JP2015216099A - Led lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lighting system capable of illuminating widely and uniformly.SOLUTION: An LED lighting system 100 is detachably attached to an attachment target member with an attachment part interposed therebetween. The LED lighting system 100 includes: a base member 10 having the attachment part in a middle part thereof; an LED element 15 as a light source; and an LED substrate 14 disposed on the base member 10 and configured to mount the LED element 15 thereon. The LED substrate 14 is located on a midpoint M1 between a center O1 of the middle part and a virtual point on an outer edge portion 10c of the base member 10 when viewed from a light emission direction of the LED element 15.

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 lighting devices that are suspended from the ceiling and illuminate the interior of the room.

  Such a ceiling-mounted ceiling light is a device in which a lighting device is attached to a wiring device (attached member) such as a hooked ceiling body attached to the ceiling surface via an adapter, and recently, it has a thickness. (See, for example, Patent Document 1).

  Specifically, for example, an illumination device described in Patent Document 1 includes a light source including an LED, a power supply board that supplies power to the light source, a holder that holds the light source and the power supply board, and a light source. And a translucent cover for covering. The holding body has a hole for attaching the holding body to the mounted member via the mounting member at the substantially center thereof, the power supply board is provided around the hole of the holding body, and the light source is provided around the power supply board. The provided lighting device further includes a center cover disposed to face the hole of the holding body. Thereby, the protrusion height from a to-be-attached member can be reduced, and an illuminating device can be reduced in thickness.

  However, in the illumination device described in Patent Document 1, the light source, the power supply board, and the mounting member are arranged on the holding body so as not to overlap each other with respect to the mounted member. For this reason, although the thickness can be reduced, there is a problem that it is difficult to emit uniform light from the center cover.

Patent No. 5,374,662

  The problem to be solved by the present invention is to provide an LED lighting device that can illuminate widely and uniformly in view of the above problems.

  The present invention provides an LED lighting device that is detachably attached to a member to be attached via an attachment portion, a base member having the attachment portion in a central portion, an LED element that is a light source, the base member, and the base member An LED substrate on which the LED element is mounted, and the LED substrate is a midpoint between the center of the central portion and a virtual point on the outer edge portion of the base member when viewed from the light emitting direction of the LED element. It is characterized by being located above.

  According to the present invention, since the LED substrate is located at the central portion, it can be illuminated widely and uniformly.

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 top view of the state which removed the front translucent cover of the LED lighting apparatus of 1st Embodiment. It is a perspective view of the base member used for a 1st embodiment. It is sectional drawing of the base member used for 1st Embodiment. It is a perspective view of the adapter used for a 1st embodiment. It is an arrangement plan of a lighting board and a LED board used for a 1st embodiment. It is a top view of the lighting board | substrate and LED board | substrate 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 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 lock state of the lock member used for 2nd Embodiment, (b) is a perspective view in the cancellation | release state of a lock member. It is a perspective view of the base member used for 2nd Embodiment. It is sectional drawing 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 illumination 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 an arrangement plan of a lighting board and an LED board in a modification. It is an arrangement plan of a lighting board and an LED board in a modification.

<Overview>
The LED illumination device according to one aspect of the present invention is an LED illumination device that is detachably attached to a member to be attached via an attachment portion, a base member having the attachment portion at a central portion, an LED element that is a light source, An LED substrate that is disposed on the base member and on which the LED element is mounted, and the LED substrate has a center of the central portion and an outer edge portion of the base member when viewed from the light emitting direction of the LED element. It is located on the midpoint of the upper virtual point.

In the LED lighting device according to another aspect, the base member has an opening for the attachment portion in the central portion, and the attachment portion is integrated into the opening.
In the LED lighting device according to another aspect, the base member has an opening for the attachment portion in the central portion, and the attachment portion is detachably attached to the base member through the opening.
An LED lighting device according to another aspect includes an LED substrate including an LED element, a lighting substrate that supplies power to the LED element, a base member that holds the LED substrate and the lighting substrate, and a transparent member that covers the LED substrate. An LED lighting device comprising a light cover, wherein the base member has a hole for attaching the base member to the attached member at substantially the center thereof, and the LED substrate is provided around the hole of the base member, The lighting substrate is provided around the LED substrate to provide an LED lighting device.

<First Embodiment>
The LED lighting device according to the present embodiment includes an LED board including an LED element, a lighting board that supplies power to the LED element, a base member that holds the LED board and the lighting board, and the LED board. An LED lighting device including a light-transmitting cover for covering, wherein the base member has a hole (opening) for attaching the base member to a member to be attached at an approximate center thereof, and the LED substrate is formed of the base It is provided around the hole of the member, and the lighting substrate is provided around the LED substrate.
Hereinafter, a preferred embodiment of the 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.

1 to 3 show one of the lighting devices 100 of the first embodiment, and the LED lighting device 100 according to this embodiment includes an LED lighting main body 1 and a lighting device 1 as shown in FIGS. It consists of the translucent cover 3 attached to this LED illumination main body 1 and covering the LED illumination main body 1. As shown in FIG. 2, the LED lighting device 100 is electrically and mechanically connected to a wiring device 7 that is a member to be attached such as a rosette or a hooking sealing body that is installed on the ceiling surface 5 in advance. A member (corresponding to an example of a mounting portion of the present invention) is provided with an adapter 6, and the LED illumination main body 1 is detachably attached to the adapter 6.
When the LED lighting device 100 is mounted on the ceiling surface 5, the adapter 6 and the adapter receiving portion of the base member 10 are arranged with the ceiling spring 12 made of plastic or the like attached to the ceiling surface 5 side of the base member 10 facing the ceiling surface 5. The LED illumination main body 1 is pushed into the ceiling surface 5 so as to connect to 10b. Then, the translucent cover 3 is fitted to the front side of the LED lighting main body 1, and the LED lighting device 100 can be used as a ceiling light. The ceiling spring 12 can prevent displacement and vibration of the LED lighting device 100 by contacting the ceiling surface 12. In this case, if the wiring fixture 7 is provided on the ceiling surface 5, the LED lighting device 100 can be attached with good workability without applying special reinforcement to the ceiling surface 5.

(1. LED lighting body)
As shown in FIGS. 2 and 3, the LED illumination main body 1 includes a base member 10 and an adapter receiving portion 10 b that attaches the base member 10 to an adapter 6 attached to a wiring device 7 of the attached portion such as the ceiling surface 5. (Refer to FIG. 5), a lighting substrate 13 for lighting the LED elements 15 disposed on the base member 10, an LED substrate 14 on which the LED elements 15 are mounted, the lighting substrate 13 and the LED substrate 14. It consists of a protective cover 16 that covers it.

(1-1 Base member)
The base member 10 of the LED lighting main body 1 is created by punching, pressing, bending, or the like using a metal material such as cold rolled steel plate (SPCC). The base member 10 has a disk shape as shown in FIGS. 2 to 6, and a circular base member opening 10a is opened at the center (center portion) as shown in FIG. 6 is formed so that it can be seen from the outside using the base member opening 10a. That is, the base member 10 has an annular shape having an opening at the center when viewed from the floor side (which has the same meaning as the light emitting direction of the LED element). More specifically, the base member 10 has an annular shape. The base member opening 10a corresponds to an example of an opening for the adapter 6. Here, the base member opening 10a has a circular shape when viewed from the floor surface side, but may have other shapes such as a square, a rectangle, and a polygon.

  As shown in FIG. 5, the base member 10 is processed with an annular circumferential rib 10e including a central rib 101a and a peripheral rib 101b and a radial rib 10f. By providing these ribs 10e and 10f, the strength of the base member 10 can be reinforced, the thickness of the metal material constituting the base member 10 can be reduced, and weight reduction and cost reduction are realized. In addition, the heat dissipation area can be increased.

  Around the base member opening 10a, an adapter receiving portion 10b for fixing the adapter 6 is provided by processing. A substrate fixing portion 10d is provided in an annular portion between the central portion side rib 101a and the peripheral portion side rib 101b. In other words, the substrate fixing portion 10d protrudes to the floor surface side of the base member 10 other than the portion other than the substrate fixing portion 10d. The board fixing portion 10d is configured so that the light emission of the LED element 15 mounted on the LED board 14 is uniform over the entire floor surface side when the LED illumination main body 1 is attached to the ceiling surface 5. The lighting body 1 is provided so as to be inclined toward the floor surface when the lighting body 1 is attached to the ceiling surface 5. That is, the board fixing part 10d is inclined so as to approach the ceiling surface 5 as it is away from the center part. When viewed from the floor surface side, the substrate fixing portion 10d is provided on the side near the base member opening 10a in the center, and has a function of ensuring the mechanical characteristics of the adapter receiving portion 10b.

(1-2. Substrate layout)
On the floor surface side when the base member 10 of the LED lighting main body 1 is attached to the ceiling surface 5, an LED substrate 14 on which the LED elements 15 are mounted and a lighting substrate 13 for lighting the LED elements 15 are disposed. . The LED substrate 14 is disposed on the substrate fixing portion 10 d of the base member 10. The lighting substrate 13 is arranged on the peripheral edge side rib 101b of the base member 10 and is provided in a partial region or the entire region (here, a partial region) around the LED substrate 14. Yes. That is, the lighting substrate 13 is located outside the LED substrate 14 when the base member 10 is viewed from the floor surface side. As a result, the lighting substrate 13 can be divided into a plurality of substrates, and the LED lighting device 100 can be made compact to reduce the cost.

(1-3 LED board)
As shown in FIG. 2, FIG. 3, FIG. 8 and FIG. 9, there are a plurality of LED substrates 14, which are arranged around the base member opening 10 a in the base member 10. More specifically, the plurality of LED substrates 14 are fixed to the substrate fixing portion 10d using fixing means such as screws and pins. The LED substrate 14 has a long shape having a predetermined width dimension. Here, the LED substrate 14 has a rectangular shape, and each end is chamfered in a triangular shape. That is, the LED substrate 14 has a shape close to an arc shape. Here, the plurality of LED substrates 14 are arranged in a single annular shape surrounding the base member opening 10a. Specifically, the six LED boards 14 are arranged so as to be connected by the board connection lines, and are formed in a substantially circle shape as a whole (exactly a hexagonal shape but a substantially circular shape). In this state, the base member 10 is disposed on the substrate fixing portion 10d. This LED board 14 consists of a glass composite board (CEM-3) wired on one side, and the LED element 15 is mounted on one side. In addition, what the LED element 15 was mounted in the LED board 14 may be called an LED board. By using the substrate divided in this way (in other words, a plurality of substrates), the thermal contraction is absorbed in the divided portion of the substrate (in other words, between the substrates adjacent in the circumferential direction), and the substrate is deformed. Can be suppressed. Moreover, since the edge part of the LED board 14 has a triangular shape, when it arrange | positions cyclically | annularly, the clearance gap between adjacent LED boards 14 can be made small.
In particular, as shown in FIG. 9, the substrate connection lines (lead wires 14b) are used for the substrate wiring between the LED substrates 14 as described above. Adjacent LED boards 14 are formed by connecting lead wires 14b connected to connectors 14a provided on one LED board 14 to the other LED board 14 by soldering. Thereby, the LED substrates 14 can be easily connected to each other during assembly, and the number of components can be reduced. The substrate wiring for connecting to the lighting substrate 13 has the same configuration.

  Moreover, as shown in FIG. 9, the LED element 15 is arrange | positioned at this LED board 14 on the virtual circumference. Moreover, you may arrange | position so that the LED element 15 on a circumference may comprise a staggered relationship. The LED substrate 14 is disposed on a substrate fixing portion 10d that is provided so that the center side is inclined toward the floor surface when the LED illumination main body 1 is attached to the ceiling surface 5. Thereby, the LED board 14 can comprise the board | substrate from which the translucent cover 3 becomes uniform brightness. The LED substrate 14 is fixed to the base member 10 with synthetic resin pins or the like. The back surface of the LED substrate 14 on which the LED element 15 is not mounted is fixed to the substrate fixing portion 10d of the base member 10 and thermally coupled, so that heat generated from the LED substrate 14 is dissipated by the base member 10. It becomes possible to do. Thereby, the fall of the luminous efficiency of the LED element 15 can also be suppressed. In addition, in LED board 14, the light extraction efficiency can be improved by bonding a highly reflective sheet to the LED element mounting surface side of LED element 15 or applying a highly reflective resin.

(1-4 LED elements)
Various known LEDs can be used as the LED element 15 mounted on the LED substrate 14. In the present 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, and the configuration of an LED lighting device capable of color matching is obtained. Yes.

(1.-5 lighting substrate)
As shown in FIGS. 2, 3, 8, and 9, the lighting substrate 13 converts an alternating current supplied from the wiring device 7 through the adapter 6 into a direct current and supplies the direct current to the LED substrate 14. The lighting substrate 13 includes a substrate and circuit components 13a and 13b that are mounted on the substrate and constitute a circuit having each function. There may be one lighting substrate 13 or a plurality of lighting substrates 13. The lighting substrate 13 is one here. When viewed from the floor surface side, the lighting board 13 is arranged along the entire outer circumference side of the annularly arranged LED board 14 and along a part of the outer circumference side. Here, the lighting substrate 13 is arranged in a partial region along the outer peripheral side. Specifically, the lighting substrate 13 has an arc shape and is disposed on the front surface side (floor surface side) of the peripheral edge side rib 101 b of the base member 10. The lighting substrate 13 is composed of a paper phenol substrate (FR-1) in which circuit components 13a and 13b are wired on one side. By disposing the back surface of the lighting substrate 13 on which the circuit components 13 a and 13 b are not mounted via the insulating sheet on the front surface side of the base member 10, heat generated from the lighting substrate 13 is transmitted via the base member 10. It is possible to dissipate heat. As the circuit components 13a and 13b constituting the lighting substrate 13, various diodes, capacitors, ICs, resistors, and the like for performing circuit functions such as overcurrent protection, noise cut, rectification, smoothing, and dimming control are known. The electronic parts can be used.

  The power wiring from the adapter 6 to the lighting substrate 13 is wired along the radial rib 10 f of the base member 10. The direct current supply from the lighting substrate 13 to the LED element 15 is performed by a connection line that connects the LED substrate 14 and the lighting substrate 13 as shown in FIG. For this wiring, a lead wire 13d is used, one end of the lead wire 13d is connected to the lighting substrate 13 via the connector 13c, and the other end of the lead wire 13d is connected to the LED substrate 14 by solder. Thereby, connection with the LED board 14 at the time of an assembly can be performed easily, and a number of parts can be reduced.

The arrangement of the circuit components 13a and 13b on the lighting substrate 13 is such that the short circuit component 13a is located on the center (inner circumference) side of the lighting substrate 13 and the tall circuit component 13b is located on the outer (circumference) side of the lighting substrate 13. Is arranged. As a result, the height of the circuit component 13b is higher than the height of the circuit component 13a.
The height of the circuit components 13a and 13b is a 1/2 beam angle of the light emitted from the LED element 15 (indicating a light spreading condition (light distribution), and an illuminance half of the illuminance directly below the light source (maximum luminous intensity)). (The angle formed by the line connecting the point and the light source center and the vertical line of the light source center) is required to be arranged so that the circuit components 13a and 13b are not irradiated. Thereby, the shadow of the circuit components 13a and 13b does not appear in the translucent cover 3, and it becomes 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 on the circuit component mounting surface side of the lighting substrate 13 or applying a highly reflective resin. Further, the lighting substrate 13 can be divided into a plurality of substrates, and the LED lighting device 100 can be made compact to reduce the cost.
Since the entire lighting substrate 13 is protected by the protective cover 16, the cover provided on the normal lighting substrate 13 can be omitted, and the cost can be reduced by reducing the number of components.

(1.-6 Protective cover)
As shown in FIGS. 2 to 4, 10, and 11, the protective cover 16 is made of a flame retardant resin such as polycarbonate (PP). The protective cover 16 has an annular shape, and is attached to the base member 10 so as to cover the LED substrate 14 and the lighting substrate 13 disposed on the base member 10. A protective cover opening 16 a is provided at the center of the protective cover 16, and the periphery of the protective cover opening 16 a is fixed to the central portion side rib 101 a of the base member 10. Further, the protective cover outer edge portion 16 c at the outer edge portion of the protective cover 16 is fixed to the peripheral edge rib 101 b of the base member 10. Note that the base member 10 is attached to the protective cover 16 by, for example, screws. Since the protective cover 16 covers the LED board 14 and the lighting board 13, the electrical safety of the installer in attaching the LED lighting body 1 to the adapter 6 can be achieved.

  The protective cover 16 is provided with a translucent cover fitting portion 16 b that is fitted with the rear translucent cover 31 of the translucent cover 3. The protective cover fitting portion 31 a of the rear translucent cover 31 is provided. And can be fitted. By fixing the rear translucent cover 31 to the protective cover 16, it is possible to reduce the number of processing steps for creating the fitting portion as compared with the case of fixing to the base outer edge portion 10c of the base member 10 of the metal member.

(1-7 Assembly of LED lighting body)
The mutual positional relationship among the base member 10, the lighting substrate 13, the LED substrate 14, and the protective cover 16 constituting the LED lighting main body 1 will be described with reference to FIGS. 2 and 3. Six LED boards 14 are annularly arranged around the base member opening 10 a of the base member 10. The lighting substrate 13 is disposed outside the LED substrate 14. An annular protective cover 16 is disposed so as to cover the LED substrate 14 and the lighting substrate 13. As a result, the LED lighting device 100 according to the first embodiment can save space, can be made compact, and can reduce costs.

(2. Translucent cover)
As shown in FIGS. 1 to 3 and FIGS. 12 to 15, the translucent cover 3 attached to the LED illumination main body 1 and the rear translucent cover 31 fitted to the protective cover 16 and the LED illumination main body 1. The LED illumination main body 1 is covered as shown in FIG. The translucent cover 3 uses a thermoplastic synthetic resin such as polypropylene (PP), and as shown in FIG. 2 in particular, an annular rear translucent cover 31 and a dome-shaped front translucent cover 32. Are integrated by fitting the front cover fitting portion 31b of the rear translucent cover 31 and the rear cover fitting portion 32a of the front translucent cover 32 together.
Thereby, a manufacturing process can be reduced and the effort and cost which manufacture requires can be reduced, At the same time, the compactness and weight reduction of the translucent cover 3 are realizable.

  Note that the use of polypropylene (PP) as the material of the translucent cover 3 is suitable for reducing weight and reducing costs, and transmits infrared signals emitted from an external remote controller. This is because it is suitable for reaching an infrared signal. Moreover, the translucent cover 3 is further formed on the entire surface by forming a continuous curved surface, applying a texture processing to form a light diffusing surface having a high density, or adding a diffusing agent to the material. Light can be emitted uniformly. Thereby, the translucent cover 3 can carry out light diffusion of the emitted light, and can light-emit uniformly on the whole surface.

(3. Adapter)
As shown in FIG. 7, the adapter 6 is electrically and mechanically connected to the wiring device 7 installed on the ceiling surface 5 by the hooking blade 6b provided on the upper surface side, and has a substantially cylindrical shape. It is inserted into the wiring device 7 and rotated and fixed around a direction orthogonal to the ceiling surface 5 as a central axis. In order to hold the fixing, a stopper 6 c is provided on the upper surface side of the adapter 6. The stopper 6c is released by pressing the button 6d on the peripheral wall. A pair of locking portions 6 a are provided on both sides of the peripheral wall of the adapter 6. The pair of locking portions 6a are provided so as to always protrude toward the outer peripheral side by a built-in spring. The locking portion 6a is immersed by operating a lever provided on the lower surface side. The locking portion 6 a is engaged with the adapter receiving portion 10 b of the base member 10, so that the LED illumination main body 1 is attached to the adapter 6. A power cord (not shown) connected to the lighting board 13 is led out from the adapter 6 and is connected to the lighting board 13 via a connector.

  The adapter 6 is formed of a transparent resin. This makes it easy to see the wiring device 7 when the adapter 6 is rotated and fixed to the wiring device 7, and the hooking blade 6b is inserted into the wiring device 7. Can be made easier.

(4. LED board layout)
When viewed from the light emitting direction of the LED element 15, the LED substrate 14 has a center O1 of the base member opening 10a and a base outer edge portion of the base member 10 (as an example of the outer edge portion of the present invention) as shown in FIG. It corresponds to a virtual point on 10c and a midpoint M1. That is, the LED substrate 14 is disposed on the track C1 of the midpoint M1 when the virtual point on the base outer edge portion 10c is moved. The LED elements 15 are annularly arranged along a track C1 of a center point M1 between the center O1 of the base member opening 10a and the base outer edge 10c. With these configurations, the LED substrate 14 is arranged in the center of the base member 10 in the radial direction, and uniform light is emitted as a whole when the LED lighting device 100 is viewed from the floor surface side.

  When the minimum distance between the center O1 of the base member opening 10a and the base outer edge 10c is a radius r and the center O1 is used as a reference, the LED element 15 is 0.3 times or more and 0.6 times the radius r. It is arranged within the following range. Preferably, it is arranged within a range of 0.35 times to 0.55 times the radius r. Thereby, when the base member 10 is viewed from the floor surface side, a space is formed between the LED substrate 14 and the base member opening 10a. Thereby, when attaching the protective cover 16 to the base member 10, it can suppress that the protective cover 16 contacts the LED board 14 or the LED element 15 on the LED board 14. FIG.

(5. Positional relationship between LED board and lighting board)
When viewed from the light emitting direction of the LED element 15, the LED substrate 14 is positioned on the midpoint M1 between the center O1 of the base member opening 10a and the virtual point on the base outer edge 10c, as shown in FIG. doing. In particular, in the LED substrate 14, the area of the portion located outside the track C1 passing through the midpoint M1 is larger than the area of the portion positioned inside the track C1.
For this reason, when the base member 10 is viewed from the floor side, a larger space is formed on the outer peripheral side of the LED substrate 14 than on the inner peripheral side of the LED substrate 14. The lighting substrate 13 is arranged in this wide space. Therefore, it becomes possible to widen the interval between the circuit components 13a and 13b mounted on the substrate constituting the lighting substrate 13, and the accumulation of heat generated in the lighting substrate 13 can be suppressed.
Since the lighting board 13 is arranged using the space outside the LED board 14 as described above, for example, the circuit components 13a and 13b can be arranged along the LED board 14 arranged in a ring shape. . Thereby, the LED illumination device 100 can be made compact as a whole.

(6. Other)
As described above, in the present embodiment, the lighting substrate is provided around the LED substrate. As a result, the LED lighting device can be made compact and the cost can be reduced, and good design properties are exhibited.

<Second Embodiment>
Hereinafter, the second embodiment will be described in detail 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 that is 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, there exists a thing provided in the ceiling surface as a to-be-attached member, and a thing provided in the wall surface. Examples of the ceiling light that is attached to the mounted member on the ceiling surface include those used in living rooms such as living rooms, Japanese-style rooms, bedrooms, and child rooms, and those used in hallways, toilets, entrances, and the like.
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. Structure of ceiling light)
As shown in FIGS. 16 to 18, an LED illumination device, here, a ceiling light 1100 shown as an embodiment, emits light emitted from an LED illumination body 1001 and an LED element 1025 mounted on the LED illumination body 1001. It is comprised with the translucent cover 1003 attached to the LED illumination main body 1001 so that it may cover.

(2. Mounting the ceiling light to the ceiling)
This ceiling light 1100 is an LED illumination that includes a hooking blade 1012 that is electrically and mechanically connected to a wiring device 1007 that is a mounting member such as an existing rosette or hooking ceiling body on the ceiling surface 5 (FIG. 17). The main body 1001 is detachably mounted by the hooking blade 1012 and installed on the ceiling surface. Specifically, as shown in FIGS. 16 to 18, 30, and 32, the hooking blade 1012 of the hook holding portion 1010 provided in the central portion of the LED lighting main body 1001 is attached to the existing wiring device 1007 on the ceiling surface 1005. In this state, while rotating the LED illumination main body 1001 upward, the wiring device 1007 and the hooking blade 1012 are rotated in the engaging direction. The hook holding portion 1010 corresponds to an example of the “mounting portion” in the present invention.
Thereafter, the four rear translucent cover fitting portions 1026d provided on the outer peripheral portion of the protective cover 1026 attached to the LED illumination main body 1001 are provided on the upper end outer peripheral portion of the rear translucent cover 1031. The protective cover fitting portions 1031a of the places are aligned and fitted, and the rear translucent cover 1031 is attached to the LED illumination 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. When 1032a is aligned and fitted, and the front translucent cover 1032 is attached to the rear translucent cover 1031, the ceiling light 1100 can be used.

When the ceiling light 1100 is attached to the ceiling surface 1005, three ceiling springs 1022 attached to the ceiling surface 1005 side of the base member 1021 of the LED illumination main body 1001 described later shown in FIGS. 16) is in contact with three places on the ceiling surface 1005. As shown in FIGS. 16 and 17, the ceiling spring 1022 is an elongated plate, and is curved in an arc shape so that the 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 1022 has one end of the long side (in other words, one end in the longitudinal direction) fixed to the base member 1021 with a screw, and the other end is not fixed and is on the ceiling surface side of the base member 1021. It is attached to the base member 1021 in a state of simply contacting. When mounting the ceiling light 1100 on the ceiling surface 1005, the hooking blade 1012 of the hook holding portion 1010 is deformed while the bending of the ceiling spring 1022 is reduced, that is, while the ceiling light 1100 is pushed up in the direction of the ceiling surface 1005. Is inserted into the mounting groove of 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 the positional deviation, vibration, rattling, and the like 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 LED lighting body)
As shown in FIGS. 17 and 18, the LED illumination main body 1001 includes a base member 1021, a hooking blade holding member 1011 fitted and fixed to the base member 1021, and an LED element 1025 disposed on the base member 1021. Are mounted on the LED board 1024, the lighting circuit board 1023 that supplies power for lighting the LED element 1025, and the protective cover 1026 that covers the lighting circuit board 1023 and the LED board 1024.
Here, particularly as shown in FIGS. 21 to 24, the hook holding portion 1010 includes a hooking blade 1012. The hooking blade 1012 electrically and mechanically connects the ceiling light 1100 to the existing wiring on the ceiling surface 1005. It plays a role of connecting to the instrument 1007. 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 opposite side (downward) of the ceiling surface 1005 so as to close the base member opening 1021a formed at the center of the disc-shaped base member 1021. Is done.
In the illustrated embodiment, a plurality of LED boards 1024 and lighting circuit boards 1023 are provided as shown in FIGS. 28 and 29, and the plurality of LED boards 1024 and lighting circuit boards 1023 are provided on the base member 1021. The LED substrate fixing portion 1021d and the peripheral portion side rib 1211b thus formed are directly fixed to predetermined positions on the back surface (lower surface).
As shown in FIGS. 37 and 38 in particular, the protective cover 1026 connects the LED board 1024 and the lighting circuit board 1023 fixed to the base member 1021, the electric wiring between the LED board 1024, and the lighting circuit board 1023 and the LED board 1024. Covering from below so that electrical wiring or the like is not exposed below the base member 1021. The protective cover 1026 is fixed to the lower surface of the base member 1021 as shown in FIG.

(3-1 Base member)
The base member 1021 of the LED lighting main body 1001 is formed by using a metal material such as a cold rolled steel plate (SPCC) having a thickness of 0.5 mm to 2.0 mm, for example, by punching, pressing, bending, or the like. Produced. 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. 26, the base member 1021 has a disk shape, and a circular base member opening 1021a is formed at the center thereof. That is, the base member 1021 has an annular shape. A hook blade holding member 1011 made of a transparent resin material described later is fixed to the base member opening 1021a. The fixing is performed in a state where the base member alignment portion 1011g (FIG. 21) and the hooking blade holding portion alignment portion 1021g (FIG. 26) are fitted (in other words, in a positioned state). Since the hooking blade holding member 1011 is transparent even after the hooking blade holding member 1011 is fixed, the LED lighting main body 1001 is attached from the lower side of the LED lighting main body 1 via the hooking blade holding member 1011 when the LED lighting main body 1001 is attached to the wiring device 1007. However, the wiring device 1007 can be visually recognized, and the work of attaching the LED illumination main body 1001 to the wiring device 1007 can be easily performed.

As shown in FIGS. 26 and 27, the base member 1021 is formed with a protruding portion that protrudes downward. The protrusion has an annular shape when viewed from the bottom side. Here, it has an annular shape. The lower surface (surface on the floor surface side) of the protruding portion is flat, and this flat portion is the LED substrate fixing portion 1021d. That is, as shown in FIGS. 26 and 27, the disk-shaped base member 1021 protrudes downward and has a substantially annular protrusion in which a flat LED substrate fixing portion 1021d is formed on the top surface. The part is formed. Further, a base outer edge portion (corresponding to an example of the outer edge portion of the present invention) 1021c in which the outer edge portion is bent downward is formed on the outermost peripheral portion of the base member 1021. The base member 1021 has a plurality of ribs 1021f extending in the radial direction. The plurality of ribs 1021 f are formed radially along the radial direction of the base member 1021.
The base member 1021 has enhanced mechanical rigidity due to the rib effect of the annular LED substrate fixing 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. This weight reduction further increases the work of attaching the ceiling light 1100 to the ceiling surface 1005. It becomes easy.

The LED substrate fixing portion 1021d, which is a substantially annular downward protrusion, and has a flat top surface on the lower side, is spaced substantially equiangularly from the virtual center of the disk-shaped base member 1021 (here, 60 degrees). The annular ring is divided into a plurality of pieces (here, six sections) by the radial ribs 1021f formed radially. The LED substrate 1024 is fixed to each of the plurality of sections. That is, each LED board 1024 is arranged and fixed between adjacent ribs 1021f in the protruding portion.
The lower surface of the LED substrate fixing portion 1021d for fixing the LED substrate 1024 is a flat surface as shown in FIG. 27, but is not horizontal but is inclined. The inclined surface is inclined so that the side close to the virtual center (base member opening 1021a) of the base member 1021 is positioned lower than the side close to the outer periphery of the base member 1021.

As shown in FIGS. 26 and 27, the base member 1021 has a contact portion 1021b that contacts the hook holding portion 1010 fitted to the base member opening portion 1021a on the lower peripheral surface of the base member opening portion 1021a. The contact portion 1021b is provided with a notch cut out from the base member opening portion 1021a side. This notch is a hooking blade holding portion alignment portion 1021g, and is fitted to the base member alignment portion 1011g of the hooking blade holding member 1011. When the base member 1021 is viewed from the floor surface side, the protruding portion is provided at a position close to the outer peripheral side of the contact portion 1021b, so that the mechanical characteristics at the contact portion 1021b can be ensured.
The base member 1021 has the LED substrate fixing portion 1021d and the lighting circuit substrate 1023 fixing portions formed in advance by machining (integrated processing), but is already installed on the ceiling surface 1005 by attaching the hook holding portion 1010. A hooking blade 1012 that can be electrically and mechanically connected directly to the existing wiring device 1007 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 a target element member (for example, an LED substrate) is fixed using a screw or a hook pin. The hooking blade holding portion fixing hole 1021h is provided in the contact portion 1021b.

(3-2 Configuration of hook holding unit)
As shown in FIG. 21, the hook holding portion 1010 includes a hook blade holding member 1011, a hook blade 1012 that is fixed to the hook blade holding member 1011 and functions as a pair, a lock member 1013, and a power line 1014. Has been. The ceiling light 1100 is electrically and mechanically connected to the wiring device 1007 by the hook holding portion 1010.

(3-3) Hook blade holding member
As shown in FIGS. 21 to 23, 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 outer cylinder. The bottom surface of the inner cylinder protrudes further outward from the bottom surface, forming a two-step bottom surface (FIG. 22) in which the 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 level difference 1011i is higher on the center side than on the outer peripheral side (closer to the ceiling).
The central circular portion on the rear surface side of the hooking blade holding member 1011 has a substantially rectangular groove shape having a hooking blade 1012 for attaching the hooking blade holding member 1011 to the wiring device 1007 on the ceiling surface 1005 (in other words, on the ceiling side). The rotating portion 1011a is formed so as to be recessed in a rectangular shape when viewed from above. A hooking blade fixing groove (in other words, a screw hole) 1011c into which a screw for fixing the hooking blade 1012 is inserted is firmly fixed to the groove portion (inside) of the rotating portion 1011a. The hooking blade installation groove (in other words, the screw hole) 1011d provided with the unevenness to be formed is formed.
At 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 when fixing to the base member 1021 A base member fitting portion 1011h serving as a fixed surface (contact surface) is formed. The base member fitting portion 1011h functions as a support portion that supports the contact portion 1021b of the base member 1021 from below.
From one end of the rotating portion 1011a on the rear surface (upper surface) side of the hooking blade holding member 1011, a wiring groove in which a power line 1014 for wiring commercial power from the hooking blade 1012 to the lighting circuit board 1023 is placed toward the outer peripheral portion. 1011e and a wiring fixing portion 1011f for fixing the power line 1014 disposed in the wiring groove 1011e are formed.
A lock member placement portion 1011m for receiving the lock member 1013 is provided at one end corner of the rotating portion 1011a provided at the central portion on the rear surface (upper surface) side, and the pressing portion 1013d of the lock member 1013 is inserted from the lock opening 1011b. It is exposed from the rotating part 1011a.

As shown in FIG. 23, the LED illumination main body 1001 (FIG. 18) is attached to and detached from the wiring device 1007 already provided on the ceiling surface 1005 at the center on the front surface (lower surface) side of the hooking blade holding member 1011. At this time, a substantially rectangular parallelepiped knob portion 1011j that is convenient for use when manually rotating the LED illumination main body 1001 is formed, and a protective cover fixing groove for fixing the inner peripheral portion of the protective cover 1026 is formed in the peripheral portion. 1011o and a base member fixing groove 1011n for fixing to the base member 1021 are formed. Screws are used for fixing the protective cover 1026 to the base member 1021. In other words, the protective cover fixing groove 1011o is a screw hole, and in other words, the base member fixing groove 1011n is a screw hole.
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.

  At least a portion of the hooking blade holding member 1011 located around the hooking blade 1012 is formed of an insulating material. Here, the entire hooking blade holding member 1011 is integrally formed of, for example, a thermoplastic synthetic resin such as flame retardant polycarbonate (PC). For this reason, even if the ceiling light 1100 is connected to the wiring device 1007 in the energized state, there is no risk of an electrical short circuit with a metal member, for example, the base member 1021, etc. It can be performed.

  Note that the insulating material used for manufacturing the hooking blade holding member 1011 is not necessarily limited to polycarbonate, and may be provided with the rigidity and insulation necessary for the hooking blade holding member 1011. Insulating materials such as fired polybutylene terephthalate (PBT) can also be used. Here, the entire hooking blade holding member 1011 is integrally formed of an insulating material, but at least the portion of the hooking blade holding member 1011 that contacts the hooking blade 1012 or the portion facing the hooking blade 1012 is insulative. The hooking blade holding member 1011 only needs to be formed from a material, and only a part of the hooking blade holding member 1011 may be formed of an insulating material, or the hooking blade holding member 1011 made of a metal material may be covered with an insulating material. .

  Further, as shown in FIGS. 19 and 20, the base member 1021 on which the LED substrate 1024 and the lighting circuit substrate 1023 are mounted is fitted on the front side (lower surface) of the hooking blade holding member 1011. Further, a protective cover 1026 that covers the LED substrate 1024 and the lighting circuit substrate 1023 is fixed.

(3-4 Hook blade)
As shown in FIG. 24, the hooking blade 1012 is manufactured by punching, pressing, bending, or the like using a conductive metal material such as brass. As shown in FIG. 21, the hooking blade holding member 1011 is provided with a pair of hooking blades 1012, each having a concave hooking blade installation groove provided in the rotating portion 1011 a of the hooking blade holding member 1011. 1011d (FIG. 22), inserted through the blade fixing hole 1012b, and fixed by a screw that is screwed into the hooking blade fixing groove 1011c, and the tip of the hooking portion 1012a projects from the rotating portion 1011a, and the hooking blade holding member The rear surface side of 1011, that is, the wiring member 1007 side of the attached member of the ceiling surface 1005 protrudes.
More specifically, as shown in FIGS. 16 to 21, the pair of hooking blades 1012 has a hooking blade holding member so that a substantially L-shaped hooking portion 1012 a 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 groove 1011d of 1011 and fixed to the hooking blade holding member 1011 with a screw. Since a large force is applied to the hooking blade 1012 in the lateral direction (rotating direction) when inserted into the mounting groove of the wiring device 1007 and rotated, the hooking blade installation groove 1011d is provided to fix the hooking blade 1012. . A power line 1014 is inserted into the blade terminal hole 1012e of the hooking blade 1012 and is fixed 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 main body 1001 is directly and electrically connected to the wiring device 1007 which is the attachment portion by the hooking blade 1012 provided on the hooking blade holding member 1011. Can be mechanically connected. Further, the hooking blade 1012 includes a locking mechanism for fixing, which will be described later, and the LED illumination main body 1001 includes a pressing force of the hooking blade 1012 and a lock mechanism by inserting the hooking blade 1012 into the wiring device 1007 and rotating. It is fixed by.

(3-5 Lock member)
As shown in FIG. 21, 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 tip end portion of the hooking blade 1012 is inserted into an arcuate mounting groove (not shown here) provided in the wiring device 1007 such as the ceiling surface 1005, the LED lighting body 1001 is turned into the wiring device 1007. When fixed, the fixing claw 1013a (FIG. 25) enters the mounting groove provided in the wiring device 1007 and rotates in the direction in which the hooking blade 1012 is detached from the wiring device 1007, that is, the rotation opposite to that at the time of fixing. To prevent movement. As shown in FIG. 25, the lock member 1013 is made of a resin having elastic characteristics such as a substantially N-shaped polyacetal (POM). FIG. 25 shows an operation state of the lock member 1013, and FIG. 25 (a) shows a state in which the fixed claw 1013a protrudes upward in a normal shape. In a state in which the LED illumination main body 1001 is attached to the wiring device 1007, the fixing claw 1013a maintains the state of FIG. Therefore, in a state where the LED lighting main body 1001 is fixed to the wiring fixture 1007, the arc-shaped mounting groove provided in the wiring fixture 1007 has one end (the tip side in the direction of rotation when mounting the LED lighting main body 1001). The hooking portion 1012a of the hooking blade 1012 is inserted at the other end, and the fixing claw 1013a of the lock member 1013 is inserted at the other end, so that the hooking blade 1012 cannot rotate with respect to the wiring device 1007.
On the other hand, FIG. 25B shows a state in which the pressing portion 1013d of the lock member 1013 is pressed and the fixed claw 1013a is retracted downward. When removing the LED illumination main body 1001 from the wiring device 1007, the pressing portion 1013d is pushed to retract the fixing claw 1013a, that is, the fixing claw 1013a is removed from the mounting groove provided in the wiring device 1007, and the hooking blade 1012 is removed. Remove in a pivotable state.

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 pressed to release the lock mechanism, the semi-cylindrical base protrusion 1013f provided at the lower portion of the lock base portion 1013e slides on the inner lower portion of the rotating portion 1011a, and the spring portion 1013g is pressed. It is. When the spring portion 1013g is pushed, the spring portion 1013g rises (the inclination of the spring portion 1013g that was inclined in a side view approaches a vertical direction), and a semi-cylindrical fixed protrusion 1013c provided on the side surface of the fixed base portion 1013b The inner side portion of the rotating portion 1011a slides 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 on the movable portion, the fixed claw 1013a can be smoothly inserted and removed from the mounting groove provided in the wiring device 1007. It has become.

(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 the floors when the base member 1021 of the LED lighting main body 1001 is attached to the ceiling surface 1005 as shown in FIG. It is arranged on the surface side. The LED substrate 1024 is disposed on the LED substrate fixing portion 1021d (FIG. 26) of the base member 1021. The lighting circuit board 1023 is disposed on the peripheral edge rib 1211b (FIG. 26) of the base member 1021, and is provided around the LED board 1024. As a result, the lighting circuit board 1023 can be divided into a plurality of boards, and the ceiling light 1100 can be made compact to reduce the cost.

(3.-7 LED board)
As shown in FIGS. 17, 18, 28, and 29, the LED substrate 1024 is disposed so that six arc-shaped substrates having a predetermined width dimension are connected by the substrate connection lines. Are formed in a substantially circle shape, and are arranged on the LED substrate fixing portion 1021d (FIG. 26) of the base member 1021. 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. 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. Also, as shown in FIG. 29, wiring between the LED boards 1024 is performed by providing a connector 1024a on one LED board 1024 and connecting a lead wire 1024b to the other LED board 1024 with solder. ing. That is, the plurality of LED boards 1024 are connected to each other by a lead wire 1024b having one end connected to one LED board 1024 and a connector 1024a installed on the other LED board 1024 and connected to the other end of the lead wire 1024b. ing. That is, the adjacent LED boards 1024 are electrically connected by soldering the lead wires 1024b connected to the connector 1024a of one LED board 1024 to the other LED board 1024. 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. In addition, as shown in FIGS. 28 and 29, the LED substrates 1024 are connected to each other on the outer peripheral side of the LED illumination main body 1001 in the LED substrate 1024. 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.

  In the illustrated embodiment, the LED substrate 1024 has LED elements 1025 arranged in a straight line 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 arranged so as to form a staggered relationship instead of a linear shape. The LED substrate 1024 is disposed on the LED substrate fixing portion 1021d (FIG. 26) provided so that the center portion side is inclined toward the floor surface side when the LED illumination main body 1001 is attached to the ceiling surface 1005. Accordingly, the LED substrate 1024 constitutes a substrate with which the translucent cover 1003 has uniform brightness, and is fixed to the base member 1021 with a synthetic resin pin or the like. The back surface of the LED substrate 1024 on which the LED element 1025 is not mounted is directly fixed and thermally coupled to the LED substrate fixing portion 1021d of the base member 1021, so that heat generated from the LED substrate 1024 is dissipated by the base member 1021. It becomes possible to do. Thereby, the luminous efficiency of the LED element 1025 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 1024 or applying a highly reflective resin.

(3.-8 LED element)
Various known LEDs can be used as the LED element 1025 mounted on the LED substrate 1024. In the second 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)
As shown in FIGS. 17, 18, 26, 28, and 29, the lighting circuit board 1023 converts the alternating current supplied from the wiring device 7 through the hooking blade holding member 1011 into a direct current, thereby converting the LED board. In order to supply to 1024, an arc shape is disposed around the LED substrate 1024 on the front side of the peripheral edge rib 1211 b of the base member 1021. The lighting circuit board 1023 is composed of circuit components 1023a and 1023b that constitute each circuit function of the lighting circuit, and a board on which these are mounted. As shown in FIG. 29, the lighting circuit board 1023 is composed of a paper phenol board (FR-1) in which circuit components 1023a and 1023b are wired on one side. By disposing the back surface of the lighting circuit board 1023 on which the circuit components 1023a and 1023b are not mounted via the insulating sheet on the front surface side of the base member 1021, heat generated from the lighting circuit board 1023 is transferred to the base member 1021. Efficiently dissipates heat. As the circuit components 1023a and 1023b constituting the lighting circuit board 1023, various diodes, capacitors, transformers, ICs, resistors, etc. for performing overcurrent protection, noise cut, rectification, smoothing, dimming control, etc. are known. The electronic parts 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. 28 and 29, 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. 28 and 29, 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 this case, particularly, as shown in FIG. 28, the wiring can be installed along the strength reinforcing rib 1021 f provided on the base member 1021. That is, the wiring is arranged in the radial rib 1021f that is recessed in the ceiling surface side. Specifically, as shown in FIG. 28, the power line 1014 is installed along the radial rib 1021f of the base member 1021, so that the surface of the LED substrate 24 on which the LED element 25 is not mounted can be straddled. be able to. Accordingly, the wiring between the hooking blade holding member 1011 and the lighting circuit board 1023 can be wired by using the rib 1021f for reinforcing the strength such as a concave portion provided in the base member 1021 as a wiring storage portion. Wiring can be performed stably and appropriately 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 wired on the back side of the LED substrate 1024 without changing the posture of the LED substrate 1024.

  In the direct current supply from the lighting circuit board 1023 to the LED element 1025, as shown in FIG. 29 in particular, 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. 28, 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, the lead wire 1023d can be wired 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 side of the lighting circuit board 1023 and the outer side of the LED board 1024 are connected to the LED. Connection can also be made without straddling the substrate 1024.

The arrangement of the circuit components 1023a and 1023b on the lighting circuit board 1023 is such that a short circuit part 1023a is arranged on the center side of the lighting circuit board 1023 and a tall circuit part 1023b is arranged outside the lighting circuit board 1023. Yes. As a result, the height of the circuit component 1023b is higher than the height of the circuit component 1023a.
As shown in FIGS. 28 and 29, the lighting circuit board 1023 has an arc shape and 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 across the base member opening 1021a of the base member 1021. For this reason, it is possible to reduce the contact between the power line 1014 and the lead wire 1023d.
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 on the circuit component mounting surface side of the lighting circuit board 1023 or applying a highly reflective resin. .
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. In this case, the lighting circuit board 1023 is divided so that the input circuit portion and the output circuit portion are divided, or the dimming circuit and the toning circuit are separately mounted so that they can be selected depending on the type of ceiling light. can do.
Further, since the lighting circuit board 1023 is entirely protected by a protective cover 1026 as shown in FIGS. 37 to 38, the cover provided on the normal lighting circuit board 1023 can be omitted, and the number of parts can be reduced. Cost can be reduced.

(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 resin such as polycarbonate (PP). The shape of the protective cover 1026 is a hollow pipe ring that is continuous in a donut shape, as shown in FIGS. Similar to the shape of the lower half when the donut is cut in a virtual plane that bisects the ellipse when viewed from the side (viewed from the direction orthogonal to the central axis of the hollow portion of the donut). The cut surface side is a fixed side to the base member 1021 (FIG. 18).
When the ring-shaped protective cover 1026 is viewed from the side and cut along a virtual vertical plane including the virtual center of the ring, the cross section of the protective cover 1026 has a downwardly convex arc as shown in FIGS. It becomes a shape which is spaced apart and juxtaposed. When the protective cover 1026 is attached to the base member 1021, the inside of the above-described downward convex arc, that is, in the actual three-dimensional structure, the inner space of the ring-shaped half pipe whose upper surface is opened is mounted on the base member 1021. The LED board 1024 and the lighting circuit board 1023 are accommodated and covered from below.

As shown particularly in FIG. 36, the protective cover 1026 is composed of two members that are divided into two equal parts in a virtual vertical plane including the virtual center of the ring when viewed from the side, and the two members are integrated together. Protective cover 1026. These two members are homologous, and there is no risk of mistakes such as mistaking the left and right members. As shown in FIG. 37, the two members are each attached to the base member 1021 and connected by a protective cover connecting portion 1026b. The base member 1021 may be attached to the base member 1021 one by one (FIG. 37), and operations such as alignment are easy.
Note that, in the two members, the end surface of the connecting portion of the arc-shaped portion is not merely abutting, and the end portion of one of the two arcs is cut at substantially the upper half of the plate thickness, and the end of the other arc The part is formed into a shape in which substantially the lower half of the plate thickness is cut (so-called “phase-out” processing in the architectural term for wood). Therefore, the connecting portion that connects the arc-shaped end portions of the two members so as to face each other in a ring shape is such that the upper half-cut end portion and the lower half-cut end portion face each other. When fitted together, the two members are smoothly connected while maintaining substantially the same plate thickness.

As shown in FIG. 30, a protective cover opening 1026a is provided in the center of the protective cover 1026 connecting two members 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. As shown in FIG. 30, the hook holding and fixing guide 1026j is provided with U-shaped grooves at two opposing positions with respect to the center of the pipe. One groove is a power line wiring groove 1026g, and the protective cover position pin 1011s (FIG. 23) of the hook blade holding member 1011 is fitted into the other groove. The two groove shapes are similar, and there is no distinction between which one is the power line wiring groove 1026g.
When the protective cover 1026 is attached to the base member 1021 to which the hooking blade holding member 1011 is mounted, protection is performed so that the inner cylinder 1011r (FIG. 23) 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 (FIG. 23) 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 21.
The power line wiring groove 1026g is a groove for storing the power line 1014 that transmits power from the hooking blade holding member 1011 to the lighting circuit board 1023.

An annular hook holding and fixing portion 1026h (FIG. 30) is provided outside the hook holding and fixing guide 1026j. After confirming that the protective cover 1026 is aligned with the correct fixing position of the base member 1021 by the above-described procedure, the protective cover 1026 is attached to the base member 1021 through the hook fixing hole 1026e provided in the hook holding fixing portion 1026h. It is fixed with screws. The upper end of the protective cover outer edge portion 1026c (FIG. 31) of the protective cover 1026 has a ring shape with a flat upper end surface, and is a base member fixing hole 1026f. ) And is fixed in contact with the surface.
As shown in FIG. 38, the protective cover 1026 covers the LED board 1024 and the lighting circuit board 1023 so that they are not exposed to the outside of the protective cover 1026, and is installed when the LED lighting main body 1001 is attached to the wiring device 1007. The electrical safety of the 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.

  In particular, the translucent cover 1003 is attached to the protective cover 1026. Specifically, as can be seen from FIG. 36, the rear translucent cover 1031 (FIG. 32) of the translucent cover 1003 is fitted and fixed at four locations on the outer periphery of the protective cover 1026. A rear translucent cover fitting portion 1026d (FIG. 36) 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 (FIG. 39) are aligned and rotated, thereby rear translucent. The cover fitting portion 1026d and the protective cover fitting portion 1031a can be fitted.

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. Specifically, as shown in FIG. 40, the cover guide portion is formed of a substantially convex curved surface formed on the side surface of the outer peripheral portion of the surface of the protective cover 1026 on which light emitted from the LED element 1025 is emitted. ing. More specifically, when viewed from the side, the outer peripheral side surface of the protective cover 1026 expands in an arc shape as described above from the lower end toward the base member 1021 (upward). The actual protective cover 1026 has a ring shape (FIG. 39), and the ring diameter at the lower end of the protective cover 1026 is smaller than the diameter of the rear translucent cover opening 1031c where there is no protective cover fitting portion 1031a. Therefore, when the rear translucent cover 1031 is attached to the protective cover 1026, as shown in FIGS. 39 and 40, the rear translucent cover opening 1031c is inserted into the rear translucent cover opening 1031c. The cover 1031 may be moved upward from below 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 of the protective cover is in the rear translucent cover opening 1031c, the protective cover is protected as described above. Since the outer peripheral side surface of the cover 1026 is formed in a substantially convex curved surface, the rear translucent cover opening 1031c is then moved to the outer peripheral side surface of the protective cover 1026 by moving the rear translucent cover 1031 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 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, the protective cover 1026 has a curved surface with a convex surface on the outer periphery, and the rear translucent cover 1031 is moved while sliding the rear translucent cover opening 1031c along the curved surface. It performs an alignment function assisting function that leads to the fitting position of the protective cover 1026 in a self-aligning manner. For this reason, the rear translucent cover 1031 can be appropriately attached to the protective cover 1026 while being easily positioned without requiring an operation for making the LED illuminating body 1001 strictly coincide with the horizontal direction from the beginning.

  In the example described in Patent Document 2 and Patent Document (Japanese Patent No. 5320563) described above, when the translucent cover is attached to the luminaire main body, the translucent cover provided on the outer periphery of the luminaire main body is attached. Whereas the translucent cover needs to be perfectly aligned with the horizontal direction, the horizontal alignment work is virtually unnecessary here, and the translucent cover mounting work is simplified. Is possible.

  In addition, the outer edge side of the protective cover 1026 is subjected to a texture processing to form a high-density light diffusing surface, or the material is made to contain a diffusing agent, thereby suppressing the occurrence of shadows by the lighting circuit board 1023. The light emitted from the translucent cover 1003 can be made uniform over the entire surface.

Here, the protective cover 1026 is composed of two homologous members, but may be composed of two or more members regardless of whether or not they are homologous. For example, the protective cover 1026 may be composed of one member without being divided. You can also.
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 within a range in which the performance of the ceiling light is not deteriorated, for example, it does not interfere with 1023 and does not cause unevenness in intensity of 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 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 main body 1001 will be described with reference to FIGS.
First, as shown in FIG. 18, 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 boards 1024 are annularly arranged. 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)
As shown in FIGS. 16 to 18 and FIGS. 32 to 35, the translucent cover 1003 attached to the LED illumination main body 1001 includes a rear translucent cover 1031 fitted (attached) to the protective cover 1026, and this It consists of two members, a front translucent cover 1032 attached to the lower opening of the rear translucent cover 1031 and covering the LED lighting body 1001 from below, and uses a thermoplastic synthetic resin such as polypropylene (PP). Is produced. When attaching the translucent cover 1003 to the LED illumination 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 cover. The front cover fitting portion 1031b provided inside the lower opening of 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 or the installation work of the front translucent cover 1032 to the rear translucent cover 1031 is an operation from the viewpoint of looking up at the ceiling surface from the floor surface direction, it should be easily performed. Can do.
The details of the work procedure for attaching the rear translucent cover 1031 in alignment with the protective cover 1026 and the fact that the work can be performed easily have already been described.

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.

  As described above, in the second embodiment, in the ceiling light 1100 provided with the hooking blade 1012 that can be directly attached to the wiring device 1007 such as the hooking sealing body of the ceiling surface 1005 without using an auxiliary device such as an adapter. The translucent cover 1003 can be attached to the protective cover 1026 attached to the LED lighting main body 1001 by a simple operation.

<Others>
(1. LED board)
In the above example, the LED elements 15 and 1025 are arranged on the LED boards 14 and 1024 in a single ring shape around the base member openings 10a and 1021a.
However, the LED elements may be arranged in a plurality of rows on the LED substrate. For example, as shown in FIG. 41, the LED elements 2015 may be arranged on the LED substrate 2014 in two rows. In this case, the entire arrangement of the LED elements 2015 is a double ring centered on the center of the base member opening 2010a. There are a plurality of LED substrates 2014 as well, and surrounds the base member opening 2010a in a single layer (arranged in an annular shape). Also in this example, when viewed from the light emitting direction of the LED element 2015, the LED substrate 2014 has the center O2 of the base member opening 2010a and the outer edge of the base member 2010 (the outer edge of the present invention) as shown in FIG. This is equivalent to an example of the portion.) Located on the midpoint M2 with the virtual point on 2010c. In the case of this example, the two rows of LED elements 2015 on each LED substrate 2014 are arranged so as to be inside and outside the track C2 of the center point M2 of the base member opening 2010a and the center outer edge 2010c. Has been.

(2. Base member)
The base members 10 and 1021 have a circular outer peripheral shape when viewed from the floor side, but may have other shapes. For example, as shown in FIG. 42, the outer peripheral shape of the base member 3010 may be a square shape. Furthermore, the base member may have a polygonal shape such as a pentagonal shape or a hexagonal shape, or may have an elliptical shape or an oval shape. There are also a plurality of LED substrates 3014 here, which surround the base member opening 3010a in a single layer (arranged in an annular shape). Also in this example, when viewed from the light emitting direction of the LED element 3015, the LED substrate 3014 has a center O3 of the base member opening 3010a and an outer edge portion of the base member 3010 (as shown in FIG. 42). It corresponds to an example of the outer edge.) It is located on a midpoint M3 with a virtual point on 3010c. The track C3 of M3 should be similar to the outer peripheral shape of the base member 3010, passing through the midpoint M3 where the distance between the center O3 of the base member opening 3010a and the base outer edge 3010c is the minimum. .
In addition, the minimum distance D between the center O3 of the base member opening 3010a and the base outer edge 3010c is the minimum distance D, and the LED element 3015 is 0.3 times or more the minimum distance D with respect to the center O3. And a virtual line segment C3a having the same shape as the outer periphery and a virtual line segment C3b having the same shape as the outer periphery and passing the point 0.6 times or less. Preferably, with respect to the minimum distance D, it is arranged in a range between a virtual line segment C3a passing a point of 0.35 times or more and a virtual line segment C3b passing a point of 0.55 times or less. 42, the virtual line segment C3a passes through a point having a distance D1 that is 0.35 times the minimum distance D, and the virtual line segment C3b passes through a point having a distance D2 that is 0.53 times the minimum distance D.

In the base members 10, 1021, and 2010, the shape of the base member openings 10a, 1021a, and 2010a (the inner peripheral shape of the base member) and the outer peripheral shape are circular and coincide with each other. However, as shown in FIG. 42, the shape of the base member opening 3010a may be different from the outer peripheral shape. When viewed from the floor side, when the shape of the base member opening is not circular, the center of the opening may be the center of gravity.
Moreover, in the said embodiment and the said example, although base member opening part 10a, 1021a, 2010a, 3010a was made circular when seeing from the floor surface side, it is not limited to this, For example, polygons, such as a rectangle and a pentagon It may be oval or oval.
(3. Mounting part)
In the first embodiment, the attachment portion is configured by an adapter 6 that is detachably attached to the base member 10, and in the second embodiment, the attachment portion is configured by a hook holding portion 1010 that is integrally incorporated in the base member 2010. As described above, when the ceiling light is attached to the attached member, the attaching portion may be present on the attached member side (this is the first embodiment), and is present on the LED illumination main body side. It is also possible (the second embodiment).

  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 illumination body 10: Base member 10a: Base member opening 10b: Adapter receiving portion 10c: Base outer edge (outer edge)
10d: Board fixing part 10e: Circumferential rib 101a: Central part side rib 101b: Peripheral part side rib 10f: Radial direction rib 12: Spring for ceiling 13: Lighting board 13a: Circuit part 13b: Circuit part 13c: Connector 13d: Lead Line 14: LED board 14a: Connector 14b: Lead wire 15: LED element 16: Protective cover 16a: Protective cover opening 16b: Translucent cover fitting part 16c: Protective cover outer edge part 3: Translucent cover 31: Rear Translucent cover 31a: protective cover fitting portion 31b: front cover fitting portion 32: front translucent cover 32a: rear cover fitting portion 5: ceiling surface 6: adapter 6a: locking portion 6b: hooking blade 6c: Stopper 6d: Button 7: Wiring device 100: LED lighting device

(5. Positional relationship between LED board and lighting board)
When viewed from the light emitting direction of the LED element 15, the LED substrate 14 is positioned on the midpoint M1 between the center O1 of the base member opening 10a and the virtual point on the base outer edge 10c, as shown in FIG. doing. In particular, in the LED board 14, the area of the portion located outside the track C1 passing through the middle point M1 is smaller than the area of the portion positioned inside the track C1.
For this reason, when the base member 10 is viewed from the floor side, a larger space is formed on the outer peripheral side of the LED substrate 14 than on the inner peripheral side of the LED substrate 14. The lighting substrate 13 is arranged in this wide space. Therefore, it becomes possible to widen the interval between the circuit components 13a and 13b mounted on the substrate constituting the lighting substrate 13, and the accumulation of heat generated in the lighting substrate 13 can be suppressed.
Since the lighting board 13 is arranged using the space outside the LED board 14 as described above, for example, the circuit components 13a and 13b can be arranged along the LED board 14 arranged in a ring shape. . Thereby, the LED illumination device 100 can be made compact as a whole.

Claims (3)

In the LED illumination device that is detachably attached to the member to be attached via the attachment portion,
A base member having the mounting portion in a central portion;
An LED element as a light source;
An LED substrate disposed on the base member and on which the LED element is mounted,
The LED substrate is located on a midpoint between the center of the central portion and a virtual point on the outer edge of the base member when viewed from the light emitting direction of the LED element.
The base member has an opening for the attachment portion in the central portion,
The LED lighting device according to claim 1, wherein the attachment portion is integrated by being integrated into the opening.
The base member has an opening for the attachment portion in the central portion,
The LED illumination device according to claim 1, wherein the attachment portion is detachably attached to the base member through the opening.

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