JP2016048687A - Lamp, lamp device and lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an LED lamp capable of radiating heat effectively with a simple structure.SOLUTION: An LED lamp 14 includes a lightning circuit 39, a housing part 31, a heat radiation body 32, an LED substrate 34 and a cover 35. The housing part 31 includes a pair of electrode pins 49, 49 electrically connected to the lightning circuit 39, and houses the lightning circuit 39 inside. The heat radiation body 32 integrally includes a lid part 57 for covering the housing part 31, an arrangement part 58 located around the lid part 57 and a plurality of connection parts 59 for connecting the lid part 57 and the arrangement part 58. The LED substrate 34 includes an LED 86 for emitting light by power supply from the lightning circuit 39, and arranged by being thermally connected to the arrangement part 58 of the heat radiation body 32. The cover 35 has light transmissivity and covers the LED substrate 34.SELECTED DRAWING: Figure 1

Description

  Embodiments described herein relate generally to a lamp in which a lighting circuit is housed in a housing portion, a lamp device having the lamp, and a lighting fixture including the lamp device.

  Conventionally, there is a lamp using a so-called GX53 type base provided with a pair of electrode pins. This lamp has a flat cylindrical shape as a whole, and an LED substrate, which is a light source substrate on which an LED as a light source is mounted, is attached to the surface of a flat metal main body portion. In addition, a base case portion containing a power supply lighting circuit electrically connected to the electrode pins is disposed on the back surface of the main body portion, and the LED substrate is covered with a reflector attached to the main body portion. ing.

JP 2011-70974 A

  However, in the conventional configuration, since heat generated in the lighting circuit and heat generated in the LED substrate are generated on the front and back of the main body, there is a problem that heat tends to accumulate locally and effective heat dissipation cannot be performed. . In this regard, although it is conceivable to provide a heat radiator for each, in such a configuration, the configuration becomes complicated.

The problem to be solved by the present invention is to provide a lamp in which a lighting circuit and a light source substrate can be arranged separately in the vertical and radial directions of the casing , a lamp device having the lamp, and a lighting fixture provided with the lamp. is there.

  The lamp of the embodiment includes a lighting circuit, a housing portion, a housing, a light source substrate, and a cover. The accommodating part includes a base part and a pair of electrode pins. The base unit houses the lighting circuit inside

The lower side opens. The pair of electrode pins is provided on the upper side of the base portion and is electrically connected to the lighting circuit. The housing integrally includes a lid portion that covers the lower side of the base portion of the housing portion, an annular arrangement portion that is positioned around the lid portion, and a plurality of connection portions that connect the lid portion and the arrangement portion. . The light source substrate includes a light source that emits light by power feeding from the lighting circuit, and is disposed below the arrangement portion of the housing. The cover has translucency and covers the light source substrate.

According to the present invention, the housing houses the lighting circuit inside and the lid that covers the lower side of the base portion of the housing that is open on the lower side, and the light source substrate that is positioned around the lid and on the lower side. The lighting circuit and the light source substrate can be separated and arranged in the vertical and radial directions of the housing by integrally including the placement portion to be placed and a plurality of connection portions that connect the lid portion and the placement portion .

It is a disassembled perspective view which shows the lamp | ramp of 1st Embodiment from the downward direction. It is sectional drawing which shows a lamp | ramp same as the above. It is sectional drawing which expands and shows a part of lamp same as the above. It is a top view which shows the state which removed the cover of the lamp same as the above from the downward direction. It is a top view which shows the accommodating part of a lamp | ramp same as the above from the downward direction. It is a top view which shows a lamp same as the above from the bottom. It is a top view which shows a lamp same as the above from the top. It is a side view which shows typically the lighting fixture provided with the lamp device which has a lamp same as the above. It is a disassembled perspective view which shows the lamp | ramp of 2nd Embodiment from the downward direction. It is sectional drawing which expands and shows a part of lamp same as the above. It is sectional drawing which expands and shows a part of other lamp | ramp same as the above. It is a top view which shows a lamp same as the above from the bottom. It is a top view which shows a lamp same as the above from the top. It is sectional drawing which shows the lamp | ramp of 3rd Embodiment. It is sectional drawing which expands and shows a part of lamp | ramp of 4th Embodiment. It is sectional drawing which expands and shows a part of other lamp | ramp same as the above. It is sectional drawing which expands and shows a part of lamp | ramp of 5th Embodiment. It is a top view which shows the state which removed the cover of the lamp same as the above from the downward direction. It is a top view which shows the accommodating part of a lamp | ramp same as the above from the downward direction. It is a top view which shows a lamp same as the above from the bottom. It is a top view which shows a lamp same as the above from the top. It is a side view which shows typically the lighting fixture of 6th Embodiment.

  The configuration of the first embodiment will be described below with reference to FIGS.

  As shown in FIG. 8, the lighting fixture 11 includes a fixture main body 12 installed on a ceiling surface, a socket 13 attached to a central portion of the fixture main body 12 and the like, and an LED lamp 14 which is a lamp detachable from the socket 13. And a glove 16 that covers the lamp device 15. In the following description, directions such as the vertical direction will be described with reference to the state in which the lamp device 15 is mounted horizontally, with the fixture body 12 and socket 13 side as the upper side and the lamp device 15 side as the lower side.

  The socket 13 corresponds to a so-called GX53 type base, and has a flat cylindrical socket body 21 made of synthetic resin having electrical insulation, and an insertion hole (not shown) is formed at the center of the socket body 21. ing. Further, a socket opening (not shown) is formed on the lower surface of the socket main body 21 at a position symmetrical to the central portion. Each socket opening is in the shape of a long hole that is curved in an arc shape, and a metal receiving part for supplying power by being electrically connected to an external power source (commercial power source) is disposed inside. Further, an enlarged diameter portion is formed at one end of each socket opening.

  As shown in FIGS. 1 to 8, the LED lamp 14 includes, from the upper side to the lower side, a housing part 31 that is a base case, a radiator 32 that is a metal housing, an insulating sheet 33 that is an insulating member, a light source An LED substrate 34, which is a light-emitting element substrate, and a cover 35, which is a lamp globe, are integrally assembled into a thin cylindrical shape.

  The accommodating part 31 has, for example, a GX53 type base part structure and is made of a synthetic resin having electrical insulation. The accommodating portion 31 includes an accommodating portion main body 37, and the power supply board 40 on which the lighting circuit 39 is mounted is accommodated therein.

  The housing portion main body 37 is located in a flat base portion 42, a base protrusion portion 43 protruding from the central portion of the base portion 42, and a position spaced outward from the base portion 42, that is, around the base portion 42. An annular peripheral portion 44 and a plurality of, for example, three connecting arm portions 45 that are formed radially along the radial direction and connect the base portion 42 and the peripheral portion 44 are integrally provided. The accommodating portion main body 37 is provided with a ventilation opening 46 as a through hole between the outer peripheral side of the base portion 42, the inner peripheral side of the peripheral portion 44, and the connecting arm portions 45 and 45, respectively.

  The base portion 42 has a flat, covered cylindrical shape, and a plurality of holding portions 48 for holding the power supply substrate 40 (lighting circuit 39) inside are projected downward. In the base portion 42, electrode pins 49, 49 are inserted from the inner side (lower side) and exposed to the outer side (upper side) at positions symmetrical to the central portion. Each electrode pin 49 is formed in a columnar shape, and has an enlarged portion 49a fitted to the enlarged diameter portion of each socket opening of the socket 13 on the distal end side. Therefore, these electrode pins 49 are rotated (turned) in the circumferential direction with the enlarged portion 49a inserted and fitted into the enlarged diameter portion of the socket opening of the socket 13, so that the enlarged portion 49a is The LED lamp 14 is locked to the other end side and electrically connected to the receiver, and the LED lamp 14 is connected and fixed to the socket 13 (the instrument body 12). Further, a boss-like screw receiving portion 50 is formed on the outer peripheral edge portion of the base portion 42 at a position corresponding to the base end of the connecting arm portion 45.

  The base protrusion 43 has a flat, covered cylindrical shape and is set to have a diameter smaller than that of the base 42. The base protrusion 43 is inserted into the insertion hole of the socket body 21 with the LED lamp 14 mounted on the socket 13.

  Further, each connecting arm portion 45 is formed so as to gradually become narrower from the proximal end side (inner side) to the distal end side (outer side). Further, the connecting arm portions 45 protrude outward from the outer peripheral edge of the peripheral edge portion 44 at the distal end side.

  The lighting circuit 39 is a circuit for converting power supplied from an external power source (commercial power source) (not shown) via the electrode pins 49 and 49 and feeding the LED board 34 with power.

  The power supply board 40 includes a power supply board main body 51 and an electronic component 52 that is mounted on the power supply board main body 51 and constitutes the lighting circuit 39, and is held and fixed to the holding portion 48 of the base portion 42 of the housing portion main body 37. ing. A part of the electronic component 52 is fitted and positioned inside the base protrusion 43 in a state where the power supply substrate body 51 is held by the holding portion 48. Further, the power supply board 40 is provided with a wiring 53 electrically connected to each electrode pin 49 and a plurality of wirings 54 electrically connected to the LED board 34. These wirings 54 are arranged along any one of the connecting arm portions 45 of the accommodating portion 31, and the connecting arm portion 45 projects in a rectangular tube shape projecting outward from the outer edge portion of the peripheral edge portion 44. It is inserted into the wiring insertion part 55 and led to the LED board 34 side. Further, the leading ends of these wirings 54 are connected to one connector 56.

  Further, the radiator 32 is formed in a thin plate shape with a metal such as aluminum having excellent heat dissipation and thermal conductivity. The heat dissipating body 32 includes a circular lid portion 57 that covers the accommodating portion 31, an annular arrangement portion 58 that is located on the outer periphery of the lid portion 57, and a lid portion that is formed radially along the radial direction. A plurality of, for example, three connecting portions 59 for connecting 57 and the placement portion 58 are integrally provided. For this reason, the heat radiating body 32 is provided with openings 60 between the outer peripheral side of the lid portion 57, the inner peripheral side of the arrangement portion 58, and between the connecting portions 59, 59, respectively. The heat radiating body 32 is fixed to the housing portion 31 by a plurality of screws 61 that are heat radiating body fixing members.

  The lid portion 57 is formed in a circular shape that covers the entire housing portion main body 37 of the housing portion 31. Further, in the vicinity of the outer peripheral edge portion of the lid portion 57, screw holes 65 into which the screws 61 are inserted are provided at positions corresponding to the base ends of the connection portions 59, respectively. These screw holes 65 communicate with the screw receiving portions 50 of the accommodating portion 31 in a state in which the radiator 32 is attached to the accommodating portion 31, and the screws 61 inserted into these screw holes 65 are screwed to the screw receiving portions 50. It has become so. Further, the outer peripheral edge portion of the lid portion 57 is bent upward and protrudes, and the heat radiating body 32 is prevented from rotating and positioned with respect to the housing portion 31 at the central portion of each opening 60 of the outer peripheral edge portion. A hook receiving portion 66 as a radiator-side engagement portion for projecting is provided on the upper side, that is, toward the accommodating portion 31 side. These hook receiving portions 66 are formed in a loop shape, and in the state where the heat radiating body 32 is attached to the housing portion 31, a hook-like housing portion side engagement projecting from the outer periphery of the base portion 42 of the housing portion main body 37 is provided. Each is engaged with a hooking portion 67 as a joint portion.

  The placement portion 58 is formed by integrating a placement surface portion 71 that is formed in an annular flat plate shape and serves as a placement surface of the LED substrate 34 and a bent portion 72 that is bent and protrudes downward from the outer peripheral edge of the placement surface portion 71. In preparation. A square hole-shaped opening 73 is provided in the vicinity of the inner peripheral edge of the arrangement surface portion 71, that is, in the vicinity of the outer peripheral edge of the lid portion 57. A plurality of screw holes 76 for fixing the LED substrate 34 to the heat radiating body 32 with a plurality of screws 75 as fixing members are provided in the vicinity of the outer peripheral edge of the arrangement surface portion 71. The bent portion 72 is provided with a plurality of square hole-like locking openings 78 for locking the cover 35 to the heat radiating body 32.

  The opening 73 is positioned adjacent to the outer peripheral edge of the lid portion 57, and the wiring insertion portion 55 is inserted in a state where the radiator 32 is attached to the housing portion 31. The distal end side of the wiring insertion part 55 inserted into the opening 73 protrudes downward from the lower surface of the disposing part 58 (arrangement surface part 71) of the radiator 32 on the cover 35 side. Interference with the edge of the

  Each connecting portion 59 is a portion that covers the base end side of each connecting arm portion 45 of the accommodating portion 31, and is formed so as to gradually become narrower from the base end side (inner side) to the distal end side (outer side). Has been.

  The insulating sheet 33 is for insulating the radiator 32 and the LED substrate 34, is formed in an annular shape, covers the lower surface of the arrangement surface portion 71 of the arrangement portion 58 of the radiator 32, and is attached together with the LED substrate 34. It is fixed. The insulating sheet 33 is set to have a width dimension substantially equal to that of the arrangement surface portion 71 and covers substantially the entire lower surface of the arrangement surface portion 71. Further, the insulating sheet 33 is provided with a rectangular hole-shaped communication opening 81 that communicates with the opening 73 of the heat radiating body 32 and through which each wiring 54 is inserted, at a position on the inner peripheral edge side. The insulating sheet 33 is provided with a communication hole 82 communicating with each screw hole 76 of the heat radiating body 32 at a position near the outer peripheral edge.

  The LED board 34 is also called an LED module, and integrally includes an annular flat plate board body 85 and a plurality of LEDs 86 that are light sources as solid light emitting elements mounted on the board body 85. ing.

  The substrate body 85 is set to have a narrower width dimension than the placement surface portion 71 of the placement portion 58. For this reason, the LED substrate 34 is attached to the arrangement surface portion 71 of the arrangement portion 58, and the inner peripheral edge and the outer peripheral edge are respectively relative to the inner edge and the outer periphery of the arrangement surface portion 71 (insulating sheet 33) of the arrangement portion 58. A predetermined width is offset. Further, the substrate body 85 is formed with a notch opening portion 88 formed in the inner peripheral edge thereof, which is in communication with the opening 73 of the heat radiating body 32 and the communication opening 81 of the insulating sheet 33 and through which each wiring 54 is inserted. In addition, on the lower surface of the substrate body 85, each wiring 54 led out from the notch opening 88 (the opening 73 and the communication opening 81) is electrically connected via the connector 56 in the vicinity of the notch opening 88. A connector receiving portion 89 is mounted. The board body 85 is provided with through holes 90 into which the screw holes 76 of the radiator 32 and the communication holes 82 of the insulating sheet 33 and the communication screws 75 are inserted.

  Each LED 86 is a surface-mounted element in which, for example, an LED chip that emits blue light is covered with a yellow light-emitting resin sealing layer, and the outer periphery of the lower surface of the substrate body 85, that is, the surface facing the cover 35 At a position on the side, they are arranged at substantially equal intervals along a predetermined row (virtual circle C). The virtual circle C is a concentric circle with the substrate body 85, and the through hole 90 is located on the virtual circle C. Therefore, the LED substrate 34 is fixed to the heat radiating body 32 at each position on the virtual circle C by the screws 75 and is thermally connected to the heat radiating body 32.

  The cover 35 is made of a synthetic resin having translucency, and is formed in an annular shape corresponding to the arrangement portion 58 (arrangement surface portion 71) of the heat radiating body 32. Further, the cover 35 is provided on an annular belt-like cover portion 93 facing the lower side (light emitting side) of the LED substrate 34 (LED 86), and the cover 35 is provided on the outer peripheral edge of the cover portion 93. A locking claw portion 94 as a locking portion for stopping is integrally provided.

  The cover portion 93 is formed in a planar shape, and is positioned so as to be spaced downward with respect to the LED substrate 34.

  The locking claw portion 94 is a portion that is inserted into the locking opening 78 of the heat radiating body 32 to be locked, and is formed in a claw shape on the outer peripheral edge of the cover portion 93.

  The globe 16 is formed of a light-transmitting synthetic resin or the like, for example, into a bottomed cylindrical shape having an upper opening, covers the LED lamp 14 (lamp device 15), and emits light from the LED lamp 14 (LED 86). Is configured to diffuse.

  Next, the operation of the first embodiment will be described.

  When assembling the LED lamp 14, first, the power supply board 40 (lighting circuit 39) in which the electronic component 52 is mounted on the power supply board main body 51 with respect to the housing part main body 37 of the housing part 31 to which each electrode pin 49 is attached. The electrode pins 49 and the power supply substrate 40 are electrically connected by the wirings 53 by being inserted and held by the holding part 48. In addition, each wiring 54 led out from the power supply substrate 40 is drawn out along any one of the connecting arm portions 45, inserted into the wiring insertion portion 55, and led out below the housing portion 31.

  Next, the heat radiating body 32 is attached to the housing portion 31. At this time, the heat radiator 32 aligns each connecting portion 59 with each connecting arm portion 45 of the accommodating portion 31, aligns each screw hole 65 with each screw receiving portion 50, and each hook receiving portion 66. Each hook 67 is engaged with each hook receiving portion 66 by being pushed into the accommodating portion 31 side while being aligned with each hook 67, and the radiator 32 is temporarily locked with respect to the accommodating portion 31. . At this time, each wiring 54 and connector 56 derived from the wiring insertion portion 55 are inserted into the opening 73 of the arrangement surface portion 71 of the arrangement portion 58 and led out below the arrangement surface portion 71. Thereafter, the heat radiator 32 is attached and fixed to the housing portion 31 by inserting the screw 61 into each screw hole 65 and screwing it to each screw receiving portion 50. In this state, the radiator 32 covers the base portion 42 of the accommodating portion main body 37 of the accommodating portion 31 with the lid portion 57, and each connecting arm portion 45 of the accommodating portion 31 is positioned on the upper surface that is the back surface of each connecting portion 59. And the arrangement | positioning part 58 is located in the outer periphery of the cover part 57 (accommodating part 31).

  Further, the LED substrate 34 on which the LED 86 and the connector receiving portion 89 are mounted in advance on the substrate body 85 is attached to the heat radiating body 32 via the insulating sheet 33. At this time, the insulating sheet 33 aligns the communication opening 81 with the opening 73 of the radiator 32 and aligns the communication holes 82 with the screw holes 76 of the radiator 32. In addition, the LED board 34 aligns the notch opening 88 of the substrate body 85 with the communication opening 81 of the insulating sheet 33 and the opening 73 of the heat radiating body 32, and each through hole 90 is connected to each communication hole 82 of the insulating sheet 33 and Alignment with each screw hole 76 of the radiator 32 is performed. In this state, the screws 75 are inserted into the respective through holes 90 and the respective through holes 82 and screwed into the respective screw holes 76, so that the LED substrate 34 is disposed in the arrangement portion 58 of the radiator 32 via the insulating sheet 33. Attached and fixed to the surface portion 71. Further, each wiring 54 and connector 56 led out from the opening 73 of the heat radiating body 32 are led out from the communication opening 81 of the insulating sheet 33 and the notch opening 88 of the LED substrate 34 to connect the connector 56 to the connector receiving portion 89. Thus, the lighting circuit 39 is electrically connected to each LED 86.

  Then, the cover 35 is attached to the radiator 32 so as to cover the LED substrate 34. At this time, the cover 35 pushes the locking claw portions 94 into the locking openings 78 by pushing the locking claw portions 94 to the radiator 32 side while aligning the locking claws 94 with the locking openings 78 of the heat radiator 32. Engage with each other. As a result, the cover portion 93 of the cover 35 covers the LEDs 86 of the LED substrate 34.

  The LED lamp 14 assembled in this way is attached to the instrument body 12 by turning each electrode pin 49 in the circumferential direction in a state where the electrode pin 49 is inserted into the enlarged diameter portion of the socket opening of the socket 13, and each electrode pin 49 However, it is electrically connected to an external power source (commercial power source) via the money receiver. Then, the lighting fixture 11 is completed by covering the LED lamp 14 and attaching the globe 16 to the fixture body 12.

  The electric power supplied from the external power source (commercial power source) to the lighting circuit 39 via the electrode pins 49 by the socket 13 is converted by the lighting circuit 39 and supplied to the LEDs 86, and the LEDs 86 are lit. Light emitted from each LED 86 is diffused by the cover portion 93 of the cover 35 and is also diffused and irradiated by the globe 16.

  Heat from the lighting circuit 39 is transmitted to the lid portion 57 of the radiator 32 that covers the lighting circuit 39. Further, the heat from the LED board 34 (LED 86) is transmitted from the board body 85 to the arrangement portion 58 of the heat radiating body 32 through the insulating sheet 33. Therefore, the heat generating area is separated by the lighting circuit 39 and the LED board 34 (LED 86), and local (partial) heat accumulation (accumulation) is suppressed to a minimum. Thus, a large surface area is secured, and heat from the LED board 34 (LED 86) is effectively released into the atmosphere.

  In particular, the radiator 32 generates thermal convection toward the inner peripheral side and the outer peripheral side of the arrangement portion 58 that has received heat from the LED substrate 34 (LED 86), and covers the lighting circuit 39 and the LED substrate 34. When the outside air passes through the opening 60 (the ventilation opening 46 of the housing portion 31) located between the disposing portion 58 where the air is disposed (arrows H1 and H2), heat is effectively radiated to the atmosphere.

  As described above, according to the first embodiment, the heat radiating body 32 includes the lid portion 57 that covers the housing portion 31 that houses the lighting circuit 39 therein, and the LED substrate 34 that is positioned around the lid portion 57. Are integrally provided with a placement portion 58 that is thermally connected to disperse heat from the lighting circuit 39 and the LED board 34 (LED 86) to the lid portion 57 and the placement portion 58 and The surface area can be increased, and heat can be effectively radiated with a simple configuration.

  Next, a second embodiment will be described with reference to FIGS. In addition, about the structure and effect | action similar to the said 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the LED lamp 14 of the second embodiment, the housing portion 31 includes a housing portion main body 37 and a separate synthetic resin lid body 96 that covers the housing portion main body 37, and the cover 35 includes the LED substrate 34. The lens portion 97 for diffusing the light emitted from each LED 86 and the pressing portion 98 for pressing the LED substrate 34 against the heat radiating body 32 are provided.

  In the accommodating portion 31, the screw receiving portion 50 of the accommodating portion main body 37 is disposed on each connecting arm portion 45. Further, the lid 96 is formed in a disc shape that covers and closes the lower side of the base portion 42 of the accommodating portion main body 37. Further, a boss-like electrode pin support portion 101 that supports each electrode pin 49 is provided on the upper portion of the lid 96. For this reason, the lid 96 is thermally connected to the housing main body 37 in a state where it is attached to the housing main body 37. Further, the lower surface of the lid 96 is in planar contact with the lid 57 of the heat radiating body 32 so that the entire surface is in close contact therewith.

  The cover 35 includes an annular lens portion 97 at a position facing the LED 86 of the LED substrate 34 of the cover portion 93, that is, a position corresponding to the virtual circle C. Further, the cover 35 is formed with an inner pressing portion 103 as a first pressing portion forming a part of the pressing portion 98 at a position on the inner peripheral edge side of the lens portion 97, and more than the inner pressing portion 103. A pressing rib 104 as a second pressing portion forming a part of the pressing portion 98 is formed at a position on the inner peripheral side. Further, on the outer peripheral side of the lens part 97 of the cover 35, that is, on the outer peripheral edge side of the cover 35, a flat planar part 105 that is in close contact with the arrangement surface part 71 of the arrangement part 58 of the heat radiating body 32 is continuous over the entire circumference. Is formed. On the inner peripheral edge of the cover 35, a plurality of, for example, three locking arm portions 106 serving as cover locking portions for locking the cover 35 to the heat radiating body 32 project radially toward the center portion. It is installed.

  The lens portion 97 protrudes downward in the thickness direction of the cover 35, and has a circular arc cross section. Further, the top part 97a of the lens part 97 is positioned directly below the LED 86, and inclined emission surfaces 97b and 97b are respectively formed on the inner peripheral side and the outer peripheral side of the cover 35 from the top part 97a. .

  Further, the holding portion 98 presses the substrate main body 85 of the LED substrate 34 against the arrangement portion 58 (arrangement surface portion 71) of the heat radiator 32 in a state where the heat radiator 32 is attached to the housing portion 31, thereby It is configured to transmit to the heat radiating body 32 (arrangement portion 58) more reliably.

  The inner pressing portion 103 is formed in an annular planar shape that is continuous with the emission surface 97 b on the inner peripheral side of the lens portion 97, that is, over the entire circumference of the inner peripheral edge of the lens portion 97.

  Further, the holding ribs 104 are radially formed on the upper surface, which is the back surface of the cover 35, and projecting radially along the radial direction, and are spaced apart from each other at substantially equal intervals.

  Further, the flat portion 105 is continuous and protrudes in a flange shape on the outer peripheral side of the lens portion 97.

  Further, each locking arm portion 106 protrudes at a position corresponding to each connecting portion 59 of the heat radiating body 32, and is formed so as to gradually become narrower from the proximal end side to the distal end side. . Further, a claw portion 106a protrudes toward the inner peripheral side at the upper portion on the distal end side of the locking arm portion 106. The claw portions 106a of these locking arm portions 106 are inserted and locked in square hole-shaped locking openings 108 provided in the vicinity of the outer peripheral edge of the lid portion 57 of each connecting portion 59 of the heat radiating body 32. ing. Further, in any one of the locking arm portions 106, an interference preventing portion 106b for avoiding interference with the connector receiving portion 89, each wiring 54, the connector 56, etc. mounted on the LED substrate 34 bulges downward. Is formed.

  Then, when the cover 35 is attached to the heat radiating body 32, the pressing portion 98, the flat surface portion 105, and the like are bonded to press the LED substrate 34 against the arrangement portion 58 of the heat radiating body 32, and to the LED substrate 34, On the other hand, the cover 35 is thermally connected. In this state, the lens portion 97 of the cover 35 faces the LED 86 (and the screw 75). That is, the screw 75 is located inside the lens portion 97 of the cover 35.

  Furthermore, since the linear light from the LED 86 can be diffused by the lens portion 97 that faces the LED 86 and protrudes in the thickness direction of the cover 35, a wide light distribution can be realized, and an existing light source can be used instead. Further, by pressing the LED board 34 against the heat radiating body 32 by the pressing portion 98, the LED board 34 can be more securely fixed to the heat radiating body 32, and the heat from the LED board 34 (LED 86) is transferred to the heat radiating body 32. The LED board 34 (LED86) and the cover 35 are directly and thermally connected to the cover 35 via the holding part 98, and the heat from the LED board 34 (LED86) is also radiated from the cover 35. Therefore, the temperature of the LED 86 can be further suppressed, and the efficiency of the LED lamp 14 can be increased.

  In the second embodiment, as in the third embodiment shown in FIG. 14, the cover portion 57 of the heat radiating body 32 is made thicker than the lens portion 97 (the top portion 97 a of the lens portion 97). The protrusion 110 may protrude downward in the direction. The projecting portion 110 has a lower end portion 110a, which is a mounting surface, formed in a flat shape so that the LED lamp 14 can be stably mounted on the plane P. As described above, when the LED lamp 14 is placed on the plane P by the lower end portion 110a of the projecting portion 110 with the accommodating portion 31 side as the upper side, the projecting portion 110 (the lid portion 57) is more than the lens portion 97. Since the lens portion 97 does not interfere with the plane P, the lens portion 97 can be prevented from being damaged or damaged.

  Further, in each of the above embodiments, as in the fourth embodiment shown in FIGS. 15 and 16, the inside of the housing portion 31 has a heat dissipation property and a heat conductivity property such as a high thermal conductivity silicone (heat dissipation silicone). The lighting circuit 39 (power supply board 40) and the lid portion 57 of the radiator 32 may be directly thermally connected by filling the resin R as a member. In this case, heat convection is generated in both directions of the inner peripheral side and the outer peripheral side of the arrangement portion 58 of the radiator 32 that has received heat from the LED board 34 (LED 86) (arrows H1, H2), and lighting Thermal convection is generated from the lid portion 57 of the heat radiating body 32 that directly receives the heat from the circuit 39 toward the outer peripheral side (arrow H3). That is, the heat generated from the LED board 34 (LED 86) and the lighting circuit 39 flows into the same opening 60 provided between the lid 57 and the arrangement part 58, respectively. As a result, due to the synergistic effect of the flow of both heats, stronger thermal convection is generated in the opening 60, and the heat generated from the LED board 34 (LED 86) can be more effectively released into the atmosphere.

  Next, a fifth embodiment will be described with reference to FIGS. In addition, about the structure and effect | action similar to said each embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  In the LED lamp 14 of the fifth embodiment, the accommodating portion 31 includes a support portion 113 between the connecting arm portions 45 and 45 of the accommodating portion main body 37, and a wiring insertion portion 55 is provided in the lid 96. The LED board 34 and the heat radiating body 32 are attached and fixed to the housing part 31 by screws 114 and 115 which are common fixing members.

  Each support portion 113 is formed to project radially outward from the peripheral portion 44 along the radial direction of the housing portion 31, and is located between the connecting arm portions 45 and 45. Therefore, the connecting arm portion 45 and the support portion 113 are separated from each other at substantially equal intervals. Each support portion 113 and each connecting arm portion 45 are provided with a screw receiving portion 117 to which a screw 114 is screwed at a position near the tip, and each connecting arm portion 45 has a protruding portion. A screw receiving portion 118 to which the screw 115 is screwed is protruded at a position on the base end side.

  In addition, the lid 96 has tongue-shaped projecting portions 121 that fit into any of the connecting arm portions 45 projecting radially along the radial direction, and the distal end side of the projecting portion 121 is the screw receiving portion 118. It extends to the vicinity. Further, a square tube-shaped wiring insertion portion 55 is integrally formed at the distal end side of the projecting portion 121. The wiring insertion portion 55 is inserted into an opening 73 provided at the position of any connecting portion 59 of the heat dissipating body 32, and the lower end of the front end side is closer to the cover 35 than the lower surface of the connecting portion 59 of the heat dissipating body 32. Protruding. Then, the wiring 54 from the lighting circuit 39 (power supply board 40) is inserted into the wiring insertion part 55 between the protruding part 121 and the connecting arm part 45 and led out to the LED board 34 side.

  Further, in addition to the screw hole 76 through which the screw 114 is inserted, the radiator 32 is provided with a screw hole (not shown) through which the screw 115 is inserted in each connecting portion 59.

  In addition, the insulating sheet 33 is provided with communication holes 82 through which the screws 114 are inserted, corresponding to the respective connecting arm portions 45 and the respective support portions 113 of the accommodating portion 31. Further, the insulating sheet 33 has sheet extending portions 124 extending at positions corresponding to the connecting arm portions 45 on the inner peripheral edge, and screws 115 are inserted through the sheet extending portions 124. Each communication hole (not shown) is provided.

  Further, the LED substrate 34 has extended portions 126 extending at positions corresponding to the connecting arm portions 45 on the inner peripheral edge of the substrate body 85. Further, the substrate body 85 is provided with through holes 90 through which the screws 114 are inserted, corresponding to the respective connecting arm portions 45 and the respective supporting portions 113 of the accommodating portion 31, and to the respective extending portions 126. A through hole 127 through which the screw 115 is inserted is provided.

  Further, the claw portion 106a of each locking arm portion 106 of the cover 35 protrudes outward of the cover 35, and is raised in the vicinity of the outer peripheral edge of the lid portion 57 of each connecting portion 59 of the radiator 32. It is configured to be locked to the loop-shaped locking protrusion 128.

  When assembling the LED lamp 14, first, the power supply board 40 (lighting circuit 39) is inserted and held in the housing part main body 37 of the housing part 31, and each electrode pin 49 and the power supply board 40 (lighting circuit 39) are held. Are electrically connected by each wiring 53.

  Next, the lid 96 is fitted and attached to the housing main body 37. At this time, each wiring 54 derived from the power supply substrate 40 (lighting circuit 39) is inserted into the wiring insertion portion 55 formed in the protruding portion 121 of the lid body 96 and led out to the outside (lower side) of the lid body 96. .

  Thereafter, the radiator 32, the insulating sheet 33, and the LED substrate 34 are attached to the housing portion 31. At this time, the screw holes 76 of the heat radiating body 32, the communication holes 82 of the insulating sheet 33, and the through holes 90 of the LED substrate 34 are aligned with the respective screw receiving portions 117, and screw holes (not shown) of the heat radiating body 32 are also illustrated. The communication hole (not shown) of the insulating sheet 33 and the through hole 127 of the LED substrate 34 are aligned with the respective screw receiving portions 118 and fixed integrally with the screws 114 and 115. In this state, each sheet extending portion 124 of the insulating sheet 33 and each extending portion 126 of the LED substrate 34 are overlaid on each connecting portion 59 of the radiator 32, and any one of the sheet extending portions 124 and The wiring insertion part 55 is inserted into the opening 73 at a position closer to the center than the extension part 126, and the wirings 54 and the connectors 56 are led out through the wiring insertion part 55. The lighting circuit 39 is electrically connected to each LED 86 by connecting the connector 56 to the connector receiving portion 89.

  Then, the cover 35 is attached to the radiator 32 so as to cover the LED substrate 34. At this time, the cover 35 aligns the respective locking claws 94 with the respective locking openings 78 of the heat radiating body 32, and the claw portions 106a of the respective locking arm portions 106 with the respective locking protrusions of the heat radiating body 32. By pushing while aligning with 128, each locking claw portion 94 and each claw portion 106a are locked to each locking opening 78 and each locking projection 128. As a result, the lens portion 97 of the cover portion 93 of the cover 35 faces the LEDs 86 of the LED board 34.

  The LED lamp 14 assembled in this way is attached to the socket 13 (apparatus body 12) via each electrode pin 49 and is electrically connected to an external power source (commercial power supply). By attaching the globe 16 to the main body 12, the lighting fixture 11 is completed.

  The electric power supplied from the external power source (commercial power source) to the lighting circuit 39 via the electrode pins 49 by the socket 13 is converted by the lighting circuit 39 and supplied to the LEDs 86, and the LEDs 86 are lit. Light emitted from each LED 86 is diffused by the lens portion 97 of the cover 35 and diffused by the globe 16 and is emitted as uniform light.

  Heat from the lighting circuit 39 is transmitted to the lid portion 57 of the radiator 32 that covers the lighting circuit 39, and heat from the LED board 34 (LED 86) is passed from the board body 85 through the insulating sheet 33 to the radiator 32. Is transmitted to the arrangement unit 58. Therefore, the heat generating area is separated by the lighting circuit 39 and the LED board 34 (LED 86), and local (partial) heat accumulation (accumulation) is suppressed to a minimum. Thus, a large surface area is secured, and heat from the LED board 34 (LED 86) is effectively released into the atmosphere.

  In this way, since the wiring insertion portion 55 is formed in the lid 96 that is a simple circular plate shape, the wiring insertion portion 55 can be easily formed, and the wiring insertion portion 55 of the accommodation portion 31 is inserted into the accommodation portion main body 37. Compared with the case where the portion is provided, the shape of the accommodating portion main body 37 can be simplified, and the accommodating portion main body 37 can be manufactured at low cost.

  In addition, since the radiator 32, the insulating sheet 33 and the LED substrate 34 are fixed to the housing portion 31 with the common screws 114 and 115, the assembly work of the LED lamp 14 is easy, and the number of parts can be suppressed. Light weight and low cost can be realized.

  Further, according to the second to fifth embodiments, the screw 75 or the screw is arranged at the position of the row of the LEDs 86 arranged in a predetermined row (imaginary circle C) on the substrate body 85 of the LED substrate 34. By fixing the LED substrate 34 to the heat radiating body 32 by 114, the screw 75 or the head of the screw 114 is located inside the lens portion 97 and faces the lens portion 97. Therefore, the screw 75 or screw It is not necessary to form the cover 35 to avoid the interference between the cover 114 and the cover 35, the structure of the cover 35 can be further simplified, the cost is reduced, and unevenness of the light distribution characteristics due to the cover 35 is less likely to occur. Since the LED board 34 is pressed against and fixed to the heat radiating body 32 at a position corresponding to the LED 86 that generates the largest amount of heat on the board 34, heat from the LED 86 can be transmitted to the heat radiating body 32 more effectively.

  Since the housing portion 31 includes a lid body 96 that covers the housing portion main body 37 in which the lighting circuit 39 (power supply board 40) is housed and is thermally connected to the housing portion main body 37, the lid body 96 is provided. By closely contacting the lid portion 57 of the heat radiating body 32, the heat from the lighting circuit 39 can be more reliably transferred to the lid portion 57 of the heat radiating body 32 through the lid body 96, and the heat dissipation can be further improved. .

  In each of the above embodiments, the globe 16 may be curved into a spherical shape as in the sixth embodiment shown in FIG.

  Further, the electronic component 52 of the power supply substrate 40 may be composed of, for example, only a lead mounting component or only a surface mounting component. When the electronic component 52 is composed of only lead mounting components, the power supply substrate 40 can be mounted in only one step of the flow process by mounting it on one side of the power supply substrate body 51. Further, when the electronic component 52 is composed of only surface mount (SMD) components, the power supply substrate 40 can be formed together with the LED substrate 34 in only one reflow process.

  Furthermore, as the light source, not only the LED 86 but also a solid light emitting element such as an organic EL element or a semiconductor laser, a flat fluorescent lamp, or the like may be used.

  Further, the substrate body 85 of the LED substrate 34 may be divided into a plurality.

  Further, the configuration for attaching the cover 35 to the heat radiating body 32 can be arbitrarily set. Further, the cover 35 is not necessarily fixed to the heat radiating body 32 but may be configured to be attached to the accommodating portion 31, for example.

  Then, according to at least one embodiment described above, the radiator 32 includes the lid portion 57 that covers the housing portion 31 that houses the lighting circuit 39 therein, and the LED substrate 34 that is positioned around the lid portion 57. By providing the arrangement portion 58 that is thermally connected and arranged integrally, the heat from the lighting circuit 39 and the LED board 34 (LED 86) is distributed to the lid portion 57 and the arrangement portion 58, and local heat is generated. Concentration can be prevented and the surface area of the radiator 32 can be increased, so that heat can be effectively radiated with a simple configuration. Therefore, it is possible to cope with an increase in the amount of heat generated as the efficiency of the LED lamp 14 increases, and the efficiency of the LED lamp 14 can be increased.

  In addition, since the arrangement portion 58 of the heat radiating body 32 that has received heat from the LED substrate 34 (LED 86) is formed in an annular shape, thermal convection occurs in both directions on the inner peripheral side and the outer peripheral side. For this reason, the heat-to-heat flow rate is greatly increased, and heat can be radiated more effectively. In addition, when air passes through the opening 60 that is opened between the lid 57 that covers the lighting circuit 39 of the heat radiating body 32 and the arrangement portion 58 where the LED substrate 34 is disposed, the heat radiating body 32 is radiated and circulated by air. The heat dissipation characteristics of the heat sink 32 can be improved, and the weight and cost of the heat radiator 32 can be reduced.

Further, a wiring insertion portion 55 that is inserted into an opening 73 provided in the metal heat radiating body 32 and protrudes from the opening 73 toward the cover 35 is formed in the housing portion 31 formed of resin, and this wiring insertion portion 55 By inserting each wiring 54 that electrically connects the lighting circuit 39 and the LED substrate 34 to each other, it is possible to insert the resin wiring that each wiring 54 interferes with the edge of the opening 73 of the metal radiator 32. This can be prevented by the part 55. For this reason, each wiring 54 can be protected from disconnection or the like without damaging each wiring 54 by rubbing against the edge of the opening 73, and reliability can be further improved.
Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are included in the invention described in the claims and the equivalents thereof.

11 Lighting equipment
12 Instrument body
13 socket
14 LED lamp
15 Lamp device
16 Globe
31 containment
32 Heat sink as a housing
34 LED substrate as light source substrate
35 Cover
39 Lighting circuit
42 Base section
49 Electrode pin
54 Wiring
55 Wiring insertion part
57 Lid
58 Placement section
59 Connection
73 opening
86 LED as light source
97 Lens section
106 Locking arm

Claims (4)

A lighting circuit;
A base portion that houses the lighting circuit and opens on the lower side; and a housing portion that is provided on the upper side of the base portion and includes a pair of electrode pins that are electrically connected to the lighting circuit;
A housing that integrally includes a lid portion that covers the lower side of the base portion of the housing portion, an annular arrangement portion that is disposed around the lid portion, and a plurality of connection portions that connect the lid portion and the arrangement portion. With the body;
A light source which emits light by supplying power from the lighting circuit, a light source substrate that is placed on the lower side of the placement portion of the radiator;
A cover having translucency and covering the light source substrate;
The lamp characterized by comprising. The housing includes an opening;
  The lighting circuit and the light source substrate are arranged from the upper side to the lower side of the casing through the opening.
Connected by the connected wiring,
  The lamp according to claim 1, wherein the cover has a locking arm portion protruding at a position corresponding to the connecting portion, and the wiring is covered with the locking arm portion. With sockets;
The lamp according to claim 1 or 2, wherein an electrode pin is connected to the socket;
A lamp device comprising: An instrument body;
The lamp device according to claim 3, wherein a socket is disposed on the instrument body;
A glove covering the lamp of this lamp device;
The lighting fixture characterized by comprising.

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