JP2012099366A - Led lighting fixture and led lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lighting fixture easy in installation construction, exchange work, and repair work or the like and excellent in heat radiation.SOLUTION: The LED lighting fixture is provided with a socket unit and a lighting unit capable of installation in free attachment and detachment. The socket unit is provided with a socket case, a fitting space capable of fitting the lighting unit, an electrode hole capable of fitting an electrode terminal of the lighting unit, a power supply electrode to which the electrode terminal is electrically connected, and a power supply cord connected to the power supply electrode. The lighting unit is provided with a lighting case having a fitting part capable of fitting with the fitting space of the socket unit, a power supply circuit board, an LED mounting board, and a heat radiation fixture which radiates heat generated from the LED. The electrode terminal capable of inserting into the electrode hole of the socket case and locking with the electrode hole is provided in the power supply circuit board, and by fitting with the fitting space of the socket unit and by inserting and rotating the electrode terminal into the electrode hole, the LED lighting fixture can be installed in the socket unit.

Description

  The present invention relates to an illuminating device and an illuminating device using an LED as a light source. The present invention relates to an illuminating device attached to the plate.

  As an illuminating device (downlight) attached downward to a plate material such as a top plate of a storage room or a lower plate (bottom plate) of a cupboard, an LED using a light source is known (Patent Document 1). In the lighting device described in Patent Document 1, an LED mounting substrate, a reflector plate, and a lens plate are combined into one product, which is attached to a ceiling or a shelf under a screw.

JP 2010-49830 A

  In the illumination device described in Patent Document 1, since the LED mounting substrate, the reflector plate, and the lens plate are combined into one product, these components are gathered together at the time of LED replacement or repair work. It is necessary to remove or replace the entire lighting device, which makes the replacement work and renovation work large and troublesome.

  The problem to be solved by the present invention is to provide an illuminating device and an illuminating device that can solve the above-mentioned problems, are easy to install, replace, repair, etc., are thin, have excellent heat dissipation, and can efficiently use LED light. There is to do.

  The LED illuminator of the present invention is an LED illuminator that uses an LED as a light source, and includes a socket unit that is attached to a plate material, and an illumination unit that can be detachably attached to the socket unit. A socket case that can be inserted into the open equipment hole and fixed to the plate material, a fitting space in which the lighting unit can be fitted, an electrode hole in which the electrode terminal of the lighting unit can be fitted, and a fitting in the electrode hole A power electrode connected to the power electrode and a power cord connected to the power electrode, one end of the power cord is drawn out of the socket case, and the lighting unit is fitted to the socket unit A lighting case with a fitting part that can be fitted into the space, a power circuit board, an LED mounting board, and a radiator that dissipates heat from the LED. The power supply circuit board is provided with an electrode terminal that can be inserted into the electrode hole of the socket case and locked into the electrode hole, and the fitting portion of the lighting unit is fitted into the fitting space of the socket unit. By inserting the electrode terminal of the lighting unit into the electrode hole and rotating it, the socket unit can be mounted.

  The LED lighting device of the present invention is the LED lighting device, wherein the socket unit is a socket case that can be inserted into an equipment hole opened in the plate material and fixed to the plate material, and a fixture that fixes the socket case to the plate material. The lighting unit includes a lighting case having a fitting portion that can be fitted in the fitting space of the socket unit, a power circuit board mounted inside the lighting case, an LED mounting board, and heat generated from the LED. A heat dissipator that dissipates heat, a lens that can collect at least light from the LED, and a cover that covers the outside of the lens. The lighting case, the power circuit board, the heat dissipator, the LED mounting board, the lens, and the cover Units are arranged in a line in the optical axis direction.

  The LED lighting device of the present invention is the LED lighting device, wherein the radiator is made of a material in which a resin and a high thermal conductive carbon fiber are mixed. The LED illuminator may use an LED illumination driving IC that does not require an electrolytic capacitor in the power supply circuit, and may use a small capacitor instead of the electrolytic capacitor.

  In the LED lighting device according to the present invention, the LED lighting device is attached to a plate material, the socket unit of the LED lighting device is inserted into the plate material mounting hole and attached to the plate material, and the power cord of the socket unit is a wiring space of the plate material When one end of the power cord is drawn out of the wiring space, the illumination unit can be attached to and detached from the socket unit, and the illumination unit is attached to the socket unit, the electrode terminal of the illumination unit and the power electrode of the socket unit Are electrically connected to each other.

  The LED lighting device of the present invention uses an LED illumination driving IC that does not require an electrolytic capacitor in the power supply circuit, and can use a small capacitor instead of the electrolytic capacitor.

The LED lighting device of the present invention has the following effects.
(1) Since a separate lighting unit can be attached to and detached from the socket unit that can be mounted on the plate, and the LED module can be replaced or repaired by simply removing the lighting unit, maintenance is easy.
(2) Since the radiator of the lighting unit is disposed on the back surface side of the LED mounting substrate that generates a large amount of heat, the heat dissipation efficiency of the radiator is good.
(3) Since the radiator is made of a material in which a resin and a high thermal conductivity carbon fiber are mixed, the heat radiation efficiency is further improved. It is also lighter than aluminum ones.
(4) Since all of the power circuit board, the radiator, the LED mounting board, and the lens are arranged between the lighting case and the cover, it is thinner than the conventional lighting device, and the ceiling plate of the storage box, Even if it is attached to the bottom plate of a shelf, the protruding length is short, it is easy to use and does not interfere with the loading and unloading of the contents in the storage box.
(5) Since a power cord is provided, it is easy to take in commercial power.
(6) Since there is a lens, LED light is condensed and the tip of the lens becomes brighter than when there is no lens.
(7) Since the LED illumination driving IC that does not require an electrolytic capacitor is used in the power supply circuit, and a small capacitor is used instead of the electrolytic capacitor, the LED illuminator becomes thin and can be used as a downlight or the like. Suitable.

The LED lighting device of the present invention has the following effects.
(1) Since the socket unit is set and attached in the equipment hole of the plate material, the socket unit hardly protrudes from the plate material, and the appearance is good.
(2) Since the power cord is wired in the wiring space of the plate material, the power cord does not get in the way and the appearance is good.
(3) Since the attachment of the socket unit to the plate material is completed simply by attaching the socket unit to the plate material, the operation of attaching the LED lighting device to the plate material becomes easy.
(4) Since an LED illumination driving IC that does not require an electrolytic capacitor is used in the power supply circuit, and a small capacitor is used instead of the electrolytic capacitor, it protrudes into the storage chamber even when used as a downlight for the storage chamber. The length is shortened and it is difficult to get in and out of the contents in the storage room.

Explanatory drawing which shows an example of the LED lighting apparatus of this invention. The disassembled perspective view which shows an example of the LED lighting apparatus of this invention. The disassembled perspective view which shows an example of the socket unit of the LED lighting fixture of this invention. The disassembled perspective view which shows an example of the illumination unit of the LED lighting fixture of this invention. The unitization explanatory drawing of a lighting unit. The partial detail drawing of a lighting unit. Sectional drawing in the middle of attaching a lighting unit to the socket unit attached to the board | plate material. Sectional drawing of the state which attached the LED lighting fixture of this invention to the board | plate material.

(Embodiment)
Embodiments of the LED lighting device of the present invention will be described with reference to the drawings. The LED lighting device of the present invention can be used by being attached to various plate materials such as a top plate or a bottom plate or a side plate of a storage unit such as a storage box or a cupboard, but the LED lighting tool A shown in FIG. This is an example of attaching to C) (referred to as “plate material”) so that the lower part can be illuminated.

  As shown in FIG. 2, the LED illuminator A shown in FIG. 1 includes a socket unit 1 mounted on a plate material C, and an illumination unit 2 that can be attached to and detached from the socket unit 1. The socket unit 1 can be installed in the equipment hole H (FIG. 2) opened in the plate C, and the illumination unit 2 is detachable from the socket unit 1 installed in the equipment hole H.

(Socket unit)
As shown in FIG. 3, the socket unit 1 includes a socket case 10, a fixture 11 that fixes the socket case 10 to the plate material C, and a back cover 12 that covers the socket case 10, and the socket case 10 includes the lighting unit 2. 2, a key hole-shaped electrode hole 14, and a power cord 15. The socket case 10, the fixture 11, and the back cover 12 are arranged and connected in a row as shown in FIG. As a unit.

  The power cord 15 is drawn out of the socket case 10. A relay connector 16 is attached to the power cord 15 as shown in FIG. 2, and a connector 18 of a power supply cord 17 can be connected thereto. A plug 19 that can be connected to a commercial power source is connected to the power supply cord 17.

  The socket case 10 is made of resin and has a ring shape with an upper surface opening in which an outer wall 20, an inner wall 21, and a bottom plate 22 are integrally molded as shown in FIG. Inside the outer wall 20, the inner wall 21, and the bottom plate 22 is a housing space 23 (FIG. 7), and a cord outlet 24 (FIG. 3) is opened in the outer wall 20. Two electrode holes 14 (FIG. 3) are opened in the bottom plate 22, and a power electrode T is provided in each electrode hole 14, and a power cord 15 wired in the accommodation space 23 is provided on the power electrode T. One end is connected. Inner grooves 25 (FIG. 3) are formed vertically at four locations in the circumferential direction of the inner wall 21, and locking projections 26 are provided at two opposing positions on the inner wall 21. Outer grooves 27 are formed vertically at four locations in the circumferential direction of the outer wall 20.

  The back cover 12 has a ring shape made of resin, and locking claws 29 are formed at the four peripheral edges of the central opening 28. The number of the locking claws 29 can be set to a desired number.

  The fixture 11 is also in the form of a resin ring, with four locking pieces 30 protruding from the periphery thereof, and two fixing pieces 31 protruding outward. The number of the locking pieces 30 and the fixed pieces 31 can be set to a desired number. The locking piece 30 covers the outer periphery of the socket case 10 from below and is fitted into an outer groove 27 formed on the outer wall 20 of the socket case 10, and a claw 32 formed at the tip of the locking piece 30. The outer groove 27 is locked and fixed. The two fixing pieces 31 are for fixing to the plate material C with screws M as shown in FIG. A fitting space 33 into which the illumination unit 2 can be fitted is formed inside the ring-shaped fixture 11.

(Socket unit unitization)
Assembling the socket unit constituent members shown in FIG. 3 to finish (unitize) the socket unit 1 as shown in FIG. 2 can be performed as follows.
(1) Four locking claws 29 of the back cover 12 of FIG. 3 are fitted and locked in the inner groove 25 of the socket case 10, and the upper surface opening of the socket case 10 is closed with the back cover 12. At this time, the power cord 15 is pulled out from a cord outlet 24 formed in the socket case 10.
(2) The fixture 11 is disposed under the socket case 10, and the locking piece 30 of the fixture 11 is fitted and locked in the outer groove 27 of the socket case 10, so that the fixture 11 is attached to the socket case 10.

(Lighting unit)
As shown in FIG. 4, the lighting unit 2 includes a lighting case 40, a power circuit board 41, a radiator 42, an LED mounting board 43, a lens 44, and a cover 45, as shown in FIG. They are sequentially arranged in the vertical direction (LED irradiation direction) and are unitized as shown in FIGS. In this lighting unit 2, the lighting case 40 is fitted into the fitting space 33 of the socket unit 1 as shown in FIG. 2, and the electrode terminals 46 of the lighting unit 2 are inserted into the electrode holes 14 of the socket unit 1. Can be attached (locked) to the socket unit 1 by rotating it clockwise, and can be removed from the socket unit 1 by rotating the illumination unit 2 in reverse.

  In the lighting case 40 shown in FIG. 4, a peripheral wall 51 protrudes downward from the outer peripheral edge of the top plate 50, and a cylindrical protrusion 52 having a bottom opening that protrudes upward in FIG. 4 is formed at the center of the top plate 50. The bottom wall opening has a dish-like shape in which the inner sides of the peripheral wall 51 and the protrusion 52 are hollow. Inside the peripheral wall 51 is a substrate housing space 53 (FIG. 5) having a size and a width that can accommodate the LED mounting substrate 43. The protrusion 52 has an outer diameter and a height that can be inserted into the central hole 13 from the fitting space 33 of the socket unit 1, and L grooves 54 are formed at two positions facing the outer peripheral surface of the peripheral wall of the protrusion 52. ing. When the lighting unit 2 is fitted to the socket unit 1 as shown in FIG. 2, the L groove 54 is fitted to the two locking projections 26 (FIG. 3) of the socket case 10 shown in FIG. When 2 is rotated, the L groove 54 is locked to the locking protrusion 26 and the lighting unit 2 is locked to the socket unit 1.

  A projecting hole 55 is formed in the top plate 50 of FIG. The protruding hole 55 is sized so that the electrode terminal 46 protruding from the power circuit board 41 can protrude. A connecting shaft 56 and a guide pin 57 project from the inner surface of the top plate 50 downward. The connection shaft 56 and the guide pin 57 are provided close to each other, and are provided at four positions on the inner surface of the top plate 50 (shown in FIG. 4 are two connections on the front side of the top plate 50). Only the shaft 56 and the two guide pins 57).

  The power supply circuit board 41 shown in FIG. 4 has power supply circuits necessary for lighting LEDs on the front and back surfaces of a circular printed circuit board 60. On the front and back surfaces of the printed circuit board 60, power supply components 61 necessary for lighting the LEDs, for example, a choke coil, a resistor, an LED illumination driving IC, a capacitor, and the like are mounted. Electrode terminals 46 protrude from the front surface of the printed circuit board 60 and are electrically connected and fixed to the power supply circuit on the back surface of the printed circuit board 60 by soldering or other fixing means. An IC that does not require an electrolytic capacitor is used as the LED illumination driving IC, and a small (chip-shaped) ceramic capacitor is used instead of the electrolytic capacitor. The capacitor may be another chip capacitor. As the LED illumination driving IC, for example, LC5205S manufactured by Sanken Electric Co., Ltd. can be used. The thick choke coil is disposed on the upper surface of the printed circuit board 60 (the same surface as the protruding surface of the electrode terminal 46) and inside the two electrode terminals 46, and the entire power supply circuit (the printed circuit board 60, the electronic components on the front and back surfaces). 61) is reduced to about 13 mm. When the illumination unit 2 is inserted into the socket unit 1 incorporated in the plate member C having a thickness of about 20 mm as shown in FIG. 8 and attached as shown in FIG. 8, the entire power supply circuit is accommodated in the plate member C (the plate member C It does not protrude at all (in the shelf) or hardly). The two electrode terminals 46 have large-diameter heads that can be inserted into the electrode holes 14 of the socket case 10 shown in FIG. Lead wires 62 are connected to the power supply circuit, and the lead wires 62 are led out to the back surface of the printed circuit board 60. Although the arrangement of the power supply component 61 on the front and back surfaces of the printed circuit board 60 can be arbitrarily selected, the tall electronic component is arranged on the same surface as the electrode terminal 46, and the power supply component having a high heat dissipation property is easily radiated. It is desirable to arrange them together.

  4 has a circular shallow dish shape, the top plate 63 is formed one step lower than the upper edge of the peripheral wall 64, and the outer recess 65 surrounded by the peripheral wall 64 is formed on the top plate 63. In addition, an inner recess 66 (FIG. 5) surrounded by the peripheral wall 64 is formed under the top plate 63. The inner recess 66 is wide and deep enough to accommodate the LED mounting substrate 43 (FIG. 4). An arc-shaped heat dissipating blade 67 (FIG. 4) projects from the lower portion of the peripheral wall 64. A lead wire insertion hole 79 is opened in the top plate 63. The lead wire insertion hole 79 is sized so that the lead wire 62 (FIG. 4) drawn to the back surface of the printed board 60 can be inserted.

  The radiator 42 is formed of a mixed resin of resin and high thermal conductivity carbon fiber. As the mixed resin, a heat-dissipating resin having an increased thermal conductivity, for example, a resin in which an appropriate amount of thermally conductive filler (highly thermally conductive carbon fiber) is dispersed and mixed in a molding resin is suitable. Preferable examples of the thermally conductive filler include inorganic fillers such as alumina, boron nitride, aluminum nitride, and silica, metal fillers such as silver, gold, and copper, and carbon fillers having high thermal conductivity. Among these, graphitized carbon fibers having a highly crystalline graphite structure that can efficiently increase the thermal conductivity of the resin and obtain high performance in mechanical strength and moldability are preferred, and in particular, mesophase pitch is used as a raw material. A graphitized carbon short fiber having an average fiber diameter of 2 to 20 μm, an average fiber length of 30 to 1000 μm, and a crystallite size derived from the growth direction of the hexagonal network surface of the graphite crystal is preferably 20 nm or more. The average fiber diameter is more preferably 5 to 15 μm, the average fiber length is more preferably 70 to 300 μm, and the crystallite size is more preferably 40 nm or more.

  Examples of the products related to the graphitized carbon short fibers include Lahima (registered trademark) manufactured by Teijin Limited. These graphitized carbon fibers are preferably dispersed and mixed in various molding resins at a ratio of about 10 to 50 wt%.

  A combination of a plurality of thermally conductive fillers can be used, and it is also preferable to use a combination of graphitized carbon fiber and an inorganic filler and / or a metal filler. When these heat conductive fillers are mixed with the resin at a ratio of about 30 to 60 wt% in total, it is possible to obtain a high value of 20 W / m · K or more as the heat conductivity of the heat radiation resin. As the resin material for the matrix, various thermoplastic resins and thermosetting resins are preferably used, and heat dissipation with excellent heat dissipation is achieved by molding methods such as injection molding, press molding, blow molding, vacuum molding, and casting. The tool 42 can be molded.

  Examples of the thermoplastic resin include polyethylene, polypropylene, polycarbonate, polybutylene terephthalate, polyphenylene sulfide, aliphatic polyamide (nylon), polyether ether ketone, liquid crystal polymer (LCP), etc., and alloys and modified products thereof. Is available. As the modified product, a thermoplastic elastomer or the like obtained by copolymerizing an elastomer component is also preferably used.

  Examples of the thermosetting resin include epoxy, silicone, urethane, unsaturated polyester, and melamine.

  Four elongated LED modules 68 are mounted on the LED mounting substrate 43 of FIG. Guide grooves 69 are formed at four locations on the outer peripheral edge of the LED mounting substrate 43. Each LED module 68 has a large number of LED chips (not shown) arranged in a line. Two connection electrodes 70 are provided on the LED mounting substrate 43. When the connection electrode 70 is formed into an illumination unit, the connection electrode 70 is electrically connected to the lead wire 62 drawn from the power supply circuit of the power supply circuit board 41 so that power is supplied to the LED module 68.

  The lens 44 in FIG. 4 is obtained by processing four locations on a resin substrate (disk) to form a plurality of Fresnel lenses 71 (four in FIG. 4). Four Fresnel lenses 71 are formed along the array of LED modules 68. The Fresnel lens 71 condenses, diffuses, reflects, etc. the light from the LED module 68. By collecting the light, the illuminance (brightness) can be increased as compared with the case where the light is not collected. Can be made. The lens may be other than a Fresnel lens. The lens itself may not diffuse light. In that case, a diffusing agent can be mixed into the resin that is the lens substrate material to impart diffusibility to the substrate.

  When the cover 45 of FIG. 4 is unitized, it covers the lens 44, the LED mounting board 43, and the radiator 42 from below as shown in FIG. The cover 45 has a circular ring shape in which a flat plate 73 is formed on the outer periphery of a through hole (cover opening) 72 formed at the center. An upward inner peripheral wall 74 is erected in a ring shape at the peripheral edge of the cover opening 72, and a connecting boss 75 protrudes on the inner peripheral wall 74, and the outer periphery spreads outward toward the outer peripheral edge of the flat plate 73. A wall 76 is provided.

  A lens fitting groove 77 (FIG. 6) for fitting and locking the lens 44 and a board locking edge 78 (FIG. 6) for locking the LED mounting board 43 are formed on the inner surface of the inner peripheral wall 74 of FIG. Has been.

(Unitization of lighting unit)
Assembling the lighting case 40, the power supply circuit board 41, the radiator 42, the LED mounting board 43, the lens 44, and the cover 45 shown in FIG. 4 into a lighting unit 2 as shown in FIG. Can be.
(1) The power circuit board 41 is set in the board housing space 53 (FIG. 5) of the lighting case 40, and the electrode terminal 46 is protruded upward from the protrusion hole 55. At this time, as indicated by phantom lines in FIG. 4, the guide pin 57 of the illumination case 40 passes through the guide hole 58a of the power circuit board 41, and the connecting shaft 56 protrudes below the power circuit board 41 through the pin hole 58b. To do.
(2) The radiator 42 is disposed under the lighting case 40 so as to face the power circuit board 41 accommodated in the lighting case 40 as shown in FIG. At this time, as indicated by phantom lines in FIG. 4, the guide pin 57 passes through the guide hole 59 a of the radiator 42 and the connecting shaft 56 protrudes below the radiator 42 through the pin hole 59 b.
(3) The lens 44 is fitted and locked in the lens insertion groove 77 of the cover 45 as shown in FIG. 6, and the LED mounting board 43 is locked to the board locking edge 78 of the cover 45.
(4) The cover 45 in the state (3) is arranged below the radiator 42 connected to the lighting case 40 and the power supply circuit board 41 as shown in FIG. 6 and protrudes below the radiator 42. The connecting shaft 56 is inserted into the hole of the boss 75 of the cover 45 and fixed with an adhesive. At this time, the guide pins 57 projecting downward from the radiator 42 are aligned so as to match the position of the guide portion 69 of the LED mounting board 43, the rotation of the LED mounting board 43 is restricted, and the LED mounting board 43 is Position.
(5) In the state of (4), the heat dissipating blade 67 of the radiator 42 that contacts the inner surface of the flat plate 73 of the cover 45 is bonded and fixed to the inner surface of the flat plate 73 with a heat conductive adhesive as shown in FIG. As the heat conductive adhesive, for example, a PPS (polyphenylene sulfide) -based backing agent is suitable.
(6) When the cover 45 is covered as shown in FIG. 6, the inner peripheral wall 74 of the cover 45 fits in the inner recess 66 (FIGS. 5 and 6) of the radiator 43.

(LED lighting device)
The LED lighting device of the present invention has the following configuration. As shown in FIG. 2, the socket unit 1 is set in the mounting hole H provided in the plate material C and fixed with screws M. The power cord 15 is wired in the wiring space S provided on the back side of the plate material C as shown in FIG. 7, and one end is drawn out of the plate material C as shown in FIG. is there.

  As shown in FIG. 2, the projection 52 (FIG. 2) of the lighting unit 2 is inserted into the center hole 13 from the fitting space 33 of the socket unit 1 attached to the plate member C, and the electrode terminal 46 (FIG. 4) is inserted into the electrode hole 14. After inserting in (FIG. 3), the illumination unit 2 is rotated horizontally clockwise. As a result, the large-diameter head portion of the electrode terminal 46 is fitted and locked in the electrode hole 14, and the electrode terminal 46 comes into contact with the power supply electrode T provided in the socket unit 1 and is electrically connected. .

  When the protrusion 52 of the illumination unit 2 is inserted into the central hole 13 from the fitting space 33 of the socket unit 1, the L groove 54 formed on the peripheral wall of the protrusion 52 of the illumination case 40 as shown in FIG. 3, the lighting unit 2 is rotated clockwise as described above, and the locking projection 26 is locked in the L groove 54. The illumination unit 2 is locked to the socket unit 1, and the connection between the illumination unit 2 and the socket unit 1 is ensured.

  When removing the illumination unit 2, the illumination unit 2 is lifted slightly upward and rotated counterclockwise, and the illumination unit 2 is pulled down when the large-diameter head of the electrode terminal 46 is positioned at the large-diameter portion of the electrode hole 14. Then, the socket unit 1 remains attached to the plate member C, and the illumination unit 2 is removed from the socket unit 1.

(Other embodiments)
In the said embodiment, although the case where the lighting fixture of this invention is attached to the board | plate material C of a kitchen is used as an example, the LED lighting fixture and LED lighting apparatus of this invention are a restaurant, a public facility, a hotel, general It can be used as ceiling lighting for indoors and storage rooms such as houses and apartments, lighting in cabinets, lighting in fixtures, and the like. In addition, the lighting device of the present invention is not limited to being attached downward, and can be attached upward, laterally, or obliquely.

  The embodiment described above is merely an example, and other shapes, structures, and unit structures can be used as long as the object of the present invention can be achieved.

  The lighting device of the present invention can also be used as interior lighting for vehicles such as automobiles, buses, airplanes, and ships.

DESCRIPTION OF SYMBOLS 1 Socket unit 2 Illumination unit 10 Socket case 11 Fixing tool 12 Back cover 13 Center hole 14 Electrode hole 15 Power cord 16 Relay connector 17 Power supply cord 18 Connector 19 Plug 20 Outer wall 21 Inner wall 22 Bottom plate 23 Accommodating space 24 Cord drawer port 25 Inside Groove 26 Locking projection 27 Outer groove 28 Center opening 29 Locking claw 30 Locking piece 31 Fixed piece 32 Claw 33 Fitting space 40 Illumination case 41 Power supply circuit board 42 Radiator 43 LED mounting board 44 Lens 45 Cover 46 Electrode terminal DESCRIPTION OF SYMBOLS 50 Top plate 51 Perimeter wall 52 Protrusion 53 Substrate accommodation space 54 L groove 55 Projection hole 56 Connecting shaft 57 Guide pin 58a Guide hole 58b Pin hole 59a Guide hole 59b Pin hole 60 Printed circuit board 61 Power supply component 62 Lead wire 63 Top plate 64 Perimeter wall 65 Outer recess 66 Inner recess 67 Radiation blade 68 LED module 69 Guide part 70 Connection electrode 71 Fresnel lens 72 Through hole (cover opening)
73 Flat plate 74 Inner peripheral wall 75 Boss 76 Outer peripheral wall 77 Lens insertion groove 78 Substrate locking edge 79 Lead wire insertion hole A LED lighting tool B Cupboard C Plate material H Mounting hole M Screw S Wiring space T Power supply electrode

  The present invention relates to an illuminating device and an illuminating device using an LED as a light source. The present invention relates to an illuminating device attached to the plate.

  As an illuminating device (downlight) attached downward to a plate material such as a top plate of a storage room or a lower plate (bottom plate) of a cupboard, an LED using a light source is known (Patent Document 1). In the lighting device described in Patent Document 1, an LED mounting substrate, a reflector plate, and a lens plate are combined into one product, which is attached to a ceiling or a shelf under a screw.

JP 2010-49830 A

  In the illumination device described in Patent Document 1, since the LED mounting substrate, the reflector plate, and the lens plate are combined into one product, these components are gathered together at the time of LED replacement or repair work. It is necessary to remove or replace the entire lighting device, which makes the replacement work and renovation work large and troublesome.

  The problem to be solved by the present invention is to provide an illuminating device and an illuminating device that can solve the above-mentioned problems, are easy to install, replace, repair, etc., are thin, have excellent heat dissipation, and can efficiently use LED light. There is to do.

LED lighting fixture of the present invention, in the LED lighting fixture using an LED as a light source, a socket unit attached to the plate member is inserted into the equipment holes opened in the plate member, detachably mountable lighting socket unit comprising a unit, the socket unit is provided with insertion space fittable at least illumination case of lighting units, and the electrode hole, and a power supply electrode, the power cord, the lighting unit, the insertion space of the socket unit fitting the entrant lighting case within, a power supply circuit board having electrode terminals, and the LED mounting substrate on which the LED is mounted, a heat radiating member for radiating heat from the LED, which is disposed below the heat sink ring A cover, the cover having a through hole at a central portion thereof, an exterior portion provided on an outer periphery of the through hole and set outside the plate member, the exterior portion being the plate It is a ring shape with a size that can be set outside the equipment hole, and the lighting case, power circuit board, LED mounting board, radiator, and cover are arranged and connected in the direction of the optical axis of the LED mounted on the LED board. The LED light is irradiated to the tip of the through-hole through the through-hole of the cover, the radiator is in contact with the exterior portion of the cover, and the heat from the LED is transferred from the radiator to the outside of the plate member. It is unitized so that heat is radiated to the outside of the plate through the exterior part to be set .

The LED lighting device of the present invention is the LED lighting device according to claim 1, wherein the socket unit includes a ring-shaped socket case having a central hole, and a ring-shaped fixing device having a fitting space and a fixing piece. The LEDs are arranged and connected in the direction of the optical axis of the LED to form a unit, and by the unitization, the central hole and the fitting space communicate with each other to form an insertion space .

The LED illuminator according to the present invention is the LED illuminator according to claim 1 or 2, wherein the heat dissipator includes a top plate, a peripheral wall, and a heat dissipating blade projecting outside the peripheral wall, and the heat dissipating blade is an exterior of the cover. It is unitized in contact with the part . In the LED lighting fixture according to claims 1 or one of claims 3, light from the LED may be provided at least a condensing lens capable in the through hole of the cover. 5. The LED lighting device according to claim 1, wherein the power cord includes a relay connector at a tip thereof, and the relay connector includes a plug at one end and a connector at the other end. It may be one that can be connected to and disconnected from the cord connector.

The LED illuminating device of the present invention is an LED illuminating device in which the LED illuminating device is attached to a plate material, and the LED illuminating device is the LED illuminating device according to any one of claims 1 to 4, The socket unit of the fixture is inserted in the equipment hole of the plate material and attached to the plate material, the power cord of the socket unit is wired in the wiring space of the plate material, and the lighting case is inserted in the insertion space of the socket unit Mounted on the socket unit, the electrode terminal of the lighting unit is fitted into the electrode hole of the socket unit and electrically connected to the power supply electrode in the socket unit, and the exterior part of the cover of the lighting unit is set on the outer surface of the plate material It has been done.

The LED illuminating device of the present invention is an LED illuminating device in which the LED illuminating device is attached to a plate material, the LED illuminating device is the LED illuminating device according to claim 5, and the socket unit of the LED illuminating device is in the equipment hole of the plate material The power cord of the socket unit is wired in the wiring space of the plate material, the relay connector at one end of the power cord can be connected to and disconnected from the connector of the power supply cord, and the lighting unit is a lighting case Is inserted into the insertion space of the socket unit and attached to the socket unit, and the electrode terminal of the lighting unit is fitted into the electrode hole of the socket unit and is electrically connected to the power supply electrode in the socket unit. The exterior portion of the cover is set on the outer surface of the plate material.

The LED lighting device of the present invention has the following effects.
(1) Since a separate lighting unit can be attached to and detached from the socket unit that can be mounted on the plate, and the LED module can be replaced or repaired by simply removing the lighting unit, maintenance is easy.
(2) Since the radiator of the lighting unit is disposed on the back surface side of the LED mounting substrate that generates a large amount of heat, the heat dissipation efficiency of the radiator is good.
(3) Since the radiator is made of a material in which a resin and a high thermal conductivity carbon fiber are mixed, the heat radiation efficiency is further improved. It is also lighter than aluminum ones.
(4) Since all of the power circuit board, the radiator, the LED mounting board, and the lens are arranged between the lighting case and the cover, it is thinner than the conventional lighting device, and the ceiling plate of the storage box, Even if it is attached to the bottom plate of a shelf, the protruding length is short, it is easy to use and does not interfere with the loading and unloading of the contents in the storage box.
(5) Since a power cord is provided, it is easy to take in commercial power.
(6) Since there is a lens, LED light is condensed and the tip of the lens becomes brighter than when there is no lens.
(7) Since the LED illumination driving IC that does not require an electrolytic capacitor is used in the power supply circuit, and a small capacitor is used instead of the electrolytic capacitor, the LED illuminator becomes thin and can be used as a downlight or the like. Suitable.

The LED lighting device of the present invention has the following effects.
(1) Since the socket unit is set and attached in the equipment hole of the plate material, the socket unit hardly protrudes from the plate material, and the appearance is good.
(2) Since the power cord is wired in the wiring space of the plate material, the power cord does not get in the way and the appearance is good.
(3) Since the attachment of the socket unit to the plate material is completed simply by attaching the socket unit to the plate material, the operation of attaching the LED lighting device to the plate material becomes easy.
(4) Since an LED illumination driving IC that does not require an electrolytic capacitor is used in the power supply circuit, and a small capacitor is used instead of the electrolytic capacitor, it protrudes into the storage chamber even when used as a downlight for the storage chamber. The length is shortened and it is difficult to get in and out of the contents in the storage room.

Explanatory drawing which shows an example of the LED lighting apparatus of this invention. The disassembled perspective view which shows an example of the LED lighting apparatus of this invention. The disassembled perspective view which shows an example of the socket unit of the LED lighting fixture of this invention. The disassembled perspective view which shows an example of the illumination unit of the LED lighting fixture of this invention. The unitization explanatory drawing of a lighting unit. The partial detail drawing of a lighting unit. Sectional drawing in the middle of attaching a lighting unit to the socket unit attached to the board | plate material. Sectional drawing of the state which attached the LED lighting fixture of this invention to the board | plate material.

(Embodiment)
Embodiments of the LED lighting device of the present invention will be described with reference to the drawings. The LED lighting device of the present invention can be used by being attached to various plate materials such as a top plate or a bottom plate or a side plate of a storage unit such as a storage box or a cupboard, but the LED lighting tool A shown in FIG. This is an example of attaching to C) (referred to as “plate material”) so that the lower part can be illuminated.

  As shown in FIG. 2, the LED illuminator A shown in FIG. 1 includes a socket unit 1 mounted on a plate material C, and an illumination unit 2 that can be attached to and detached from the socket unit 1. The socket unit 1 can be installed in the equipment hole H (FIG. 2) opened in the plate C, and the illumination unit 2 is detachable from the socket unit 1 installed in the equipment hole H.

(Socket unit)
As shown in FIG. 3, the socket unit 1 includes a socket case 10, a fixture 11 that fixes the socket case 10 to the plate material C, and a back cover 12 that covers the socket case 10, and the socket case 10 includes the lighting unit 2. 2, a key hole-shaped electrode hole 14, and a power cord 15. The socket case 10, the fixture 11, and the back cover 12 are arranged and connected in a row as shown in FIG. As a unit.

  The power cord 15 is drawn out of the socket case 10. A relay connector 16 is attached to the power cord 15 as shown in FIG. 2, and a connector 18 of a power supply cord 17 can be connected thereto. A plug 19 that can be connected to a commercial power source is connected to the power supply cord 17.

  The socket case 10 is made of resin and has a ring shape with an upper surface opening in which an outer wall 20, an inner wall 21, and a bottom plate 22 are integrally molded as shown in FIG. Inside the outer wall 20, the inner wall 21, and the bottom plate 22 is a housing space 23 (FIG. 7), and a cord outlet 24 (FIG. 3) is opened in the outer wall 20. Two electrode holes 14 (FIG. 3) are opened in the bottom plate 22, and a power electrode T is provided in each electrode hole 14, and a power cord 15 wired in the accommodation space 23 is provided on the power electrode T. One end is connected. Inner grooves 25 (FIG. 3) are formed vertically at four locations in the circumferential direction of the inner wall 21, and locking projections 26 are provided at two opposing positions on the inner wall 21. Outer grooves 27 are formed vertically at four locations in the circumferential direction of the outer wall 20.

  The back cover 12 has a ring shape made of resin, and locking claws 29 are formed at the four peripheral edges of the central opening 28. The number of the locking claws 29 can be set to a desired number.

  The fixture 11 is also in the form of a resin ring, with four locking pieces 30 protruding from the periphery thereof, and two fixing pieces 31 protruding outward. The number of the locking pieces 30 and the fixed pieces 31 can be set to a desired number. The locking piece 30 covers the outer periphery of the socket case 10 from below and is fitted into an outer groove 27 formed on the outer wall 20 of the socket case 10, and a claw 32 formed at the tip of the locking piece 30. The outer groove 27 is locked and fixed. The two fixing pieces 31 are for fixing to the plate material C with screws M as shown in FIG. A fitting space 33 into which the illumination unit 2 can be fitted is formed inside the ring-shaped fixture 11.

(Socket unit unitization)
Assembling the socket unit constituent members shown in FIG. 3 to finish (unitize) the socket unit 1 as shown in FIG. 2 can be performed as follows.
(1) Four locking claws 29 of the back cover 12 of FIG. 3 are fitted and locked in the inner groove 25 of the socket case 10, and the upper surface opening of the socket case 10 is closed with the back cover 12. At this time, the power cord 15 is pulled out from a cord outlet 24 formed in the socket case 10.
(2) The fixture 11 is disposed under the socket case 10, and the locking piece 30 of the fixture 11 is fitted and locked in the outer groove 27 of the socket case 10, so that the fixture 11 is attached to the socket case 10.

(Lighting unit)
As shown in FIG. 4, the lighting unit 2 includes a lighting case 40, a power circuit board 41, a radiator 42, an LED mounting board 43, a lens 44, and a cover 45, as shown in FIG. They are sequentially arranged in the vertical direction (LED irradiation direction) and are unitized as shown in FIGS. In this lighting unit 2, the lighting case 40 is fitted into the fitting space 33 of the socket unit 1 as shown in FIG. 2, and the electrode terminals 46 of the lighting unit 2 are inserted into the electrode holes 14 of the socket unit 1. Can be attached (locked) to the socket unit 1 by rotating it clockwise, and can be removed from the socket unit 1 by rotating the illumination unit 2 in reverse.

  In the lighting case 40 shown in FIG. 4, a peripheral wall 51 protrudes downward from the outer peripheral edge of the top plate 50, and a cylindrical protrusion 52 having a bottom opening that protrudes upward in FIG. 4 is formed at the center of the top plate 50. The bottom wall opening has a dish-like shape in which the inner sides of the peripheral wall 51 and the protrusion 52 are hollow. Inside the peripheral wall 51 is a substrate housing space 53 (FIG. 5) having a size and a width that can accommodate the LED mounting substrate 43. The protrusion 52 has an outer diameter and a height that can be inserted into the central hole 13 from the fitting space 33 of the socket unit 1, and L grooves 54 are formed at two positions facing the outer peripheral surface of the peripheral wall of the protrusion 52. ing. When the lighting unit 2 is fitted to the socket unit 1 as shown in FIG. 2, the L groove 54 is fitted to the two locking projections 26 (FIG. 3) of the socket case 10 shown in FIG. When 2 is rotated, the L groove 54 is locked to the locking protrusion 26 and the lighting unit 2 is locked to the socket unit 1.

  A projecting hole 55 is formed in the top plate 50 of FIG. The protruding hole 55 is sized so that the electrode terminal 46 protruding from the power circuit board 41 can protrude. A connecting shaft 56 and a guide pin 57 project from the inner surface of the top plate 50 downward. The connection shaft 56 and the guide pin 57 are provided close to each other, and are provided at four positions on the inner surface of the top plate 50 (shown in FIG. 4 are two connections on the front side of the top plate 50). Only the shaft 56 and the two guide pins 57).

  The power supply circuit board 41 shown in FIG. 4 has power supply circuits necessary for lighting LEDs on the front and back surfaces of a circular printed circuit board 60. On the front and back surfaces of the printed circuit board 60, power supply components 61 necessary for lighting the LEDs, for example, a choke coil, a resistor, an LED illumination driving IC, a capacitor, and the like are mounted. Electrode terminals 46 protrude from the front surface of the printed circuit board 60 and are electrically connected and fixed to the power supply circuit on the back surface of the printed circuit board 60 by soldering or other fixing means. An IC that does not require an electrolytic capacitor is used as the LED illumination driving IC, and a small (chip-shaped) ceramic capacitor is used instead of the electrolytic capacitor. The capacitor may be another chip capacitor. As the LED illumination driving IC, for example, LC5205S manufactured by Sanken Electric Co., Ltd. can be used. The thick choke coil is disposed on the upper surface of the printed circuit board 60 (the same surface as the protruding surface of the electrode terminal 46) and inside the two electrode terminals 46, and the entire power supply circuit (the printed circuit board 60, the electronic components on the front and back surfaces). 61) is reduced to about 13 mm. When the illumination unit 2 is inserted into the socket unit 1 incorporated in the plate member C having a thickness of about 20 mm as shown in FIG. 8 and attached as shown in FIG. 8, the entire power supply circuit is accommodated in the plate member C (the plate member C It does not protrude at all (in the shelf) or hardly). The two electrode terminals 46 have large-diameter heads that can be inserted into the electrode holes 14 of the socket case 10 shown in FIG. Lead wires 62 are connected to the power supply circuit, and the lead wires 62 are led out to the back surface of the printed circuit board 60. Although the arrangement of the power supply component 61 on the front and back surfaces of the printed circuit board 60 can be arbitrarily selected, the tall electronic component is arranged on the same surface as the electrode terminal 46, and the power supply component having a high heat dissipation property is easily radiated. It is desirable to arrange them together.

  4 has a circular shallow dish shape, the top plate 63 is formed one step lower than the upper edge of the peripheral wall 64, and the outer recess 65 surrounded by the peripheral wall 64 is formed on the top plate 63. In addition, an inner recess 66 (FIG. 5) surrounded by the peripheral wall 64 is formed under the top plate 63. The inner recess 66 is wide and deep enough to accommodate the LED mounting substrate 43 (FIG. 4). An arc-shaped heat dissipating blade 67 (FIG. 4) projects from the lower portion of the peripheral wall 64. A lead wire insertion hole 79 is opened in the top plate 63. The lead wire insertion hole 79 is sized so that the lead wire 62 (FIG. 4) drawn to the back surface of the printed board 60 can be inserted.

  The radiator 42 is formed of a mixed resin of resin and high thermal conductivity carbon fiber. As the mixed resin, a heat-dissipating resin having an increased thermal conductivity, for example, a resin in which an appropriate amount of thermally conductive filler (highly thermally conductive carbon fiber) is dispersed and mixed in a molding resin is suitable. Preferable examples of the thermally conductive filler include inorganic fillers such as alumina, boron nitride, aluminum nitride, and silica, metal fillers such as silver, gold, and copper, and carbon fillers having high thermal conductivity. Among these, graphitized carbon fibers having a highly crystalline graphite structure that can efficiently increase the thermal conductivity of the resin and obtain high performance in mechanical strength and moldability are preferred, and in particular, mesophase pitch is used as a raw material. A graphitized carbon short fiber having an average fiber diameter of 2 to 20 μm, an average fiber length of 30 to 1000 μm, and a crystallite size derived from the growth direction of the hexagonal network surface of the graphite crystal is preferably 20 nm or more. The average fiber diameter is more preferably 5 to 15 μm, the average fiber length is more preferably 70 to 300 μm, and the crystallite size is more preferably 40 nm or more.

  Examples of the products related to the graphitized carbon short fibers include Lahima (registered trademark) manufactured by Teijin Limited. These graphitized carbon fibers are preferably dispersed and mixed in various molding resins at a ratio of about 10 to 50 wt%.

  A combination of a plurality of thermally conductive fillers can be used, and it is also preferable to use a combination of graphitized carbon fiber and an inorganic filler and / or a metal filler. When these heat conductive fillers are mixed with the resin at a ratio of about 30 to 60 wt% in total, it is possible to obtain a high value of 20 W / m · K or more as the heat conductivity of the heat radiation resin. As the resin material for the matrix, various thermoplastic resins and thermosetting resins are preferably used, and heat dissipation with excellent heat dissipation is achieved by molding methods such as injection molding, press molding, blow molding, vacuum molding, and casting. The tool 42 can be molded.

  Examples of the thermoplastic resin include polyethylene, polypropylene, polycarbonate, polybutylene terephthalate, polyphenylene sulfide, aliphatic polyamide (nylon), polyether ether ketone, liquid crystal polymer (LCP), etc., and alloys and modified products thereof. Is available. As the modified product, a thermoplastic elastomer or the like obtained by copolymerizing an elastomer component is also preferably used.

  Examples of the thermosetting resin include epoxy, silicone, urethane, unsaturated polyester, and melamine.

  Four elongated LED modules 68 are mounted on the LED mounting substrate 43 of FIG. Guide grooves 69 are formed at four locations on the outer peripheral edge of the LED mounting substrate 43. Each LED module 68 has a large number of LED chips (not shown) arranged in a line. Two connection electrodes 70 are provided on the LED mounting substrate 43. When the connection electrode 70 is formed into an illumination unit, the connection electrode 70 is electrically connected to the lead wire 62 drawn from the power supply circuit of the power supply circuit board 41 so that power is supplied to the LED module 68.

  The lens 44 in FIG. 4 is obtained by processing four locations on a resin substrate (disk) to form a plurality of Fresnel lenses 71 (four in FIG. 4). Four Fresnel lenses 71 are formed along the array of LED modules 68. The Fresnel lens 71 condenses, diffuses, reflects, etc. the light from the LED module 68. By collecting the light, the illuminance (brightness) can be increased as compared with the case where the light is not collected, and by diffusing, the straight light from the individual LEDs constituting the LED module 68 is diffused, and the light from the LED module 68 is lined. Can be made. The lens may be other than a Fresnel lens. The lens itself may not diffuse light. In that case, a diffusing agent can be mixed into the resin that is the lens substrate material to impart diffusibility to the substrate.

When the cover 45 of FIG. 4 is unitized, it covers the lens 44, the LED mounting board 43, and the radiator 42 from below as shown in FIG. The cover 45 has a circular ring shape in which an exterior portion 73 is formed on the outer periphery of a through hole (cover opening) 72 formed in the center portion. An upward inner peripheral wall 74 is erected in a ring shape at the peripheral edge of the cover opening 72, and a connecting boss 75 projects from the inner peripheral wall 74, and extends outward toward the outer peripheral edge of the exterior portion 73. An outer peripheral wall 76 is provided.

  A lens fitting groove 77 (FIG. 6) for fitting and locking the lens 44 and a board locking edge 78 (FIG. 6) for locking the LED mounting board 43 are formed on the inner surface of the inner peripheral wall 74 of FIG. Has been.

(Unitization of lighting unit)
Assembling the lighting case 40, the power supply circuit board 41, the radiator 42, the LED mounting board 43, the lens 44, and the cover 45 shown in FIG. 4 into a lighting unit 2 as shown in FIG. Can be.
(1) The power circuit board 41 is set in the board housing space 53 (FIG. 5) of the lighting case 40, and the electrode terminal 46 is protruded upward from the protrusion hole 55. At this time, as indicated by phantom lines in FIG. 4, the guide pin 57 of the illumination case 40 passes through the guide hole 58a of the power circuit board 41, and the connecting shaft 56 protrudes below the power circuit board 41 through the pin hole 58b. To do.
(2) The radiator 42 is disposed under the lighting case 40 so as to face the power circuit board 41 accommodated in the lighting case 40 as shown in FIG. At this time, as indicated by phantom lines in FIG. 4, the guide pin 57 passes through the guide hole 59 a of the radiator 42 and the connecting shaft 56 protrudes below the radiator 42 through the pin hole 59 b.
(3) The lens 44 is fitted and locked in the lens insertion groove 77 of the cover 45 as shown in FIG. 6, and the LED mounting board 43 is locked to the board locking edge 78 of the cover 45.
(4) The cover 45 in the state (3) is arranged below the radiator 42 connected to the lighting case 40 and the power supply circuit board 41 as shown in FIG. 6 and protrudes below the radiator 42. The connecting shaft 56 is inserted into the hole of the boss 75 of the cover 45 and fixed with an adhesive. At this time, the guide pins 57 projecting downward from the radiator 42 are aligned so as to match the position of the guide portion 69 of the LED mounting board 43, the rotation of the LED mounting board 43 is restricted, and the LED mounting board 43 is Position it.
(5) In the state of (4), the heat dissipating blade 67 of the heat dissipator 42 that contacts the inner surface of the exterior part 73 of the cover 45 is bonded and fixed to the inner surface of the exterior part 73 with a heat conductive adhesive as shown in FIG. To do. As the heat conductive adhesive, for example, a PPS (polyphenylene sulfide) -based backing agent is suitable.
(6) When the cover 45 is covered as shown in FIG. 6, the inner peripheral wall 74 of the cover 45 fits in the inner recess 66 (FIGS. 5 and 6) of the radiator 43.

(LED lighting device)
The LED lighting device of the present invention has the following configuration. As shown in FIG. 2, the socket unit 1 is set in the mounting hole H provided in the plate material C and fixed with screws M. The power cord 15 is wired in the wiring space S provided on the back side of the plate material C as shown in FIG. 7, and one end is drawn out of the plate material C as shown in FIG. is there.

  As shown in FIG. 2, the projection 52 (FIG. 2) of the lighting unit 2 is inserted into the center hole 13 from the fitting space 33 of the socket unit 1 attached to the plate member C, and the electrode terminal 46 (FIG. 4) is inserted into the electrode hole 14. After inserting in (FIG. 3), the illumination unit 2 is rotated horizontally clockwise. As a result, the large-diameter head portion of the electrode terminal 46 is fitted and locked in the electrode hole 14, and the electrode terminal 46 comes into contact with the power supply electrode T provided in the socket unit 1 and is electrically connected. .

  When the protrusion 52 of the illumination unit 2 is inserted into the central hole 13 from the fitting space 33 of the socket unit 1, the L groove 54 formed on the peripheral wall of the protrusion 52 of the illumination case 40 as shown in FIG. 3, the lighting unit 2 is rotated clockwise as described above, and the locking projection 26 is locked in the L groove 54. The illumination unit 2 is locked to the socket unit 1, and the connection between the illumination unit 2 and the socket unit 1 is ensured.

  When removing the illumination unit 2, the illumination unit 2 is lifted slightly upward and rotated counterclockwise, and the illumination unit 2 is pulled down when the large-diameter head of the electrode terminal 46 is positioned at the large-diameter portion of the electrode hole 14. Then, the socket unit 1 remains attached to the plate member C, and the illumination unit 2 is removed from the socket unit 1.

(Other embodiments)
In the said embodiment, although the case where the lighting fixture of this invention is attached to the board | plate material C of a kitchen is used as an example, the LED lighting fixture and LED lighting apparatus of this invention are a restaurant, a public facility, a hotel, general It can be used as ceiling lighting for indoors and storage rooms such as houses and apartments, lighting in cabinets, lighting in fixtures, and the like. In addition, the lighting device of the present invention is not limited to being attached downward, and can be attached upward, laterally, or obliquely.

  The embodiment described above is merely an example, and other shapes, structures, and unit structures can be used as long as the object of the present invention can be achieved.

  The lighting device of the present invention can also be used as interior lighting for vehicles such as automobiles, buses, airplanes, and ships.

DESCRIPTION OF SYMBOLS 1 Socket unit 2 Illumination unit 10 Socket case 11 Fixing tool 12 Back cover 13 Center hole 14 Electrode hole 15 Power cord 16 Relay connector 17 Power supply cord 18 Connector 19 Plug 20 Outer wall 21 Inner wall 22 Bottom plate 23 Accommodating space 24 Cord drawer port 25 Inside Groove 26 Locking projection 27 Outer groove 28 Center opening 29 Locking claw 30 Locking piece 31 Fixed piece 32 Claw 33 Fitting space 40 Illumination case 41 Power supply circuit board 42 Radiator 43 LED mounting board 44 Lens 45 Cover 46 Electrode terminal DESCRIPTION OF SYMBOLS 50 Top plate 51 Perimeter wall 52 Protrusion 53 Substrate accommodation space 54 L groove 55 Projection hole 56 Connecting shaft 57 Guide pin 58a Guide hole 58b Pin hole 59a Guide hole 59b Pin hole 60 Printed circuit board 61 Power supply component 62 Lead wire 63 Top plate 64 Perimeter wall 65 Outer recess 66 Inner recess 67 Radiation blade 68 LED module 69 Guide part 70 Connection electrode 71 Fresnel lens 72 Through hole (cover opening)
73 Exterior part 74 Inner peripheral wall 75 Boss 76 Outer peripheral wall 77 Lens insertion groove 78 Substrate locking edge 79 Lead wire insertion hole
80 insertion space A LED lighting tool B cupboard C plate material H mounting hole M screw S wiring space T power supply electrode

Claims (5)

In an LED lighting device using an LED as a light source,
A socket unit that can be attached to a plate and a lighting unit that can be detachably attached to the socket unit.
The socket unit is inserted into an equipment hole opened in the plate material and fixed to the plate material, a fitting space in which the lighting unit can be fitted, and an electrode in which an electrode terminal of the lighting unit can be fitted. A power supply electrode to which an electrode terminal fitted into the hole and the electrode hole is electrically connected; and a power supply cord connected to the power supply electrode; one end of the power supply cord is drawn out of the socket case;
The lighting unit includes a lighting case having a fitting portion that can be fitted in a fitting space of a socket unit, a power circuit board, an LED mounting board, and a radiator that dissipates heat generated from the LED. The circuit board is provided with an electrode terminal that can be inserted into the electrode hole of the socket case and locked to the electrode hole, and the fitting portion of the lighting unit is fitted into the fitting space of the socket unit, and the electrode hole of the socket unit is fitted. By inserting and rotating the electrode terminal of the lighting unit, it can be attached to the socket unit.
An LED lighting device characterized by that. The LED lighting device according to claim 1,
The socket unit is unitized with a socket case that can be inserted into an equipment hole opened in the plate material and fixed to the plate material, and a fixture that fixes the socket case to the plate material.
The lighting unit dissipates heat generated from the lighting case having a fitting portion that can be fitted in the fitting space of the socket unit, a power circuit board mounted inside the lighting case, the LED mounting board, and the LED. A radiator, a lens that can collect at least light from the LED, and a cover that covers the outside of the lens;
The lighting case, the power supply circuit board, the radiator, the LED mounting board, the lens and the cover are arranged in a line in the optical axis direction of the LED and unitized.
An LED lighting device characterized by that. The LED lighting device according to claim 1 or 2,
The radiator is made of a material that is a mixture of resin and high thermal conductivity carbon fiber.
An LED lighting device characterized by that. In the LED lighting fixture of any one of Claim 1 thru | or 3,
Using an LED lighting driving IC that does not require an electrolytic capacitor in the power circuit, and using a small capacitor instead of an electrolytic capacitor,
An LED lighting device characterized by that. The LED illuminator according to any one of claims 1 to 4 is attached to a plate member, and the socket unit of the LED illuminator is attached by being inserted into the equipment hole of the plate member, and the power cord of the socket unit is Wired in the wiring space of the plate material, one end of the power cord is drawn out of the wiring space, the lighting unit can be attached to and detached from the socket unit, and the lighting unit is attached to the socket unit. The power supply electrode of the unit is electrically connected,
LED lighting device characterized by the above.

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