold rolled steel plate (SPCC) having a thickness of 0.5 mm to 2.0 mm to perform punching, pressing, bending, or the like. Produced by. The base member 1021 has a flat plate shape and has an annular shape having a base member opening 1021a at the center when viewed from the floor surface side. The “central portion” here is a region including the center or the center of gravity of the base member 1021. Specifically, as shown in FIG. 37, the base member 1021 has a disk shape. A circular base member opening 1021a is formed at the center. That is, the base member 1021 has an annular shape in which the outer peripheral shape and the inner peripheral shape are circular.
The hook holding portion 1010 is positioned in the base member opening 1021a by fitting the base member positioning portion 1011g (FIG. 32) of the hooking blade holding member 1011 into the hooking blade holding portion positioning portion 1021g (FIG. 37). In this state, the base member opening 1021a is fixed so as to be closed, and the hooking blade 1012 is installed at the center of the base member 1021. Accordingly, an LED substrate holding portion 1021d is formed adjacent to the hook holding portion 1010 that holds the hook blade 1012.
The hook holding portion 1010 is fixed to the base member 1021 with its upper portion entering the base member opening 1021a from below and closing the base member opening 1021a. As a result, the hooking blade 1012 of the hook holding portion 1010 extends upward from the upper surface of the base member 1021.
The hook blade holding member 1011 is made of, for example, a synthetic resin material. Here, for example, when the hooking blade holding member 1011 provided with the hooking blade 1012 is formed of a transparent synthetic resin material (at least it should be transparent after the formation), the base member opening 1021a becomes the hooking holding portion. Even after the LED lighting device main body 1001 is attached to the existing wiring fixture 1007 on the ceiling surface 1005, the base member opening 1021 a (the hook holding portion 1010) from the lower side of the LED lighting device main body 1001 even after the LED lighting device main body 1001 is closed. ) And the position and orientation of the wiring device 1007 can be visually recognized. In addition, even if the synthetic resin material is not transparent, it has an advantage from the viewpoint of weight reduction and insulation.
The space formed by the base member opening 1021a and the hook holding portion 1010 fixed in this space are referred to as a transmission window 1015 (FIG. 31) here. That is, in the illustrated embodiment, the hook holding portion 1010 formed from a transparent material also serves as the transmission window 1015.

As shown in FIGS. 37 and 38, the base member 1021 is formed with a protruding portion that protrudes downward. The protrusion has an annular shape (here, an annular shape) when viewed from the floor surface side. The lower surface of the protrusion (the surface on the floor surface side) has a flat shape, and as shown in FIGS. 38 and 39, this flat portion is an LED substrate holding portion 1021d (arrangement surface 1211c). That is, as shown in FIGS. 37 and 38, the disk-shaped base member 1021 protrudes downward (the floor surface side when the ceiling light 1100 is installed on the ceiling surface 1005), and the LED substrate is formed on the top surface thereof. A flat arrangement surface 1211c for holding (arranging) 1024 is formed, and an LED substrate holding portion 1021d arranged in a substantially annular shape is formed. The LED substrate 1024 is arranged on the arrangement surface 1211c and is held by holding means such as screws and pins.
A base outer edge portion 1021c is formed on the outermost peripheral portion of the base member 1021 by bending the outer edge portion downward. A plurality of radial ribs 1021 f are formed radially in the radial direction of the base member 1021. That is, the base member 1021 has a base outer edge portion 1021c bent downward at the outer peripheral edge. The base member 1021 has a plurality of radial ribs 1021f that protrude toward the ceiling surface 1005 and extend in the radial direction.
Here, based on the protruding portion (LED substrate holding portion 1021d), the base member 1021 has an inner peripheral edge side rib 1211a on the inner peripheral side of the protruding portion and an outer peripheral edge side rib 1211b on the outer peripheral side of the protruding portion. Each has.
The mechanical rigidity of the base member 1021 is enhanced by the rib effect of the annular LED substrate holding portion 1021d, the base outer edge portion 1021c, and the radial rib 1021f. Due to this rigidity enhancement, the thickness of the metal material constituting the base member 1021 can be reduced, and the weight of the ceiling light 1100 can be reduced, and this weight reduction makes it possible to attach the ceiling light 1100 to the ceiling surface 1005. It becomes easier.

As shown in FIG. 37, the LED substrate holding portion 1021d, which is a substantially annular lower protrusion and forms an arrangement surface 1211c whose top surface on the lower side is a flat surface, is an imaginary center of a disk-shaped base member 1021. The annular ring is divided into a plurality of sections (here, six sections) by radial ribs 1021f formed radially at substantially equiangular intervals (here, 60 °). The LED substrate 1024 is fixed to each of the plurality of sections. That is, each LED board 1024 is arranged between the radial ribs 1021f adjacent to the lower surface of the projecting part (also the LED board holding part 1021d) in the circumferential direction.
The lower surface (arrangement surface 1211c) of the LED substrate holding part 1021d for fixing the LED substrate 1024 is a flat surface as shown in FIG. 38, but is horizontal, that is, the base member 1021 excluding the LED substrate holding part 1021d. It is not parallel to the flat surface (for example, the surface on which the lighting circuit board 1023 is mounted) that is the other part, and is not parallel to the flat surface that is the other part of the base member 1021 except for the LED board holding portion 1021d. It is formed with a predetermined inclination.
In this case, as particularly shown in FIG. 38, the arrangement surface 1211c of the LED substrate holding portion 1021d is such that the separation distance of the arrangement surface 1211c from the flat plate surface of the base member 1021 is larger than the outer peripheral side of the base member 1021. Is inclined so that the center side thereof (side closer to the base member opening 1021a) becomes larger.
That is, the arrangement surface 1211c is inclined so that the side close to the virtual center of the base member 1021 is located below (floor side) compared to the side close to the outer periphery of the base member 1021. That is, the arrangement surface 1211c is inclined in a state in which the protrusion amount (based on the flat plate surface) decreases as the distance from the base member opening 1021a increases. As a result, the LED substrate 1024 held on the arrangement surface 1211c is inclined outward (toward the outer peripheral side of the base member), so that the irradiation angle of the light emitted from the LED element 1025 is wide. Ensured and can irradiate light widely and uniformly.

The inclination angle of the arrangement surface 1211c of the LED substrate holding portion 1021d is selected so that the irradiation angle of the light emitted from the LED element 1025 can be secured as wide as possible within the range where the central portion of the ceiling light 1100 does not become dark. The range of 5 ° to 20 ° with respect to the flat surface of the base member 1021 is desirable.
In addition, as shown in FIG. 38, the arrangement surface 1211c of the LED substrate holding portion 1021d that fixes the LED substrate 1024 is formed on the lower surface of the protruding portion that protrudes downward from the base member 1021, and among the arrangement surfaces 1211c, The protrusion height from the flat plate surface on the outer peripheral side of the base member 1021 is set to be higher than the surface position of the lighting circuit board 1023. That is, the arrangement surface 1211c is located below the lower surface of the lighting circuit board 1023. For this reason, it is difficult for the circuit components 1023a and 1023b (FIG. 40) to cast shadows, and light can be emitted widely and uniformly.
Here, the base member 1021 has a disc shape, but is not necessarily limited to the disc shape, and may be, for example, a rectangular flat plate shape. Further, the base member opening 1021a is circular, but is not necessarily limited to a circular shape, and may be a polygonal shape such as a quadrangle or a hexagon.

Around the base member opening 1021a, as shown in FIGS. 37 and 38, there is a hooking blade holding fitting portion 1021b for positioning and fixing the hooking holding portion 1010 with the hooking blade holding portion positioning portion 1021g. Is provided.
As shown in FIGS. 37 and 38, the base member 1021 has a hooking blade holding fitting portion 1021b that comes into contact with the hook holding portion 1010 that fits into the base member opening portion 1021a on the lower peripheral surface of the base member opening portion 1021a. ing. The hooking blade holding fitting portion 1021b is provided with a notch cut out from the base member opening portion 1021a side. This notch is a hooking blade holding part positioning part 1021g, and fits with the base member positioning part 1011g of the hooking blade holding member 1011. When the base member 1021 is viewed from the floor surface side, the protrusion (LED board holding portion 1021d) is provided at a position near the outer peripheral side of the hooking blade holding fitting portion 1021b. The mechanical properties at the same are also ensured by the rib effect.
In the base member 1021, the fixing portion of the LED substrate holding portion 1021d and the lighting circuit substrate 1023 is formed in advance (for example, integrated processing), but by attaching the hook holding portion 1010, the ceiling surface The hooking blade 1012 that can be electrically and mechanically connected directly to the wiring apparatus 1007 already installed in the line 1005 is further provided.
In addition, a hooking blade holding part fixing hole 1021h for fixing the hooking blade holding member 1011, an LED board fixing hole 1021j for fixing the LED board 1024, and a lighting circuit board 1023 are fixed to the base member 1021. A lighting circuit board fixing hole 1021k for fixing, a protective cover fixing hole 1021m for fixing the protective cover 1026, and a ceiling spring fixing hole 1021n for fixing the ceiling spring 1022 are provided. These holes are used when screws or hook pins (not shown) are inserted to fix target element members such as the LED board 1024 and the hook holding portion 1010 to the base member 1021. The hooking blade holding portion fixing hole 1021h is provided in the hooking blade holding fitting portion 1021b.

(3-2 Configuration of hook holding unit)
As shown in FIGS. 32 to 34, the hook holding unit 1010 includes at least a hook blade holding member 1011 and a pair of hook blades 1012. Here, the hook holding portion 1010 is a hook that functions as a pair of hook blade holding member 1011 and a substantially rectangular groove-shaped rotating portion 1011a provided at the center of the hook blade holding member 1011. The blade 1012, the lock member 1013, and the power line 1014 are included. The ceiling light 1100 is directly and electrically and mechanically connected to the wiring device 1007 by the hooking blade 1012 of the hook holding portion 1010. The hook holding portion 1010 functions as an attachment portion for attaching the LED lighting device main body 1001 to the wiring fixture (attached member) 7.

(3-3) Hook blade holding member
The hook blade holding member 1011 has at least transparency. The hook blade holding member 1011 here is made of a synthetic resin material that is transparent and also has excellent insulation and flame retardancy. As such a synthetic resin material, for example, polycarbonate (PC) can be used. In this case, specifically, the entire hooking blade holding member 1011 can be integrally formed from polycarbonate (PC). Thus, the hook holding portion 1010 provided with the hook blade holding member 1011 made of a transparent material as a whole is attached to the base member opening 1021 a provided at the center of the base member 1021 to form the transmission window 1015. Thus, when the ceiling light 1100 is attached by inserting the hooking blade 1012 provided in the hooking holding portion 1010 into the hooking blade insertion hole of the wiring device 1007 already provided on the ceiling surface 1005, the hooking blade holding member 1011 is transparent. Since it is made of a resin material, it can be transmitted through the transmission window 1015 at the center of the LED lighting device main body 1001 even from below the LED lighting device main body 1001. Thereby, the position and installation direction of the wiring device 1007 including the peripheral part of the wiring device 1007 can be visually recognized with a wide field of view without a blind spot. For this reason, the operation | work which attaches the LED lighting apparatus main body 1001 to the wiring fixture 1007 can be performed easily. As the transmission window 1015, that is, the synthetic resin material (the material after formation) for forming the hook blade holding member 1011, a material having a light transmittance of 70% or more is preferable.
Even though the transmission window 1015 is translucent, there is no problem in the visibility of the wiring device 1007, but it is desirable that the transmission window 1015 be clearly visible if possible. This is because if the transmittance is small, it may be difficult to ensure sufficient visibility.

As shown in FIGS. 32 to 34, the hook blade holding member 1011 has a bottomed cylindrical shape having a double cylinder of an outer cylinder 1011p and an inner cylinder 1011r, and the rear surface (upper surface) side corresponding to the bottom side is an inner cylinder. The bottom surface protrudes further rearward (upward) from the bottom surface of the outer cylinder to form a two-step bottom surface (FIG. 33) from which a central circular portion (this circular portion is also referred to as “central circular portion”) protrudes. That is, the hooking blade holding member 1011 has a step 1011i on the upper surface for fitting with the base member opening 1021a. The step 1011i is higher on the center side than on the outer peripheral side (closer to the ceiling). This facilitates positioning of the hooking blade holding member 1011 with respect to the base member opening 1021a (FIG. 37). Moreover, although the position of the level | step difference 1011i respond | corresponds to the bottom face of the inner cylinder 1011r, there may be a level | step difference in the bottom face of an outer cylinder, for example. Furthermore, although the level of the step is lower on the outer peripheral side and higher on the central side, the outer peripheral side may be higher than the central side. In this case, for example, the fitting structure can be implemented by a structure in which the opening edge of the base member opening is bent downward.
In the central circular portion on the rear surface side of the hooking blade holding member 1011, a space for mounting the hooking blade 1012 for attaching the hooking blade holding member 1011 to the wiring device 1007 on the ceiling surface 1005 is provided. Here, it is formed inside a rotating portion 1011a that has a substantially rectangular groove shape when viewed from the ceiling surface 1005 side. In other words, the rotating portion 1011a is recessed in a rectangular shape downward from the center portion of the hooking blade holding member 1011. The recessed portion is a space for mounting the hooking blade 1012.
The groove (inside) of the rotating part 1011a is provided with a hooking blade fixing groove 1011c into which a screw for fixing the hooking blade 1012 is inserted, and a hooking blade installation part provided with unevenness for firmly fixing the hooking blade 1012. 1011d.
That is, as shown in FIGS. 32 and 33, a fixing means for fixing the hooking blade 1012 is provided inside the rotating portion 1011a. The fixing means is constituted by a boss, a rib, a concave portion, a dent, and the like. Specifically, the boss 1011c ′ protruding upward from the bottom surface of the rotating portion 1011a, the ribs 1011u and 1011v provided on the bottom surface and the side surface and extending upward, and the dent provided on the side surface extending in the vertical direction. Groove 1011w and the like.
The boss 1011c ′ does not reach the opening of the rotating portion 1011a, and has an upper surface at a position closer to the bottom surface than the rear surface of the hooking blade holding member 1011. The boss 1011c ′ has a screw hole on the upper surface. This screw hole is the hooking blade fixing groove 1011c. The ribs 1011u and 1011v are in contact with a blade fixing portion 1012c of a hooking blade 1012 described later. The rib 1011v is notched at the top on the boss 1011c ′ side, the side surface of the notch abuts the blade fixing portion 1012c, and the bottom surface of the notch abuts the bottom surface of the blade fixing portion 1012c. The ribs 1011u and 1011v are connected to the boss 1011c ′. The groove 1011w is fitted with the positioning protrusion 1012f of the blade fixing portion 1012c of the hooking blade 1012. The position of the bottom in the vertical direction of the groove 1011w substantially coincides with the position of the upper surface of the boss 1011c ′. By the fixing means, the blade fixing portion 1012c of the hooking blade 1012 is supported in a positioned state and is finally fixed by a screw. In addition, said hooking blade installation part 1011d is comprised by the boss | hub 1011c ', the rib 1011u, 1011v, and the groove | channel 1011w.
Further, on the outer peripheral portion on the rear surface (upper surface) side of the hooking blade holding member 1011, a base member alignment portion 1011 g used for positioning when the hooking blade holding member 1011 is fixed to the base member 1021 and a base member 1021 are fixed. A base member fitting portion 1011h serving as a fixed surface (contact surface) is formed.
That is, the outer peripheral portion of the step 1011i on the rear surface of the hooking blade holding member 1011 is a base member fitting portion 1011h that supports (contacts) the hooking blade holding fitting portion 1021b of the base member 1021 from the floor surface side. The base member alignment portion 1011g projects radially from the step 1011i and engages with the hooking blade holding portion alignment portion 1021g of the base member 1021. The fitting relationship (concave / convex relationship) between the base member alignment portion 1011g and the hooking blade holding portion alignment portion 1021g may be reversed.
Furthermore, a power line 1014 for supplying commercial power from the hooking blade 1012 to the lighting circuit board 1023 is accommodated from one end of the rotating portion 1011a on the rear surface (upper surface) side of the hooking blade holding member 1011 toward the outer peripheral portion. A wiring groove 1011e and a wiring fixing portion 1011f for fixing the power line 1014 disposed in the wiring groove 1011e are formed.
The hooking blade holding member 1011 has a wiring groove 1011e for accommodating the power line 1014. The wiring groove 1011e extends in the radial direction of the hooking blade holding member 1011. As shown in FIGS. 33 and 34, the end of the wiring groove 1011e near the turning portion 1011a is connected to the turning portion 1011a, and the end of the wiring groove 1011e is connected to the notch 1011t of the outer cylinder 1011p.
Furthermore, a lock member disposing portion 1011m that houses a lock member 1013, which will be described later, is provided at one end corner portion of the rotating portion 1011a provided at the central portion on the rear surface (upper surface) side of the hooking blade holding member 1011. From 1011b, the pressing portion 1013d of the lock member 1013 is exposed from the rotating portion 1011a. The lock member placement portion 1011m is formed between the boss 1011c ′ inside the turning portion 1011a and the short side surface constituting the turning portion 1011a having a rectangular recess, and is lower than the boss 1011c ′. Of space. The lock opening 1011b is formed on the side surface of the rotating part 1011a.

On the other hand, on the front surface (lower surface) side of the hooking blade holding member 1011, as shown in FIG. 34, the LED lighting device main body 1001 (FIG. 29) with respect to the wiring device 1007 already installed on the ceiling surface 1005 at the center. When the LED lighting device body 1001 is manually rotated when attaching and detaching, a knob portion 1011j protruding into a substantially rectangular parallelepiped shape that is convenient for use is formed. As shown in FIG. 34, the knob portion 1011j has a shape in which both wall surfaces on the long side are slightly concavely curved so that it can be easily pinched and rotated with a finger. Furthermore, unevenness as anti-slip is formed on both the wall surfaces.
A protective cover fixing groove 1011o for fixing the inner peripheral portion of the protective cover 1026 and a hooking blade holding member 1011 for fixing the hooking blade holding member 1011 to the base member 1021 are provided on the peripheral portion on the front surface (lower surface) side of the hooking blade holding member 1011. A base member fixing groove 1011n is formed. Here, the knob portion 1011j has an internal space that opens to the rear surface side of the hooking blade holding member 1011. This space is also used as the rotating portion 1011a described above. Thereby, the structure of the hook holding part 1010 can be simplified and the hook blade holding member 1011 can be made thinner. Further, since the knob portion 1011j is sized in consideration of operability, the internal space can be increased. Thereby, the hooking blade 1012 and the like can be easily accommodated.

  Further, since the hooking blade holding member 1011 is formed of an insulating material such as polycarbonate (PC) as described above, the hooking blade 1012 is directly attached to the hooking blade holding member 1011 and the hooking blade 1012 is attached. Even if the ceiling light 1100 is connected to the energized wiring device 1007, there is no risk of an electrical short circuit with a metal member, such as the base member 1021, and the ceiling light 1100 can be attached and removed easily and safely. be able to. In addition, by forming the hook blade holding member 1011 from an insulating material such as polycarbonate in this way, insulation measures are not required, and weight reduction and transparency can be promoted.

In addition, the material used for manufacture of the hooking blade holding member 1011 is not necessarily limited to polycarbonate, and has rigidity necessary for the hooking blade holding member 1011 in addition to transparency, insulation, and flame retardancy. Any other material may be used. For example, flame retardant polybutylene terephthalate (PBT) may be used. Here, the entire hooking blade holding member 1011 is integrally formed of an insulating material, but at least a portion of the hooking blade holding member 1011 that contacts the hooking blade 1012 or a portion facing the hooking blade 1012 is used. It may be formed of an insulating material, and only a part of the hooking blade holding member 1011 is formed of an insulating material, or the hooking blade holding member 1011 made of a metal material is covered with an insulating material. You can also.
The protective cover fixing groove 1011o and the base member fixing groove 1011n are provided in the boss portion. The bosses (protective cover fixing groove 1011o and base member fixing groove 1011n) are formed between the outer cylinder 1011p and the inner cylinder 1011r. For this reason, it can suppress that the protective cover fixing groove 1011o and the base member fixing groove 1011n interfere with foreign substances. The protective cover fixing groove 1011o and the base member fixing groove 1011n are integrated (continuous) with the outer cylinder 1011p. For this reason, the strength of the protective cover fixing groove 1011o and the base member fixing groove 1011n can be improved. The outer peripheral surface of the hook holding and fixing guide 1026j of the protective cover 1026 is in contact with the outer peripheral surface of the inner cylinder 1011r. As a result, the inner cylinder 1011r is reinforced.

(3-4 Hook blade)
As shown in FIG. 35, the hooking blade 1012 is manufactured by punching, pressing, bending or the like using a conductive metal material such as brass. The hooking blade 1012 has a flat blade fixing portion 1012c and a hooking portion 1012a standing from the end of the blade fixing portion 1012c. The blade fixing portion 1012c is provided with a blade fixing hole 1012b for fixing and a blade terminal hole 1012e for electrical connection. Here, the hooking portion 1012a has an inverted “L” shape.
The hooking blade 1012 is fixed in the rotating part 1011a. Specifically, as shown in FIG. 32, the hooking blade holding member 1011 is provided with a pair of hooking blades 1012 each having a concave shape provided on the rotating portion 1011a of the hooking blade holding member 1011. Is inserted into the hooking blade installation portion 1011d (FIG. 33), and is fixed by a screw inserted through the blade fixing hole 1012b and screwed into the hooking blade fixing groove 1011c. In this state, the front end portion of the hooking portion 1012a protrudes toward the wiring device 1007 side of the attached member of the ceiling surface 1005.
More specifically, as shown in FIGS. 27 to 33, the pair of hooking blades 1012 has a hooking blade holding member so that a substantially L-shaped hooking portion 1012a is erected on the upper side of the hooking blade holding member 1011. The blade fixing portion 1012c and the blade terminal fixing portion 1012d are aligned with the hooking blade installation portion 1011d of 1011 and fixed to the hooking blade holding member 1011 with a screw. That is, in the state where the blade fixing portion 1012c of the hooking blade 1012 and the boss 1011c ′ and the ribs 1011u and 1011v in the rotating portion 1011a are in contact with each other, the screw that inserts the blade fixing hole 1012b from the ceiling surface 1005 side is the hooking blade fixing groove. Screwed into (screw hole) 11c. Thereby, the hooking blade 1012 is fixed (held) to the hooking blade holding member 1011.
Since a large force is applied to the hooking blade 1012 in the lateral direction (rotating direction) when the hooking blade 1012 is inserted into the wiring device 1007 and rotated, the hooking blade 1012 is provided to fix the hooking blade 1012. In other words, the hooking blade 1012 is fixed inside the rotating portion 1011a in a state where the side surface of the blade fixing portion 1012c is in contact with the ribs 1011u and 1011v and the positioning projection 1012f is inserted into the groove 1011w. The hooking portion 1012a is erected from the corner of the blade fixing portion 1012c, and is fixed in a state where the back surface of the hooking portion 1012a is in contact with the side surface of the rotating portion 1011a. Thereby, the hooking blade 1012 is firmly fixed to the hooking blade holding member 1011.
The power line 1014 is inserted into the blade terminal hole 1012e of the hooking blade 1012, and the end of the power line 1014 led out from the blade terminal hole 1012e is fixed to the blade terminal fixing portion 1012d by solder. As a result, the external power from the wiring device 1007 and the lighting circuit board 1023 are electrically connected via the hooking blade 1012.

  The hooking blade 1012 has the same standard as the hooking blade of the adapter used when the general ceiling light 1100 is attached to the ceiling surface 1005. Therefore, without using a relay device such as an adapter for the wiring device 1007, the LED lighting device main body 1001 is directly and electrically connected to the wiring device 1007 that is a member to be attached by the hooking blade 1012 provided on the hooking blade holding member 1011. And mechanically connectable. The hook holding portion 1010 includes a hooking blade holding member 1011 provided with a locking mechanism to be described later. The LED lighting device main body 1001 is hooked by inserting the hooking blade 1012 into the wiring device 1007 and rotating. It is fixed by the engaging force of the blade 1012 and the lock mechanism.

(3-5 Lock member)
The locking member 1013 is a hooking blade for preventing the hooking blade 1012 from being detached from the wiring device 1007 in a state where the LED lighting device main body 1001 is mounted on the wiring device 1007 on the ceiling surface 1005 and used as the ceiling light 1100. With the lock function.
As shown in FIG. 36, the lock member 1013 includes a fixed base portion (first movable portion) 1013b that is movable in the insertion / removal direction with respect to the hooking blade insertion hole of the wiring device 1007, and a release base. And a lock base portion (second movable portion) 1013e which is arranged so as to be movable in the operation direction, and a spring portion 1013g which connects the fixed base portion 1013b and the lock base portion 1013e. The spring portion 1013g is inclined in the no-load state (FIG. 36 (a)). When the lock base portion 1013e moves so as to approach the fixed base portion 1013b during the release operation, the spring portion 1013g is brought into an upright state, and the fixed base portion 1013b is immersed (FIG. 36B). A fixed claw 1013a is provided at the distal end of the fixed base portion 1013b in the insertion / extraction direction, and a pressing portion 1013d is provided outside the lock base portion 1013e. Further, the fixed claw 1013a here has an insertion / removal direction in the up / down direction and an operation direction of the pressing portion 1013d in the horizontal direction. The locking member 1013 has a rotating portion so that the fixed claw 1013a advances from the rotating portion 1011a to the ceiling surface 1005 side, and the pressing portion 1013d projects from the lock opening 1011b (FIG. 33) to the outside of the knob portion 1011j. 1011a.
Specifically, as shown in FIG. 32, the lock member 1013 is housed in the root portion of the hooking blade 1012 in the rotating portion 1011 a of the hooking blade holding member 1011. After the distal end portion (hooking portion 1012a) of the hooking blade 1012 is inserted into an arcuate hooking blade insertion hole (not shown) provided in the wiring device 1007 such as the ceiling surface 1005, the LED lighting device is rotated. When the main body 1001 is fixed to the wiring device 1007, the fixing claw 1013 a (FIG. 36) enters the arc-shaped hooking blade insertion hole provided in the wiring device 1007, so that the hooking blade 1012 is detached from the wiring device 1007. Rotation, that is, rotation opposite to that at the time of fixing is prevented. The lock member 1013 has a substantially N shape as shown in FIG. 36 and is made of a resin having elastic properties such as polyacetal (POM). FIG. 36 shows an operation state of the lock member 1013, and FIG. 36 (a) shows a state in which the fixed claw 1013a protrudes upward in a normal shape. In a state where the LED lighting device main body 1001 is attached to the wiring device 1007, the fixed claw 1013 a maintains the state of FIG. 36A in the arc-shaped hooking blade insertion hole provided in the wiring device 1007. . Therefore, in a state where the LED lighting device main body 1001 is fixed to the wiring device 1007, the arc-shaped hooking blade insertion hole provided in the wiring device 1007 has the hooking portion 1012a of the hooking blade 1012 at one end and the other end at the other end. The locking claw 1013a of the lock member 1013 is inserted, and the hooking blade 1012 cannot rotate with respect to the wiring device 1007.
On the other hand, FIG. 36B shows a state where the pressing portion 1013d of the lock member 1013 is pressed and the fixed claw 1013a is retracted downward. When removing the LED lighting device main body 1001 from the wiring fixture 1007, the pressing portion 1013d is pushed to retract the fixing claw 1013a, that is, the fixing claw 1013a is removed from the arc-shaped hooking blade insertion hole provided in the wiring fixture 1007. Then, the hooking blade 1012 is made rotatable and removed.

The movement of the lock member 1013 when the pressing portion 1013d is pressed will be described in more detail. When the pressing portion 1013d is pushed to release the lock mechanism, a semi-cylindrical base protrusion 1013f provided at the lower portion of the lock base portion 1013e slides on the inner lower portion (bottom surface) of the rotating portion 1011a, and the lock base The part 1013e moves and the spring part 1013g is pushed. When the spring portion 1013g is pushed, the spring portion 1013g rises (the inclination of 13g, which was inclined when viewed from the side, approaches vertical), and the semi-cylindrical fixed protrusion 1013c provided on the side surface of the fixed base portion 1013b rotates. The inner side portion (inner side surface) of the moving portion 1011a is slid downward, and the fixed claw 1013a is retracted downward.
Here, since the semi-cylindrical protrusions such as the base protrusion 1013f and the fixed protrusion 1013c are provided in the movable part, the fixed claw 1013a can be smoothly inserted and removed from the arc-shaped groove provided in the wiring device 1007. It has a structure.

  Note that the pressing portion 1013d of the lock member 1013 is a lock opening 1011b of the rotation portion 1011a in a state where the lock member 1013 is housed in the root portion of the hook blade 1012 in the rotation portion 1011a of the hook blade holding member 1011. Is exposed. When removing the LED lighting device main body 1001 from the ceiling surface 1005, it is necessary to press the pressing portion 1013d of the locking member 1013 to unlock the hooking blade 1012. However, the pressing portion 1013d is transparent like the rotating portion 1011a. And this push part 1013d is hard to visually recognize. Therefore, the lock member 1013 is colored in a color that is easily visually recognized with respect to the transparent body, for example, orange with low transparency.

(3.-6 Arrangement of LED board and lighting circuit board)
The LED board 1024 on which the LED element 1025 is mounted and the lighting circuit board 1023 for lighting the LED element 1025 are shown in FIG. It is arranged on the floor side. The LED substrate 1024 is disposed on the LED substrate holding portion 1021d of the base member 1021 adjacent to the outside of the hooking blade holding member 1011. The lighting circuit board 1023 is arranged on the outer peripheral edge side rib 1211b of the base member 1021, and the LED board holding part 1021d and thus the LED board 1024 so as not to overlap the LED board 1024, that is, the LED board holding part 1021d. It is the structure provided in the outer peripheral side of the base member 1021 rather than. Thereby, since the LED substrate 1024 is disposed near the center portion of the base member 1021, illumination with uniform brightness can be obtained without darkening the center portion. Further, the lighting circuit board 1023 can be divided and arranged on a plurality of boards, and the ceiling light 1100 can be made compact to realize cost reduction.

(3.-7 LED board)
As shown in FIGS. 28, 29, 39, and 40, there are a plurality of LED substrates 1024, and are arranged around the base member opening 1021 a in the base member 1021. More specifically, the plurality of LED substrates 1024 are fixed to the arrangement surface 1211c of the LED substrate holding portion 1021d using fixing means such as screws and pins. The LED substrate 1024 has a long shape having a predetermined width dimension. Here, the LED substrate 1024 has a rectangular shape, and each end in the longitudinal direction is chamfered in a triangular shape. That is, the LED substrate 1024 has a shape close to an arc shape. Here, the plurality of LED substrates 1024 are arranged in a single annular shape surrounding the base member opening 1021a. Specifically, the six LED boards 1024 are arranged so as to be connected by the board connection lines, and are formed in a substantially circle shape (which is close to a hexagonal shape, but has a substantially circular shape as a whole). In this state, the LED board holding portion 1021d of the base member 1021 is disposed. This LED substrate 1024 is made of a glass composite substrate (CEM-3) wired on one side, and an LED element 1025 is mounted on one side. In addition, what mounted the LED element 1025 on the LED board 1024 may also be called an LED board.
By using a plurality of LED substrates 1024 in this way, thermal contraction can be absorbed between the LED substrates 1024 adjacent in the circumferential direction, and deformation of the substrate can be suppressed. In addition, since the LED substrate 1024 has a triangular end in the longitudinal direction, a gap between adjacent LED substrates 1024 can be reduced when arranged in an annular shape. Further, since the end of the LED substrate 1024 in the longitudinal direction has a triangular shape, the LED element 1025 can be mounted in the vicinity of the apex angle of the end of the LED substrate 1024 in the longitudinal direction. Thereby, when the plurality of LED substrates 1024 are arranged in a ring shape, the interval between the LED elements 1025 mounted at the extreme ends in the longitudinal direction of the adjacent LED substrates 1024 can be reduced.
As shown in FIG. 40, as described above, the board connection line (lead wire 1024b) is used for the wiring between the LED boards 1024. Adjacent LED boards 1024 are formed by connecting lead wires 1024b connected to connectors 1024a provided on one LED board 1024 to the other LED board 1024 by soldering. That is, the plurality of LED substrates 1024 are connected to each other by a lead wire 1024b whose one end is connected to one LED substrate 1024 and a connector 1024a which is installed on the other LED substrate 1024 and connected to the other end of the lead wire 1024b. Has been. Thereby, it is possible to easily connect the LED substrates 1024 at the time of assembly, to reduce the number of assembly steps and the number of parts, and to realize cost reduction. The substrate wiring for connecting to the lighting circuit substrate 1023 has the same connection configuration. Further, these LED substrates 1024 are connected to each other on the outer peripheral side of the LED lighting device main body 1001 in the LED substrate 1024 as shown in FIGS. 39 and 40. For this reason, the wiring for connecting the LED substrates 1024 can emit light widely and uniformly without hindering light emission from the LED element 1025.
Further, as shown in FIGS. 39 and 40, the wiring between the LED substrates 1024 is performed in a region away from the row on which the plurality of LED elements 1025 are mounted. For this reason, the LED element 1025 can be mounted up to the vicinity of the apex angle of the end portion of the LED substrate 1024 in the longitudinal direction. Thereby, when the plurality of LED substrates 1024 are arranged in a ring shape, the interval between the LED elements 1025 positioned at the extreme ends in the longitudinal direction of the adjacent LED substrates 1024 can be reduced.

  In the illustrated embodiment, LED elements 1025 are linearly arranged on the LED substrate 1024 as shown in FIG. However, the number and arrangement of the LED elements 1025 are not particularly limited, and the LED elements 1025 may be arcuate rather than linear, and may be arranged to form a staggered relationship. The LED substrate 1024 is disposed on the LED substrate holding portion 1021d provided so that the center side of the base member opening portion 1021a is inclined toward the floor surface when the LED lighting device main body 1001 is attached to the ceiling surface 1005. . Thereby, the LED substrate 1024 can constitute a substrate in which the translucent cover 1003 has uniform brightness. The LED substrate 1024 is fixed to the base member 1021 with a synthetic resin pin or the like. By directly fixing the back surface of the LED substrate 1024 on which the LED element 1025 is not mounted to the LED substrate holding portion 1021d of the base member 1021 and thermally coupling it, the heat generated from the LED element 1025 passes through the LED substrate 1024. Thus, heat can be radiated to the base member 1021. Thereby, the fall of the luminous efficiency of LED element 1025 and the lifetime shortening can be suppressed now. In addition, in LED board 1024, light extraction efficiency can be improved further by bonding a highly reflective sheet or applying a highly reflective resin to the LED element mounting surface side.

(3.-8 LED element)
As the LED element 1025 mounted on the LED substrate 1024, various known LED elements can be used. In this embodiment, a high-luminance type LED element that emits white light for illumination and a high-luminance type LED element that emits daylight color are used to form a ceiling light 1100 that can be toned.

(3.-9 Lighting circuit board)
28, 29, 39 and 40, the lighting circuit board 1023 converts the alternating current supplied from the wiring device 1007 through the hooking blade 1012 into a direct current and supplies it to the LED board 1024. In addition, on the front side of the outer peripheral edge side rib 1211b of the base member 1021, an arc shape is disposed around the LED substrate 1024. The lighting circuit board 1023 includes lighting boards 1023A and 1023B, and circuit components 1023a and 1023b that are mounted on the lighting boards 1023A and 1023B and constitute circuit functions. Note that the lighting circuit is configured by mounting circuit components 1023a and 1023b on the lighting substrates 1023A and 1023B and connecting them by a wiring pattern formed on the lighting substrates 1023A and 1023B.
Specifically, as shown in FIG. 40, the lighting circuit board 1023 is configured by a paper phenol board (FR-1) in which circuit components 1023a and 1023b are wired on one side. There may be one lighting substrate 1023A, 1023B, or a plurality of lighting substrates. There are two substrates here. When viewed from the floor surface side, the lighting circuit board 1023 is arranged along the entire outer circumference side of the annular LED board 1024 and along a part of the outer circumference side. Here, the lighting circuit board 1023 is arranged in a partial region along the outer peripheral side. Since the lighting substrates 1023A and 1023B have an arc shape when viewed from the floor surface side, they can be along the LED substrate 1024. The back surface of the lighting substrate 1023A, 1023B on which the circuit components 1023a, 1023b are not mounted is brought into contact with the front surface side of the base member 1021 via an insulating sheet, so that the heat generated from the lighting circuit substrate 1023 is transferred to the base member 1021. Efficiently dissipates heat. The circuit components 1023a and 1023b constituting the lighting circuit board 1023 include various diodes, capacitors, transformers, ICs, resistors for performing circuit functions such as overcurrent protection, noise cut, rectification, smoothing, and dimming control. Known electronic components such as can be used.

  The lighting circuit board 1023 is connected to the power line 1014 from the wiring groove 1011e of the hooking blade holding member 1011. In this case, as shown in FIGS. 39 and 40, the power line 1014 is wired across a portion of the LED substrate 1024 where the LED element 1025 arranged in a substantially annular shape is not mounted. That is, the power line 1014 is arranged between the LED substrates 1024 adjacent to each other along the circumferential direction (including the end portion of the adjacent LED substrate 1024) and passing through the back side (base member 1021 side) of the LED substrate 1024. ing. As shown in FIGS. 39 and 40, the wiring is disposed across the LED substrate 1024 on the surface of the LED substrate 1024 opposite to the mounting surface on which the LED element 1025 is mounted. Accordingly, when viewed from the floor side, even if the lighting circuit board 1023 is provided outside the LED board 1024, the light emission from the LED element 1025 is not hindered by the wiring for supplying power, so that it is widely and uniformly. And at the same time no unnatural shadows occur. The power line 1014 is sandwiched between the LED board 1024 and the base member 1021. For this reason, the other member for fixing the power line 1014 becomes unnecessary. In addition, since the edge part of the longitudinal direction of LED board 1024 is triangular shape, the space | interval between adjacent LED boards 1024 can be made small, and the power line 1014 can be hold | maintained reliably.

  In this case, particularly, as shown in FIG. 39, the wiring can be installed along the radial reinforcing rib 1021 f provided on the base member 1021. That is, the power line 1014 is disposed so as to be accommodated in the radial rib 1021f that is recessed on the ceiling surface 1005 side. Specifically, as shown in FIG. 39, the power line 1014 is installed along the radial rib 1021f of the base member 1021, thereby straddling the surface of the LED substrate 1024 where the LED element 1025 is not mounted. be able to. As a result, the hook blade holding member 1011 and the lighting circuit board 1023 can be wired by using the radial ribs 1021f for reinforcing the strength such as the recesses provided in the base member 1021 as a wiring storage part. Therefore, stable and appropriate wiring can be performed without newly providing a wiring member, and cost reduction can be realized. Further, by using the radial rib 1021f, the power line 1014 can be arranged on the back side of the LED board 1024 without changing the posture of the LED board 1024 (without the LED board 1024 being bent by the power line 1014). .

In the direct current supply from the lighting circuit board 1023 to the LED element 1025, as shown in FIG. 40, the connector 1023c is fixed to the lighting circuit board 1023, and the lead wire 1023d connected to the connector 1023c is connected to the LED board 1024. By connecting with solder, the lighting circuit board 1023 and the LED board 1024 are electrically connected. At this time, as shown in FIG. 39, the lead wire 1023d is connected to the center side of the LED substrate 1024 through the back surface of the LED substrate 1024 on the LED element 1025 mounting side using the radial rib 1021f. This prevents the light emitted from the LED element 1025 from being reflected on the translucent cover 1003 without hitting the lead wire 1023d. Further, by using the radial rib 1021f, the lead wire 1023d can be disposed on the back side of the LED substrate 1024 without changing the posture of the LED substrate 1024. The lead wire 1023d is sandwiched between the LED substrate 1024 and the base member 1021. For this reason, another member for fixing the lead wire 1023d becomes unnecessary. Therefore, the connection with the LED substrate 1024 at the time of assembly can be facilitated, and the number of components can be reduced. However, the board connection between the lighting circuit board 1023 and the LED board 1024 is not limited to this form. In addition, for example, the inner circumference side of the lighting circuit board 1023 and the LED board 1024 of the LED lighting device main body 1001 can be used. The outer peripheral side can also be connected without straddling the LED substrate 1024.
Further, as shown in FIG. 39 and FIG. 40, the wiring between the LED board 1024 and the lighting circuit board 1023 is a region away from the row in which the LED elements 1025 are mounted (here, the LED elements 1025 are mounted). It is performed on the base member opening 1021a side than the row). For this reason, the LED element 1025 can be mounted up to the vicinity of the apex angle of the end portion of the LED substrate 1024 in the longitudinal direction. Thereby, when the plurality of LED substrates 1024 are arranged in a ring shape, the interval between the LED elements 1025 mounted at the extreme ends in the longitudinal direction of the adjacent LED substrates 1024 can be reduced.

In the arrangement of the circuit components 1023a and 1023b on the lighting circuit board 1023, a short circuit component 1023a is provided at the center side (LED board 1024 side) of the lighting circuit board 1023, and a tall circuit component is provided outside the lighting circuit board 1023. 1023b are respectively arranged. As a result, the height of the circuit component 1023b is higher than the height of the circuit component 1023a.
The lighting substrates 1023A and 1023B have an arc shape as shown in FIGS. The lighting substrate 1023A as the main substrate is connected to the power line 1014 and the lead wire 1023d at each end in the circumferential direction. For this reason, the separation distance between the power line 1014 and the lead wire 1023d is increased, and the electrical safety can be improved. In particular, the power line 1014 and the lead wire 1023d are arranged at portions facing each other with the base member opening 1021a (center thereof) of the base member 1021 interposed therebetween. For this reason, the contact between the power line 1014 and the lead wire 1023d can be eliminated.
In addition, the height of the circuit components 1023a and 1023b is a 1/2 beam angle of light emitted from the LED element 1025 (indicating how light spreads (light distribution), and 1/2 of the illuminance directly below the light source (maximum luminous intensity). It is necessary to arrange so that the emitted light of an angle between a point connecting the light source and the center of the light source and the vertical line of the light source center is not irradiated to the circuit components 1023a and 1023b. As a result, the translucent cover 1003 has no shadow and uniform brightness.

In addition, it is possible to further improve the light extraction efficiency and prevent the occurrence of shadows by pasting a highly reflective sheet or applying a highly reflective resin on the circuit component mounting surface side of the lighting substrates 1023A and 1023B. it can.
Further, the outer portion of the LED board 1024 in the base member 1021 can be used as a region where the lighting circuit board 1023 is disposed. For this reason, the lighting circuit board 1023 can be divided into a plurality of boards, and the ceiling light 1100 can be further downsized to reduce the cost. As the division of the lighting circuit board 1023 at this time, it is possible to divide the input circuit portion and the output circuit portion, or to divide the dimming circuit and the toning circuit so that they can be selected depending on the model to be mounted. .
Further, since the entire lighting circuit board 1023 is protected by a protective cover 1026 as shown in FIGS. 48 and 49, the cover normally provided on the lighting circuit board 1023 can be omitted, and the number of parts can be reduced. Can reduce costs.

(3.-10 Protective cover)
The protective cover 1026 is attached to the base member 1021. The protective cover 1026 is made of a flame-retardant synthetic resin material having transparency such as polycarbonate (PP), and its shape is continuous in a donut shape as shown in FIGS. 28 to 30, 41, and 42. When the ring of the hollow pipe is cut along a virtual plane that bisects an ellipse when the donut is viewed from the side (when viewed from a direction orthogonal to the central axis of the hollow portion of the donut). It is similar to the shape of the lower half (that is, the cross section has a substantially half-pipe shape), and the cut surface side is a fixed side to the base member 1021 (FIG. 29). Note that the axis of the substantially half pipe is the same as the axis of the virtual uncut circular pipe.
In other words, the protective cover 1026 is an imaginary line segment that passes through the center of a circle existing at a position away from the virtual rotation axis and is orthogonal to the virtual rotation axis with respect to the virtual rotation axis passing through the center of the base member opening 1021a. A hollow semi-doughnut shape is formed by rotating an approximate semicircle having a shape close to that of the lower half of the circle. The axis of the half pipe is obtained by rotating the center of the approximate semicircle with respect to the virtual rotation axis.
A cross-section of this ring-shaped protective cover 1026 when cut along a virtual vertical plane including the virtual central axis of the ring (this cross-section is also referred to as a “cross section”) is shown in FIG. As shown in FIG. 42, the two convex arcs are spaced apart and arranged in parallel. When the protective cover 1026 is attached to the base member 1021, the inside of the above-described downward convex arc, that is, the inner space of the ring-shaped half pipe whose upper surface is opened in an actual three-dimensional structure is mounted on the base member 1021. Both the circuit board 1023 and the LED board 1024 are covered together from below, and the light emission direction side surfaces of the lighting circuit board 1023 and the LED board 1024 are covered. That is, the protective cover 1026 has a dome portion 1026n that protrudes in a dome shape (corresponding to the above-mentioned “downwardly convex arc”) in the light emitting direction in the cross section of the half pipe. In the cross section of the half pipe, the side near the virtual rotation axis of the rotating body in the dome portion 1026n is defined as the inner circumferential side, and the side away from the virtual rotation axis is defined as the outer circumferential side. The protective cover 1026 has a hooking blade fixing portion 1026h for fixing the protective cover 1026 to the hooking blade holding member 1011 inside the inner peripheral edge of the dome portion 1026n in the cross section of the half pipe. The protective cover 1026 has a base member fixing portion (base member fixing hole 1026f) for fixing the protective cover 1026 to the base member 1021 outside the outer peripheral edge of the dome portion 1026n.
Accordingly, both the lighting circuit board 1023 and the LED board 1024 can be covered without being exposed from the light emitting direction side of the LED element 1025, and at the same time, separate covers are prepared for the lighting circuit board 1023 and the LED board 1024. Since there is no need to cover each of them, the increase in the number of parts is suppressed, and the structure is highly effective in reducing the cost.

The protective cover 1026 is composed of a plurality of protective cover pieces. Here, the protective cover 1026 includes two protective cover pieces 1026A and 1026B. Specifically, as shown in FIG. 47, the protective cover 1026 includes two protective cover pieces 1026A and 1026B each having an arc (semicircle) half pipe shape obtained by further dividing the ring-like half pipe into two equal parts. The two protective cover pieces 1026A and 1026B are combined to form an integral protective cover 1026 arranged in a ring shape. These two protective cover pieces 1026A and 1026B are substantially the same in material, external shape, and appearance, and there is no possibility that mixing of parts such as left and right members may be mistaken and errors in the mounting direction may occur.
The protective cover pieces 1026 </ b> A and 1026 </ b> B extend in the longitudinal direction of the LED substrate 1024, and have a circular arc shape in which a cross-sectional shape orthogonal to the extending direction extends in the light emitting direction of the LED element 25.
Since the protective cover pieces 1026A and 1026B have the same configuration, they are manufactured with a single mold. This leads to cost reduction. Here, the two protective cover pieces 1026A and 1026B have the same configuration, but may have different configurations. Further, the protective cover pieces 1026A and 1026B have a shape such that the protective cover 1026 is divided approximately evenly. However, the protective cover pieces 1026A and 1026B may have a shape such that the protective cover 1026 is divided unevenly. The protective cover may be composed of a plurality of three or more protective cover pieces.
The protective cover pieces 1026A and 1026B have protective cover connecting portions 1026b at opposite ends. The protective cover connecting part 1026b of the protective cover piece 1026A and the protective cover connecting part 1026b of the protective cover piece 1026B are connected by overlapping. A portion where the protective cover connecting portions 1026b overlap is used as a connecting portion as in the first embodiment.
As shown in FIGS. 47 to 49, the two protective cover pieces 1026 </ b> A and 1026 </ b> B are connected to each other by a protective cover connecting and fixing portion 1026 t and fixed to the base member 1021. The base member 1021 may be attached to the base member 1021 one by one in order, and operations such as alignment are easy.
As shown in FIGS. 47 to 52, the protective cover connecting / fixing portion 1026t includes a protruding fitting piece 1026u provided at one end in the circumferential direction of the protective cover pieces 1026A and 1026B and the other in the circumferential direction. It has a fitting groove 1026v that is provided at the end and fits with the fitting piece. That is, the fitting piece 1026u of the protective cover piece 1026A is fitted with the fitting groove 1026v of the protective cover piece 1026B, and the fitting piece 1026u of the protective cover piece 1026B is fitted with the fitting groove 1026v of the protective cover piece 1026A. Thereby, the two protective cover pieces 1026A and 1026B are connected.
A through hole 1026w that penetrates the fitting piece 1026u and the fitting groove 1026v is provided in a state where the fitting piece 1026u and the fitting groove 1026v are fitted, and a protective cover is provided by a screw that passes through the through hole 1026w. 1026 is fixed to the base member 1021.

As shown in FIGS. 41, 48, and 52, the protective cover 1026 arranged in a ring shape has an LED substrate with the protective cover 1026 as a boundary when mounted on the ceiling light 1100 (LED lighting device). A communication portion is provided that allows the space on the 1024 side and the space on the translucent cover 1003 side to communicate with each other. This communication part is for cooling the LED element 1025 using an air flow. There are two types of communication portions: an inner peripheral side communication portion provided on the inner peripheral side of the protective cover 1026 and an outer peripheral side communication portion provided on the outer peripheral side of the protective cover 1026. Specifically, as shown in FIG. 41, FIG. 42 and FIG. 52, the communication portion includes one or more through holes 1026k formed along the inner peripheral edge at the inner peripheral end of the protective cover 1026, and The protective cover 1026 includes one or more notches 1026m formed along the outer peripheral edge at the outer peripheral end portion.
Here, the inner peripheral side communication portion is a through hole 1026k, and the outer peripheral side communication portion is a notch 1026m. However, it is only necessary that the inner side of the protective cover 1026 and the outer side of the protective cover 1026 can communicate with each other with the protective cover 1026 attached to the base member 1021, and the forms of the inner peripheral side communication portion and the outer peripheral side communication portion are particularly limited. is not. For example, the inner peripheral side communication portion and the outer peripheral side communication portion may be configured by through holes, may be configured by notches, the inner peripheral side communication portions are notched, and the outer peripheral side communication portions are by through holes. Each may be configured.

Specifically, as shown in FIGS. 41 and 52, there are a plurality of through holes 1026k (specifically, eight in the illustrated embodiment, as shown in FIG. 41), and the inner peripheral edge. Are formed at predetermined intervals. Each of these through holes 1026k has a substantially rectangular shape along the inner peripheral edge of the ring-shaped protective cover 1026 as viewed from the light exit surface side (more strictly, slightly curved along the inner peripheral edge of the protective cover 1026). It is formed by penetrating part of the protective cover 1026 so as to open in a circular arc shape). Therefore, air can convect between the space on the LED substrate 1024 side and the space on the translucent cover 1003 side with the protective cover 1026 as a boundary.
The plurality of through holes 1026k do not necessarily have to be provided at equal intervals, and do not necessarily have to be the same size and shape of the through holes 1026k. The protective cover 1026 can be attached to the hooking blade holding member 1011 The arrangement and size can be set in consideration of the above. The protective cover 1026 has a flat portion (hooking blade fixing portion 1026h) parallel to the flat plate surface of the base member 1021 on the inner peripheral side, and this flat portion is screwed to the base member 1021 with a screw. As shown in FIGS. 47 and 49, the position of the screw is between the through holes 1026k adjacent in the circumferential direction.

  On the other hand, as shown in FIGS. 41 and 52, there are a plurality of notches 1026m (specifically, 12 in the illustrated embodiment), and a part of the outer peripheral edge is notched. Thus, they are provided at a predetermined interval. These cutouts 1026m are cut out in a substantially rectangular shape as seen from the side surface direction of the ceiling light 1100, as shown in FIG. Air can be convected between the space on the side of the protective cover 1003. The plurality of notches 1026m are not necessarily installed at equal intervals, and are not necessarily all the same size and shape of the notches 1026m, and the protective cover 1026 can be attached to the base member 1021. The arrangement and size can be set in consideration. In addition, although the communication part (outer peripheral side communication part) formed in the outer peripheral part of the protective cover 1026 is the notch 1026m in the illustrated embodiment, as described above, the outer peripheral part is not necessarily formed. It is not limited to the communication part made, but it can also be a through hole formed in a hole shape, like the inner peripheral edge side of the protective cover 1026.

By forming these communication portions, when the LED element 1025 on the LED substrate 1024 mounted on the base member 1021 emits light and generates heat, the temperature of the air inside the protective cover 1026 rises, for example, the inner circumference It flows out to the outer space of the protective cover 1026 from the through hole 1026k which is a communicating portion provided at the end. Instead, the low-temperature air in the outer space of the protective cover 1026 flows from the notch 1026m that is a communication portion provided at the outer peripheral edge. As a result, the air that has risen in temperature and has flowed into the outer space of the protective cover 1026 is cooled through the translucent cover 1003 and the base member 1021, and again from the outer peripheral edge of the protective cover 1026 through the notch 1026 m. Return to the inner space. The LED element 1025 is efficiently cooled by the airflow that smoothly circulates between the inner space and the outer space of the protective cover 1026, and deterioration of the operating life can be suppressed.
As described above, the through hole 1026k formed in the inner peripheral end portion of the protective cover 1026 and the notch 1026m formed in the outer peripheral portion bear a cooling function (heat dissipation) for cooling the LED element 1025. In addition, the heat generated by the circuit components 1023a and 1023b of the lighting circuit board 1023 can be released by the circulating air flow in the same manner as the heat generation of the LED element 1025.

  In addition, each through-hole 1026k and each notch 1026m which are these communicating parts have the magnitude | size and shape which cannot let a finger penetrate. Specifically, in each of the through holes 1026k and the notches 1026m that open in a substantially rectangular shape in the illustrated embodiment, the length of the rectangular short side (the width in the transverse direction of the hole or the height of the notch) is set. It is set to 4 mm (the length of the long side of the rectangular shape is not particularly limited unless a finger enters). If the length of the short side is too large, the operator's fingers may enter the opening and come into contact with the LED element 1025, the lead wire 1024b, or the like when the LED lighting device main body 1001 is detached from the ceiling surface 1005. Because there is. Accordingly, it is desirable that the lengths of the rectangular short sides of the through holes 1026k and the notches 1026m that open in a substantially rectangular shape do not exceed 12 mm at the maximum. In addition, the length of the rectangular short side of each through-hole 1026k and each notch 1026m opening in a substantially rectangular shape is preferably more than 2 mm in consideration of the air flow. Further, since the communication portion exists at the inner peripheral end portion and the outer peripheral end portion of the protective cover 1026, even if a foreign object is inserted through the through hole 1026k or the notch 1026m, the LED element 1025, the LED substrate 1024, and the lighting circuit substrate. The risk of foreign matter reaching 1023 can be reduced.

The through hole 1026k is formed along the inner periphery of the protective cover 1026. However, as shown in FIG. 41, the openings of the through holes 1026k are emitted from all the LED elements 1025 covered by the protective cover 1026. By arranging the light beam to be located closer to the base member 1021 side (ceiling surface 1005 side) than the emitted light having a half beam angle of light, a situation in which the shadow of the through hole 1026k is reflected on the translucent cover 1003 is prevented. be able to.
Similarly, the opening of the notch 1026m formed along the outer peripheral edge portion of the protective cover 1026 is, as shown in FIG. 41, more than the emitted light having a 1/2 beam angle of the light emitted from the LED element 1025. By arranging so as to be located on the base member 1021 side (ceiling surface 1005 side), it is possible to prevent the shadow of the notch 1026m from appearing on the translucent cover 1003.

  In the illustrated embodiment, the through-hole 1026k has a substantially rectangular opening and is formed at a total of eight locations, but is positioned closer to the base member 1021 than the 1/2 beam angle described above, and There are no particular restrictions on the shape, arrangement, and number of arrangements as long as the size and shape of the finger cannot be inserted. For example, a polygonal shape such as a circular shape (including any of a perfect circle or an ellipse) or a triangle. A large number of through holes 1026k having a plurality of openings can be arranged in a line along the inner periphery. Similarly, if the notch 1026m also satisfies the conditions that it is positioned closer to the base member 1021 than the 1/2 beam angle described above and has a size and shape that prevents insertion of a finger, the shape, arrangement, etc. There is no limit. In the state where the protective cover 1026 is fixed to the base member 1021, as long as the mechanical strength of the protective cover 1026 can be sufficiently secured, at least one through hole 1026k is formed within the range satisfying the above condition. The larger the total area of the openings of the one or more notches 1026m formed, the lower the fluid resistance against the air flow described above, and the cooling effect of the LED element 1025 is improved. The outer peripheral side communication portion exists on an imaginary line segment that connects the inner peripheral side communication portion and the center of the base member opening 1021a. Thereby, the flow path of air becomes linear, and fluid resistance can be lowered.

The protective cover 1026 is composed of a plurality (two in this case) of protective cover pieces 1026A and 1026B in a state of having a connecting portion in which the protective cover connecting portions 1026b of the protective cover pieces 1026B and 1026A are overlapped with each other. Has been.
In the two protective cover pieces 1026A and 1026B, the connecting portion formed by the two protective cover connecting portions 1026b is not merely abutting (overlapping), and one of the two protective cover pieces 1026A and 1026B is protected by one of the protective cover pieces 1026A and 1026B. The upper half of the plate thickness of the protective cover 1026 is cut (formed in a step shape) at the end, and the other protective cover pieces 1026B and 1026A that engage with one of the cut ends of the upper half. The ends of the protective cover 1026 are formed into a shape in which a substantially lower half of the plate thickness of the protective cover 1026 is cut (so-called “phase-out” processing in terms of architectural terms that join wood), and the protective cover connecting portion 1026b is formed by these ends. Is formed. Accordingly, the connecting portions in the state where the arc-shaped end portions (in the cross section) of the two protective cover pieces 1026A and 1026B are connected to each other in a ring shape are the end portions of the upper half cut and the lower half cut. When the cut portions are fitted together, the two members are smoothly connected while maintaining substantially the same thickness as that of the protective cover 1026 other than the protective cover connecting portion 1026b (connecting portion). .
Here, as the structure of the connecting portion, the end portions of the protective cover pieces 1026A and 1026B are cut. However, for example, the end portion of one protective cover piece is left as it is, and the end portion of the other protective cover piece is It can also be set as the structure extended along the upper surface or lower surface of the edge part of one protective cover piece.
As shown in FIGS. 42 and 49, particularly FIG. 42, in the cross section, the height of the top portion of the connecting portion is the height of the top portion other than the connecting portion on the basis of the flat surface of the base member 1021. It is lower than this. That is, the distance between the top of the connection portion and the LED substrate 1024 (or the base member 1021) is shorter than the distance between the top of other portions other than the connection portion and the LED substrate 1024 (or the base member 1021).
The height of the top portion of the connecting portion is based on the height of the top portion of the other portions except for the region 1026p and the connecting portion where the height of the top portion described later gradually decreases with reference to the starting point of the arc shown in FIG. About 0.38. Further, the height of the top of the connection portion is about 0.53 of the height of the top of the portion excluding the region 1026p and the connection portion, based on the base member 1021 shown in FIG.
Each protective cover piece 1026A, 1026B has a region 1026p in which the height of the top portion gradually decreases as it approaches the protective cover connecting portion 1026b from a portion closer to the end than the central portion in the circumferential direction when viewed from the floor side. Have. As shown in FIG. 30, one region 1026p has an angle of about 30 degrees with respect to the center of the protective cover opening 1026a (the hook holding portion 1010). That is, the range of 60 degrees across the connecting portion is lower than the height of the top of the other portion. Thereby, it can suppress that a connection part is reflected on the translucent cover 1003 as a shadow.
Note that the tall circuit components 1023b and the like are arranged in a region corresponding to a portion excluding the region 1026p where the height of the top portion gradually decreases and the connecting portion.

As shown in FIG. 41, a protective cover opening 1026a is provided at the center of the protective cover 1026 connecting the two protective cover pieces 1026A and 1026B in plan view. At the edge of the protective cover opening 1026a, a pipe-shaped hook holding and fixing guide 1026j extends in a direction (upward) to be attached to the base member 1021.
The pipe-shaped hook holding and fixing guide 1026j is provided such that its inner peripheral surface comes into contact with the outer peripheral surface of the inner cylinder 1011r (FIG. 34) of the hooking blade holding member 1011. The shape of the inner periphery of the hook holding and fixing guide 1026j and the outer shape of the inner tube 1011r of the hooking blade holding member 1011 are circular. For this reason, the protective cover 1026 can be rotated along the inner cylinder 1011r, and the protective cover 1026 can be easily positioned with respect to the hooking blade holding member 1011.
As shown in FIG. 41, the hook holding and fixing guide 1026j has a groove (here, “U” shape) at two opposing positions with respect to the center of the pipe (also the center of the protective cover opening 1026a). Is provided). One is a power line wiring groove 1026g serving as a recess for passing the power line 1014 to the lighting circuit board 1023, and a protective cover position pin 1011s (FIG. 34) of the hooking blade holding member 1011 is fitted into the other groove. The two groove shapes are similar, and there is no distinction as to which one is the power line wiring groove 1026g serving as a recess for passing the power line 1014 to the lighting circuit board 1023.
The groove formed in the hook holding and fixing guide 1026j is formed across the protective cover pieces 1026A and 1026B in the protective cover connecting portion 1026b of the two protective cover pieces 1026A and 1026B. For this reason, the protective cover pieces 1026A and 1026B are cut out in the half of the “U” shape.
When the protective cover 1026 is attached to the base member 1021 to which the hooking blade holding member 1011 is attached, protection is performed so that the inner cylinder 1011r (FIG. 34) of the hooking blade holding member 1011 is inserted inside the hooking holding fixing guide 1026j. The cover 1026 and the base member 1021 are aligned, then the protective cover 1026 is rotated, and the wiring groove 1011e of the hooking blade holding member 1011 (see FIG. 34) is inserted into the U-shaped groove of the hooking holding and fixing guide 1026j. ), Or when the protective cover position pin 1011s is fitted, the protective cover 1026 can be aligned with the correct fixing position of the base member 1021.
As shown in FIG. 41, a power line wiring groove 1026g serving as a recess for passing the power line 1014 to the lighting circuit board 1023 is U-shaped for passing the power line 1014 for sending power from the hooking blade holding member 1011 to the lighting circuit board 1023. It is formed as a groove.

An annular hooking blade fixing portion 1026h (FIG. 41) is provided outside the hooking holding and fixing guide 1026j when viewed from the base member 1021 side. After confirming that the protective cover 1026 is aligned with the correct fixing position of the base member 1021 by the above-described procedure (an example), the protective cover 1026 is inserted into the hook fixing hole 1026e provided in the hooking blade fixing portion 1026h. The base member 1021 is fixed with screws. The upper end of the protective cover outer edge portion 1026c (FIG. 42) of the protective cover 1026 has a flat ring shape except for the notch 1026m, and is a base member fixing hole 1026f provided in a total of eight locations. It is fixed to the surface of the outer peripheral edge rib 1211b of the base member 1021 by screws. At this time, the upper end surface is in contact with the base member 1021.
As shown in FIG. 49, the protective cover 1026 covers the LED board 1024 and the lighting circuit board 1023 in a state where the LED board 1024 and the lighting circuit board 1023 are not exposed to the outside of the protective cover 1026. When attaching to the wiring device 1007, the electrical safety of the installation operator can be achieved, and the situation where the installation operator touches the LED element 1025 or the like to deteriorate the lighting performance can be avoided.

The translucent cover 1003 is attached to the protective cover 1026. Specifically, as can be seen from FIG. 47, the rear translucent cover 1031 (FIG. 43) of the translucent cover 1003 is fitted and fixed at four locations on the outer peripheral end of the protective cover 1026. A rear translucent cover fitting portion 1026d (FIG. 47) is provided. When the rear translucent cover 1031 is attached to the protective cover 1026, the rear translucent cover fitting portion 1026d and the protective cover fitting portion 1031a of the rear translucent cover 1031 are aligned, and the rear translucent cover 1031 is aligned. By rotating the cover 1031 around the center of the protective cover opening 1026a, the rear translucent cover fitting portion 1026d and the protective cover fitting portion 1031a can be fitted.
The protective cover 1026 has a plurality (four in this case) of rear translucent cover fitting portions 1026d at intervals in the circumferential direction. As shown in FIG. 52, the rear translucent cover fitting portion 1026d has a protruding portion 1026r that extends outward from the outer peripheral end portion in a direction parallel to the flat plate surface of the base member 1021 and extends in the circumferential direction. And a restricting portion 1026s extending vertically from one end in the circumferential direction of the overhang portion 1026r. Here, one end in the circumferential direction of the overhanging portion 1026r is an end existing on a side to be rotated when the rear translucent cover 1031 is attached to the protective cover 1026 (which is a traveling side).
The rear translucent cover 1031 has an annular shape when viewed from the floor surface side, and is spaced apart in the circumferential direction corresponding to the position of the rear translucent cover fitting portion 1026d as shown in FIG. A plurality of (four in this case) protective cover fitting portions 1031a are provided. The rear translucent cover 1031 has a cylindrical shape (here, a cylindrical shape). The protective cover fitting portion 1031a is constituted by an overhanging portion that extends inward from the inner peripheral surface of the cylindrical upper end portion in a direction parallel to the flat plate surface of the base member 1021 and extends in the circumferential direction. Yes.
The interval between the rear translucent cover fitting portions 1026d adjacent in the circumferential direction is larger than the circumferential length of the protective cover fitting portion 1031a of the rear translucent cover 1031. The rotational direction of the rear translucent cover 1031 is a direction toward the restriction portion 1026s of the rear translucent cover fitting portion 1026d.
In a state where the rear translucent cover 1031 is attached to the protective cover 1026, the lower surface of the protective cover fitting portion 1031a of the rear translucent cover 1031 is on the upper surface of the rear translucent cover fitting portion 1026d of the protective cover 1026. Engagement (contact).
The protective cover fitting portion 1031a of the rear translucent cover 1031 is on the lower surface of the tip portion in the rotation direction of the overhanging portion 1026r (the portion close to the regulating portion 1026s of the protective cover 1026 when fitted). It has a recess 1031d that is recessed into the base member 1021 side. At least one rear translucent cover fitting portion 1026d of the protective cover pieces 1026A and 1026B corresponds to the recess 1031d of the protective cover fitting portion 1031a when the rear translucent cover 1031 is attached to the protective cover 1026. The part has an elastic piece 1026q that can be elastically deformed in the vertical direction. In general, the elastic piece 1026q projects upward (on the base member 1021 side). When the rear translucent cover 1031 is attached to the protective cover 1026, the elastic piece 1026q of the protective cover 1026 engages with the recess 1031d of the rear translucent cover 1031. Thereby, the falling off of the rear translucent cover 1031 from the protective cover 1026 is suppressed.

The protective cover 1026 has a rear translucent cover fitting portion 1026d along the outer peripheral edge of the dome portion 1026n when viewed from the light emitting direction. Further, the dome portion 1026n has a gentle slope from the dome-shaped top portion to the outer peripheral edge in the cross section of the half pipe.
Further, when the rear translucent cover 1031 is viewed from the floor surface side, the inner peripheral edge shape of the protective cover fitting portion 1031a has an arc shape. The arc-shaped radius and center substantially coincide with the radius and center of the outer peripheral edge of the dome portion 1026n.
In this case, the protective cover 1026 has a cover guide portion that slides the translucent cover 1003 and guides it to a predetermined position. That is, in the illustrated embodiment, specifically, the cover guide portion is, as shown in FIGS. 51 and 42, the outer peripheral portion of the surface on the side of the protective cover 1026 on which the light emitted from the LED element 1025 is emitted. It consists of a substantially convex curved surface (a surface located on the outer peripheral side of the top portion of the dome portion 1026n) formed on the side surface. More specifically, as shown in FIG. 51, the outer peripheral side surface (front surface) of the protective cover 1026 is viewed from the lower end (the portion closest to the floor surface) toward the base member 1021 (upward) when viewed from the side. As described above, it extends in an arc shape (see FIGS. 42 and 51).
The actual protective cover 1026 is ring-shaped (FIG. 50) when viewed from the floor side, and the diameter of the lower end portion (the top portion of the dome portion 1026n) is that of the protective cover fitting portion 1031a. The diameter of the portion is smaller than the diameter of the rear translucent cover opening 1031c. In particular, the diameter of the lower end portion of the protective cover 1026 is smaller than the diameter of the inner peripheral edge of the protective cover fitting portion 1031a. Therefore, when the rear translucent cover 1031 is attached to the protective cover 1026, as shown in FIGS. 50 and 51, the rear translucent cover opening 1031c is inserted into the rear translucent cover opening 1031c so that the rear translucent cover 1031 is inserted. The light cover 1031 may be moved from the lower side to the upper side of the protective cover 1026. At this time, even if the protective cover 1026 and the rear translucent cover 1031 are displaced in the horizontal direction, once the lower end portion of the protective cover 1026 is in the rear translucent cover opening 1031c, as described above. Since the outer peripheral side surface of the protective cover 1026 is formed in a substantially convex curved surface, after that, if the rear translucent cover 1031 is moved upward, the rear translucent cover opening 1031c is formed on the protective cover 1026. It also moves in the horizontal direction while sliding along the arcuate curved surface on the outer peripheral side surface. Eventually, the horizontal direction is aligned with a predetermined correct position in a self-alignment manner. In other words, when the inner peripheral edge of the protective cover fitting portion 1031a of the rear translucent cover 1031 is moved along the outer peripheral side surface of the dome portion 1026n, the inner peripheral edge of the protective cover fitting portion 1031a is outside the dome portion 1026n. Naturally guided to the periphery. This position corresponds to a position where the rear translucent cover 1031 is rotated when the protective cover fitting portion 1031a is fitted to the rear translucent cover fitting portion 1026d.
After reaching the position where the protective cover fitting portion 1031a of the rear translucent cover 1031 contacts the rear translucent cover fitting portion 1026d, the rear translucent cover 1031 is rotated to fit the rear translucent cover. When the mating portion 1026d and the protective cover fitting portion 1031a are fitted, the attaching operation of the rear translucent cover 1031 to the protective cover 1026 is completed.
Here, since the outer peripheral side surface of the protective cover 1026 is a curved surface that protrudes downward, the rear translucent cover 1031 is moved in a self-position while sliding the rear translucent cover opening 1031c along the curved surface. In addition, an alignment function assisting function for guiding the protective cover 1026 to the fitting position is achieved. For this reason, the rear translucent cover 1031 is appropriately attached to the protective cover 1026 while being easily positioned without requiring the work of precisely matching the horizontal position with respect to the LED lighting device main body 1001 from the beginning. Can do.
Further, the protective cover fitting portion 1031a of the rear translucent cover 1031 projects from the inner periphery of the upper end portion toward the inside in the radial direction. Therefore, when the rear translucent cover 1031 is attached to the protective cover 1026, the protective cover fitting portion 1031a is first brought into contact with the dome portion 1026n, and the rear translucent cover 1031 is moved to a position where the protective cover 1026 is attached. It will be surely guided.

The protective cover 1026 has a diffusion processing unit that diffuses the light emitted from the LED element 1025. The diffusion processing unit is implemented by, for example, a surface treatment described later. The protective cover 1026 is subjected to a surface treatment for diffusing light on the outer surface side of the outer peripheral portion thereof. More specifically, as described above, the protective cover 1026 has a shape similar to that of a ring-shaped half pipe having an upper surface opened (FIG. 42). However, the edge of the upper surface opening and a predetermined shape on the outer surface of the half pipe are used. The region surrounded by the line is subjected to graining having light diffusibility. Here, the above-mentioned predetermined line refers to the outside of the protective cover 1026 in which the light emitted from the above-mentioned 1/2 beam angle out of the light emitted from the plurality of LED elements 1025 (FIG. 40) forms a half-pipe shape. It is a line that can be drawn by connecting point groups that intersect the surface and linearly approximating (because the protective cover 1026 is ring-shaped, actually connecting the point groups forms a circle on the ring).
In addition, as described above, the protective cover 1026 is composed of two identical protective cover pieces 1026A and 1026B, but the vicinity of these two protective cover connecting portions 1026b is also subjected to a texture.
By applying a texture to the outer surface of the protective cover 1026 as described above, generation of shadows of the circuit components 1023a and 1023b and of the protective cover connecting portion 1026b (which is a connecting portion) is suppressed, and the light is emitted from the translucent cover 1003. Can be made uniform over the entire surface. It should be noted that a portion of the outer surface of the protective cover 1026 that is not textured is transparent.

The texture processing, which is a surface treatment for diffusing light, will be described in more detail. The embossing of the protective cover 1026 is realized by densely forming fine protrusions having a height (arithmetic average roughness: Ra) in the range of 5 μm to 100 μm on the outer surface. Ra can be measured using, for example, a surface roughness meter (manufactured by Tokyo Seimitsu Co., Ltd., Surfcom 1400G). In general, when the surface of a translucent member such as the protective cover 1026 is subjected to a graining process, light diffusivity is hardly exhibited when the projection size is 5 μm or less. Light diffusibility is also increased.
In the embodiment, the protrusion size (height) is large in the range from the edge of the upper surface opening of the protective cover 1026 to the line defined by the ½ beam angle, and is large at the edge of the upper surface opening, while defined by the ½ beam angle. The embossing process is performed by changing the protrusion size in an inclined manner so that the size is small in the vicinity of the line. Examples of the gradient change in the protrusion size include 60 μm at the opening edge of the upper surface and 5 μm in the vicinity of the line defined by the 1/2 beam angle.
By subjecting the surface of the protective cover 1026 to such an inclined texture for the protrusion size, the illumination light of the LED element 1025 emitted at a shallow angle close to parallel to the floor surface is greatly diffused by the large size protrusion. In addition, while the shadows of the circuit components 1023a and 1023b are effectively suppressed, the diffusibility of the LED element 1025 emitted at an angle close to the direction orthogonal to the floor surface is small and the direction orthogonal to the floor surface is bright. Can be irradiated.

Here, the protective cover 1026 is composed of two identical protective cover pieces 1026A and 1026B. However, as described above, the protective cover 1026 may be composed of two or more members regardless of whether or not they are identical to each other. For example, one member can be used without being divided.
Further, the outer shape of the protective cover 1026 is a ring-shaped half-pipe with an open upper surface (an arc shape with a cross-section projecting downward), and the periphery of the protective cover opening 1026a is an internal LED board 1024 or lighting circuit board. The shape can be changed as long as the performance of the lighting device is not deteriorated, such as no interference with the light 1023 and unevenness of the illumination light. Further, the outer peripheral outer surface of the protective cover 1026 does not have to be substantially curved all around the ring shape, and it is only necessary to include an inclined surface in a range that does not cause unevenness in intensity of illumination light.

(3-1-11 Assembly of LED lighting device main body)
The mutual positional relationship among the hook holding portion 1010, the base member 1021, the lighting circuit board 1023, the LED board 1024, and the protective cover 1026 constituting the LED lighting apparatus main body 1001 will be described with reference to FIGS.
First, as shown in FIG. 29, the hook holding portion 1010 is fitted and fixed to the base member 1021. In addition, around the base member opening 1021a of the base member 1021, six LED substrates 1024 are arranged in an annular shape. A lighting circuit board 1023 is disposed around the outer periphery of the LED board 1024. An annular protective cover 1026 is disposed so as to cover the LED substrate 1024 and the lighting circuit substrate 1023.

(4. Configuration and installation of translucent cover)
Here, the translucent cover 1003 includes a rear translucent cover 1031 and a front translucent cover 1032 as shown in FIG. That is, the rear translucent cover 1031 is attached to the LED lighting device main body 1001, and the front translucent cover 1032 is attached to the rear translucent cover 1031.
As shown in FIGS. 27 to 29 and FIGS. 43 to 46, the translucent cover 1003 attached to the LED lighting device main body 1001 includes a rear translucent cover 1031 that fits the protective cover 1026, and the rear translucent cover 1031. It consists of two members, a front translucent cover 1032 attached to the lower opening of the light cover 1031 and covering the LED lighting device main body 1001 from below. Both covers 1031 and 1032 are manufactured using a thermoplastic synthetic resin such as polypropylene (PP).
As shown in FIG. 50, the rear translucent cover 1031 has a cylindrical shape having a protective cover fitting portion 1031a on the upper opening side and a front cover fitting portion 1031b on the lower opening side. have. The protective cover fitting portion 1031a is fitted with the rear translucent cover fitting portion 1026d of the protective cover 1026. The front cover fitting portion 1031b is fitted with the rear cover fitting portion 1032a of the front translucent cover 1032.
As shown in FIG. 45, the front translucent cover 1032 has a dome shape and has a rear cover fitting portion 1032a on the opening side. The rear cover fitting portion 1032a is fitted with the front cover fitting portion 1031b of the rear translucent cover 1031.
There are a plurality of rear translucent cover fitting portions 1026d and protective cover fitting portions 1031a, provided at positions corresponding to each other, and by rotating the rear translucent cover 1031 with respect to the protective cover 1026, Both fitting parts 1026d and 1031a are fitted. There are a plurality of front cover fitting portions 1031b and rear cover fitting portions 1032a, which are provided at positions corresponding to each other, and by rotating the front translucent cover 1032 with respect to the rear translucent cover 1031, Both fitting parts 1031b and 1032a are fitted.
When the translucent cover 1003 is attached to the LED lighting apparatus main body 1001, first, the annular rear translucent cover 1031 is attached to the protective cover 1026 attached to the base member 1021, and then the rear translucent The front cover fitting portion 1031b provided inside the lower opening of the cover 1031 and the rear cover fitting portion 1032a of the front translucent cover 1032 are fitted to each other so that the dome-shaped front translucent cover 1032 is rear transparent. Attached to the light cover 1031.
Since the translucent cover 1003 is divided into two members, a rear translucent cover 1031 and a front translucent cover 1032, each has a lighter weight than the case of a single structure, so that the rear cover to the protective cover 1026 is provided. Even if the installation work of the translucent cover 1031 and the installation work of the front translucent cover 1032 to the rear translucent cover 1031 are work from the viewpoint of looking up at the ceiling surface 1005 from the floor surface direction, it is easily performed. be able to.
The details of the work procedure for attaching the rear translucent cover 1031 to the protective cover and attaching the rear translucent cover 1031 to the protective cover have been already explained.

The reason why polypropylene (PP) is used as the material of the translucent cover 1003 is suitable for reducing the weight and cost, and is not explained here, but is output from an external remote controller. This is because it is suitable for transmitting an infrared signal and reaching the receiving unit inside the ceiling light 1100.
In addition, the translucent cover 1003 has a continuous curved surface shape, is subjected to a texture processing to form a light diffusing surface having a high density, or contains a diffusing agent in the material, so that the light from the ceiling light 1100 can be obtained. The emitted light can be made uniform over the entire surface.

Furthermore, since the LED lighting device main body 1001 is provided with a transmission window 1015 that allows the ceiling surface 1005 side to be seen through when viewed from the mounting surface side of the LED element 1025 that is a light emission source, the wiring device 1007 can be securely attached from below. The LED illuminating device main body 1001 can be easily attached while visually observing. In particular, since the hooking blade holding member 1011 for holding the hooking blade 1012 is formed of a transparent material and also serves as the transmission window 1015, the ceiling surface 1005 side is visually observed from below through the entire hooking blade holding member 1011. Thus, the position and installation direction of the wiring device 1007 including the peripheral portion of the wiring device 1007 can be visually recognized with a wide field of view without a blind spot, and the mounting operation can be performed more easily.
Furthermore, since the hooking blade holding member 1011 and the transmission window 1015 are formed of an insulating material, even if the hooking blade 1012 is connected to the wiring fixture 1007 in which the LED lighting device main body 1001 is energized, a metal member or the like There is no risk of an electrical short circuit, and the LED lighting device main body 1001 can be attached or removed easily and safely.

As mentioned above, although embodiment of this invention was described, this invention is not restricted to these embodiment, Even if there is a design change of the range which does not deviate from the summary of this invention, it is included in this invention. That is, various changes and modifications that can be made by those skilled in the art are also included in the present invention.
<Modification>
(1. Mounting member)
In the embodiment, the base member 21 and the hook holding portion (corresponding to an example of the attachment member) 10 and the base member 1021 and the hook holding portion (corresponding to an example of the attachment member) 1010 are assembled integrally. The base member and the attachment member may be configured separately. That is, you may utilize the conventional adapter for an attachment member.
(2. Lighting circuit board)
In the embodiment, the lighting circuit boards 23 and 1023 are arranged outside the LED boards 24 and 1024 arranged in a ring shape when viewed from the light emitting direction, but may be inside. Note that, as described above, various effects can be obtained when the lighting circuit board is arranged outside the annular LED board.
(3. Surface treatment)
In the embodiment, the diffusing process uses the texturing process, but other methods such as blasting and diffusion film coating may be used.

  INDUSTRIAL APPLICABILITY The present invention can be widely applied as an LED lighting device that is installed along a living room, a Japanese-style room, a living room such as a bedroom or a child's room, a corridor, a ceiling surface such as an entrance, or a wall surface.

1: LED lighting device body 10: Hook holding portion 11: Hook blade holding member 11a: Rotating portion 11b: Lock opening 11c: Hook blade fixing groove 11d: Hook blade installation groove 11e: Wiring groove 11f: Wiring fixing portion 11g: Base member alignment part 11h: Base member fitting part 11j: Knob part 11m: Lock member arrangement part 11n: Base member fixing groove 11o: Protective cover fixing groove 11p: Outer cylinder 11r: Inner cylinder 11s: Protective cover position pin 12: Hook blade 12a: Hook portion 12b: Blade fixing hole 12c: Blade fixing portion 12d: Blade terminal fixing portion 12e: Blade terminal hole 13: Lock member 13a: Fixing claw 13b: Fixed base portion 13c: Fixed protrusion 13d: Pushing portion 13e : Lock base part 13f: Base protrusion 13g: Spring part 14: Power line 15: Transmission window 21: Base member 21a: Base member open Part 21b: Hooking blade holding fitting part 21c: Base outer edge part 21d: LED board holding part 21e: Circumferential rib 21f: Radial rib 21g: Hooking blade holding part alignment part 21h: Hooking blade holding part fixing hole 21j: LED Board fixing hole 21k: Lighting circuit board fixing hole 21m: Protective cover fixing hole 21n: Ceiling spring fixing hole 211a: Central part side rib 211b: Peripheral part side rib 211c: Holding surface 22: Ceiling spring 23: Lighting circuit board 23a : Circuit component 23b: Circuit component 23c: Connector 23d: Lead wire 24: LED substrate 24a: Connector 24b: Lead wire 25: LED element 26: Protective cover 26a: Protective cover opening 26b: Protective cover connecting portion 26c: Protective cover outer edge Part 26d: Rear translucent cover fitting part 26e: Hook fixing hole 26f: Base member fixing hole 6 g: power line wiring groove 26 h: hook holding and fixing portion 26 j: hook holding and fixing guide 26 k: through hole 26 m: notch 3: translucent cover 31: rear translucent cover 31a: protective cover fitting portion 31b: front cover fitting Portion 31c: Rear cover opening 32: Front translucent cover 32a: Rear cover fitting portion 5: Ceiling surface 7: Wiring device 100: Ceiling light

Claims (4)

An LED substrate with an LED element mounted thereon;
A translucent cover covering the light emitting direction of the LED element;
An LED lighting device comprising a protective cover that is positioned between the LED substrate and the translucent cover and covers the LED substrate,
The protective cover is formed by combining a plurality of protective cover pieces extending in the longitudinal direction of the LED substrate and having an arc shape in which a cross-sectional shape perpendicular to the extending direction extends in the light emitting direction,
Adjacent protective cover pieces are connected in a state having a connecting portion in which ends in the extending direction are overlapped with each other,
The distance between the top part of the connection part and the LED board is shorter than the distance between the top part of the part other than the connection part and the LED board in the protective cover. The LED lighting device according to claim 1, wherein the connection portion of the protective cover is subjected to a diffusion process for diffusing light emitted from the LED element. The LED illuminating device according to claim 2, wherein the diffusion process is performed on at least one of the two end portions constituting the overlapping portion. The LED illumination device according to claim 3, wherein the diffusion treatment is performed on a surface of the one end portion facing the LED element.

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